Tutorial

Tutorial

SQL ALTER TABLE Add Column: A Complete Guide

Learn how to use SQL ALTER TABLE to add columns to existing tables. Follow examples for adding data types and default values.

Matthew Rathbone / August 25, 2025

Tutorial

Master JSONB Functions in PostgreSQL: A Practical Guide

Learn PostgreSQL JSONB functions with examples for effective JSON data management. Explore key operators, indexing, and more.

Matthew Rathbone / August 24, 2025

Tutorial

One-to-One Database Relationships: Complete Implementation Guide

Master one-to-one database relationships with detailed examples, SQL code, performance considerations, and common pitfalls. Learn when to use 1:1 relationships and implementation best practices.

Matthew Rathbone / July 24, 2025

Tutorial

One-to-Many Database Relationships: Complete Implementation Guide

Master one-to-many database relationships with real-world examples, advanced SQL patterns, performance optimization, and best practices. The most comprehensive guide to 1:many relationships.

Matthew Rathbone / July 24, 2025

Tutorial

MySQL COALESCE: Handling NULL Values Effectively

Learn how MySQL COALESCE handles NULLs by returning the first non-NULL value, ensuring meaningful query results.

Matthew Rathbone / July 24, 2025

Tutorial

Many-to-Many Database Relationships: Complete Implementation Guide

Master many-to-many database relationships with junction tables, advanced patterns, and real-world examples. Learn when to use M:N relationships and optimize performance with proper indexing strategies.

Matthew Rathbone / July 24, 2025

Tutorial

How to Count Distinct Values in SQL: Complete Guide with Examples

Learn how to count distinct values in SQL with COUNT DISTINCT function. Master SQL techniques for unique data analysis with multiple columns and aggregate functions.

Matthew Rathbone / July 21, 2025

Tutorial

Understanding Database Relationships: A Comprehensive Beginner's Guide

Master database relationships with visual diagrams, real examples, and SQL code. Learn one-to-one, one-to-many, and many-to-many relationships to build better databases and write more effective queries.

Matthew Rathbone / July 20, 2025

Tutorial

SQL Temp Table: How to Create a Temporary Table in SQL with Examples

Temp tables provide a practical solution for storing intermediate results, and they play a crucial role in optimizing query performance.

Matthew Rathbone / July 12, 2025

Tutorial

SQL JOIN for Beginners with Diagrams & Example Code

Easy to understand diagrams and code examples

Matthew Rathbone / July 2, 2025

Tutorial

How to Insert Date in SQL: Essential Tips for Database Management

Working with dates is a common requirement in database management, specifically when using SQL. One might often have to insert date values into their

Matthew Rathbone / July 2, 2025

Tutorial

Postgres Generate UUID: A Guide to Unique Identifiers

Learn how to generate UUIDs in PostgreSQL using uuid-ossp, ensuring unique IDs across systems with code examples and step-by-step guidance.

Matthew Rathbone / June 27, 2025

Tutorial

SQL Server Joins Guide: Inner, Left, Right & Full Joins

Master SQL Server joins with this comprehensive guide. Learn INNER, LEFT, RIGHT, and FULL OUTER joins with practical examples and clear explanations for combining table data effectively.

Matthew Rathbone / May 19, 2025

Tutorial

MySQL Joins Guide: Mastering Joins with Examples

Learn MySQL joins including INNER, LEFT, RIGHT, FULL, CROSS, and SELF JOINs with examples to enhance your database query skills.

Matthew Rathbone / May 13, 2025

Tutorial

Master PostgreSQL Cross Join: Examples & Use Cases

Learn how PostgreSQL CROSS JOIN works with examples and when to use it for generating combinations and data analysis.

Matthew Rathbone / May 7, 2025

Tutorial

Rails Execute SQL: Master Raw Queries for Optimized Performance

Learn how to execute raw SQL in Rails for complex queries, performance boosting, and database features while avoiding SQL injection.

Matthew Rathbone / April 25, 2025

Tutorial

Rails Generate Migration: Powerful Command Line Options

Explore the powerful command line options of 'rails generate migration' for efficient database management in Ruby on Rails applications.

Matthew Rathbone / April 22, 2025

Tutorial

PostgreSQL JSON Function Examples

A comprehensive guide to working with JSON data in PostgreSQL with practical examples of common JSON operations.

Matthew Rathbone / March 23, 2025

Tutorial

MySQL Select Top N Rows: Easy Methods with LIMIT

Learn how to select the top N rows in MySQL using the LIMIT clause with examples for efficient data sorting.

Matthew Rathbone / March 14, 2025

Tutorial

Data Querying Tools

Data querying is essential for managing and analyzing data stored in databases. In this guide, we will explore some of the most widely used data querying tools, highlighting their strengths, use cases, and practical examples.

Matthew Rathbone / October 21, 2024

Tutorial

How to Create a JDBC SQL Server Connection String

When connecting to a SQL Server database through a Java application, JDBC (Java Database Connectivity) is the bridge between your application and the database. A key component of this connection is the connection string. In this tutorial, we'll cover how to properly configure a JDBC connection string for SQL Server, what each part of the string means, and how to use it in your Java code.

Matthew Rathbone / September 23, 2024

Tutorial

How to use MariaDB with Docker

Using MariaDB with Docker and docker-compose can be a useful way to set up a development environment for your application. This guide will walk you through the process of setting up MariaDB with Docker, from installation to basic configuration.

Matthew Rathbone / September 21, 2024

Tutorial

Postgres in Docker - A Practical Guide

How to run Postgres using docker in development and in production - code examples included.

Matthew Rathbone / September 21, 2024

Tutorial

How to Query Active Record for Weekdays Only

When working with Rails applications, you might need to filter records based on weekdays only, excluding weekends. This requirement is common in scenarios like business hours reporting, scheduling, or other date-specific business logic. In this tutorial, we'll explore how to achieve this using 'Active Record' - Rails' built-in ORM (Object-Relational Mapping) tool.

Matthew Rathbone / September 12, 2024

Tutorial

How to Select Weekdays Only in Oracle SQL

In many business scenarios, you may need to perform operations or run queries that only consider weekdays. This can be especially important when dealing with working hours, schedules, or financial transactions, which typically exclude weekends. In this tutorial, we’ll walk through how to filter out weekends in Oracle SQL and work with weekdays only.

Matthew Rathbone / September 9, 2024

Tutorial

How to Show Grants in MySQL

Understanding and managing user permissions in MySQL is necessary for maintaining database security and proper access control. In this tutorial we will focus on displaying user privileges in MySQL using the `SHOW GRANTS` command.

Matthew Rathbone / September 8, 2024

Tutorial

How to Extract Total Days, Hours, or Minutes from an Interval in PostgreSQL

When working with date and time data in PostgreSQL, intervals are a common way to represent a span of time. Sometimes, you may need to extract specific components from an interval, such as total days, hours, or minutes. In this tutorial, we will cover how to extract these specific components from an interval.

Matthew Rathbone / August 28, 2024

Tutorial

How to Create a Table in Azure SQL Database

Creating tables is a fundamental task when working with databases, and Azure SQL Database is no exception. This tutorial will walk you through the steps to create a table in Azure SQL Database using SQL queries. We'll also cover some essential options and considerations to help you make the most out of your table creation.

Matthew Rathbone / August 26, 2024

Tutorial

How to Show Tables in PostgreSQL Using `psql`

When working with PostgreSQL, especially from the command line interface `psql`, one of the common tasks you'll perform is listing all tables in your current database. This guide will show you how to do that using various methods within psql.

Matthew Rathbone / August 25, 2024

Tutorial

How to Subtract in SQL

When working with databases, there are numerous scenarios where you might need to subtract values, whether it's to calculate differences between dates, subtract numeric values, or compare results across rows. This tutorial will guide you through the different ways to subtract in SQL, using practical examples that you can directly apply.

Matthew Rathbone / August 23, 2024

Tutorial

How to Rename a Table in PostgreSQL

Renaming a table in PostgreSQL is a straightforward task, but there are some important considerations to keep in mind. This tutorial will guide you through the process of renaming a table in PostgreSQL, explaining not only how to do it but also why it works the way it does.

Matthew Rathbone / August 19, 2024

Tutorial

How to Use SQL Query Templates

SQL query templates are a powerful tool to streamline your database operations and reduce repetitive coding. In this article, we'll walk through how to create and use SQL query templates, why they are beneficial, and provide code examples with expected outputs.

Matthew Rathbone / August 13, 2024

Tutorial

How to Rename a Column Using ALTER TABLE in SQL

Learn the different syntaxes for renaming columns using the ALTER TABLE command in SQL databases like MySQL, PostgreSQL, SQL Server, and SQLite.

Matthew Rathbone / August 8, 2024

Tutorial

How to Subtract in PostgreSQL

Learn how to perform subtraction ops in PostgreSQL, from basic numbers to dates and timestamps, with clear examples.

Matthew Rathbone / August 7, 2024

Tutorial

How to Create a Table in Oracle

Creating tables in Oracle is a fundamental task for managing your database schema. This guide will walk you through the essential steps and considerations when creating tables, including syntax, data types, and best practices.

Matthew Rathbone / July 29, 2024

Tutorial

How to Drop a Column in PostgreSQL

Dropping a column in PostgreSQL is a common operation when you need to clean up or optimize your database schema. This tutorial will walk you through the process of dropping a column, including why and how it works.

Matthew Rathbone / July 25, 2024

Tutorial

How to Rename a Column in PostgreSQL

Renaming a column in PostgreSQL is a common task when you need to make your database schema more intuitive and maintainable. This tutorial will guide you through the process, including potential pitfalls and considerations.

Matthew Rathbone / July 23, 2024

Tutorial

How to drop a table in MySQL

This tutorial will cover the syntax and practical use cases for dropping tables in MySQL, including safety precautions and potential pitfalls.

Matthew Rathbone / July 22, 2024

Tutorial

How to Kill a Session in PostgreSQL

Learn to kill sessions in PostgreSQL with our guide on using pg_terminate_backend and pg_cancel_backend functions effectively.

Matthew Rathbone / July 17, 2024

Tutorial

How to Kill Queries in Amazon Redshift

Learn how to identify, terminate, and automate problematic queries in Amazon Redshift to maintain optimal database performance.

Matthew Rathbone / July 15, 2024

Tutorial

How to Create Charts Using Ruby on Rails

Learn to create charts in Ruby on Rails using Chartkick. A simple tutorial for visualizing SQL data with charts.

Matthew Rathbone / July 10, 2024

Tutorial

How to Drop a Sequence in PostgreSQl

Learn how to drop a sequence in PostgreSQL efficiently using commands like DROP SEQUENCE, IF EXISTS, CASCADE, and RESTRICT.

Matthew Rathbone / July 6, 2024

Tutorial

How to Limit Rows in Teradata

Learn how to limit rows in Teradata using TOP, SAMPLE, and QUALIFY with practical examples to ennhance query performance and efficiency.

Matthew Rathbone / July 6, 2024

Tutorial

How to Drop Constraints in PostgreSQL

To drop a constraint in PostgreSQL, use the `ALTER TABLE` command followed by the `DROP CONSTRAINT` clause, specifying the name of the constraint to be dropped. Be careful, as this can potentially lead to data integrity issues.

Matthew Rathbone / July 6, 2024

Tutorial

Understanding and Resolving the "SQLite Database is Locked" Error

When working with SQLite databases, encountering a "database is locked" error can be a frustrating roadblock. This tutorial explains why this error occurs and provides practical solutions to resolve it, complete with code examples and their expected outputs.

Matthew Rathbone / June 25, 2024

Tutorial

PostgreSQL Stored Procedure Example Tutorial

Learn how to write and call PostgreSQL Stored Procedures with step-by-step examples

Matthew Rathbone / June 20, 2024

Tutorial

Storing Images in a Database: A How-To Guide

This tutorial will guide you through the process of storing images in SQL databases using BLOB (Binary Large Object) data types, providing practical examples and explanations.

Matthew Rathbone / June 18, 2024

Tutorial

How to Show Tables in SQLite

Learn how to show tables in SQLite using .tables & SELECT statements. Discover methods to see table schemas and utilize Beekeeper Studio for easy SQLite database management.

Matthew Rathbone / June 16, 2024

Tutorial

Creating a User in MariaDB: A Step-by-Step Guide

To create a new user in MariaDB, use the `CREATE USER` and `GRANT` statements to create the user and grant necessary privileges, then use `FLUSH PRIVILEGES` to make the changes take effect. Manage user accounts carefully for security and integrity.

Matthew Rathbone / June 10, 2024

Tutorial

How to Add a Column in Teradata: A Step-by-Step Guide

Learn how to add a column in Teradata using the ALTER TABLE command with practical examples.

Matthew Rathbone / June 4, 2024

Tutorial

MySQL Change Column Type Guide

Learn how to change column type in MySQL using the ALTER TABLE statement. Follow practical examples to modify column data types efficiently.

Matthew Rathbone / May 28, 2024

Tutorial

Cassandra Show Tables: How to List Tables Using CQL

Learn to show tables in Cassandra with simple CQL commands. Step-by-step guide for listing keyspaces and tables using cqlsh.

Matthew Rathbone / May 8, 2024

Tutorial

Deleting a Database in MySQL: A Step-by-Step Guide

To delete a database in MySQL, use the DROP DATABASE command, be careful, this action is permanent.

Matthew Rathbone / May 6, 2024

Tutorial

MySQL Subtraction Techniques

Learn how to perform subtractions in MySQL including numbers, columns, dates, aggregates, and handle NULL values effectively.

Matthew Rathbone / April 29, 2024

Tutorial

Adding a Primary Key to an Existing Table in PostgreSQL

Learn how to add a primary key to an existing table in PostgreSQL using the ALTER TABLE command

Matthew Rathbone / April 29, 2024

Tutorial

How to List Databases Using the psql command line tool

Use \l or \list to list databases. In this tutorial we'll also show you how to get more detailed information, such as the size, description, use roles & permissions, and tablespace data.

Matthew Rathbone / April 21, 2024

Tutorial

Understanding and Implementing 'SELECT TOP 1' in SQL

A guide to using 'SELECT TOP 1' for efficient data retrieval with equivalent methods for SQL Server, MySQL and PostgreSQL.

Matthew Rathbone / April 17, 2024

Tutorial

PostgreSQL Information_Schema Guide for Database Management

Learn how to use PostgreSQL information_schema to view tables, columns, constraints, and more for effective database management.

Matthew Rathbone / April 9, 2024

Tutorial

Understanding PostgreSQL Information_Schema Views

Explore the PostgreSQL information_schema views for insights on database structure, tables, columns, triggers, and constraints.

Matthew Rathbone / April 8, 2024

Tutorial

Configure GoDaddy MySQL Hostname - Step-by-Step Guide

Learn to find and set up your GoDaddy MySQL hostname for web apps. Essential guide for smooth database connections.

Matthew Rathbone / March 8, 2024

Tutorial

PostgreSQL How To Select Weekdays Only

Learn how to extract weekdays from dates in PostgreSQL. Code samples included

Matthew Rathbone / February 19, 2024

Tutorial

SQLite Subtract Operations: Learn How to Do It

Discover how to perform SQLite subtract operations with our guide, including date and time calculations. Code samples included.

Matthew Rathbone / February 14, 2024

Tutorial

SQL Server Subtraction Operations

Learn how to perform subtraction in SQL Server, handle NULL values, datetime calculations, and aggregate data sets with clear examples.

Matthew Rathbone / February 14, 2024

Tutorial

How to Rename a Column in SQL Server | Easy Step-by-Step Tutorial

Learn the stress-free way to rename a column in SQL Server using sp_rename and Beekeeper Studio. Our comprehensive guide covers everything from the basics to safeguarding against errors, ensuring a smooth SQL column renaming process.

Matthew Rathbone / January 18, 2024

Tutorial

Formatting Dates in Oracle Database - Quick Guide

Discover how TO_CHAR and TO_DATE functions can help you display and convert date values using various format codes. Perfect for developers aiming to refine their SQL skills.

Matthew Rathbone / January 13, 2024

Tutorial

Guide to Formatting Dates in PostgreSQL

Learn the ins and outs of formatting dates in PostgreSQL with our comprehensive guide. Dive into date types with examples and the TO_CHAR function to master PostgreSQL date formatting.

Matthew Rathbone / January 12, 2024

Tutorial

MySQL Create Index Tutorial: Optimizing MySQL Queries

How to create indexes in MySQL to enhance query performance. This guide with examples will introduce you to index creation for faster data retrieval and efficient querying.

Matthew Rathbone / January 6, 2024

Tutorial

MySQL Full Outer Join Explained With Code Examples

FULL OUTER JOIN is not supported by MySQL, in this guide we'll show you how to accomplish the same thing with a workaround

Matthew Rathbone / January 2, 2024

Tutorial

How to drop a foreign key constraint in PostgreSQL

Matthew Rathbone / May 24, 2023

Tutorial

How To Limit The Number Of Rows Returned In Oracle Database

Oracle doesn't have the LIMIT keywords, but fear not, we have other tools....but really hope you're using 12c+.

Matthew Rathbone / May 17, 2023

Tutorial

SQL Server Express Edition: Features and Limitations

Understand SQL Server Express limitations including 1 CPU, 1GB RAM, 4GB database size, network protocol restrictions, and missing enterprise features.

Beekeeper Studio Staff / May 9, 2023

Tutorial

SQL Server System Tables and Stored Procedures (SPs)

Comprehensive reference guide to SQL Server system tables and stored procedures found in master and user databases, essential for database administration.

Beekeeper Studio Staff / May 8, 2023

Tutorial

Essential SQL Server Performance Counters Guide

Learn how to monitor SQL Server performance using key counters: CPU utilization, memory usage, cache hit ratios, and disk I/O metrics with optimization strategies.

Beekeeper Studio Staff / May 7, 2023

Tutorial

The 4 Pillars of SQL Server Performance: CPU, Memory, Disk I/O, & Cache Hit Ratios

Master SQL Server performance optimization by understanding the four key metrics: CPU utilization, memory management, cache hit ratios, and disk I/O performance.

Beekeeper Studio Staff / May 6, 2023

Tutorial

SQL Server does not exist or access denied

Beekeeper Studio Staff / May 3, 2023

Tutorial

How To Limit The Number Of Rows Returned In Redshift

When you only want a subset of your results in Redshift, this is how you do it.

Matthew Rathbone / May 3, 2023

Tutorial

SQL Server Client Network Utility

Beekeeper Studio Staff / May 1, 2023

Tutorial

Difference and Limitations: MSDE vs. SQL Server

Beekeeper Studio Staff / April 26, 2023

Tutorial

How To Limit The Number Of Rows Returned In SQLite

If you don't want to pull back all records for a large SQLite dataset, or page through data, here's how

Matthew Rathbone / April 26, 2023

Tutorial

Convert Microsoft Access databases to SQL Server or MSDE

Beekeeper Studio Staff / April 25, 2023

Tutorial

System Tables and Stored Procedures - SQL Server

Beekeeper Studio Staff / April 23, 2023

Tutorial

Connecting to SQL Server 2005 and SQL Server Express

Beekeeper Studio Staff / April 21, 2023

Tutorial

SQL Server Administration

Beekeeper Studio Staff / April 20, 2023

Tutorial

SQL Server Development and T-SQL

Beekeeper Studio Staff / April 19, 2023

Tutorial

Understanding DDL triggers in SQL Server 2005

Beekeeper Studio Staff / April 19, 2023

Tutorial

How To Limit The Number Of Rows Returned In SQL Server

If you don't want to pull back all records for a large SQL Server dataset, or page through data, here's how

Matthew Rathbone / April 19, 2023

Tutorial

Migrating changes made to SQL Server databases to production

Beekeeper Studio Staff / April 15, 2023

Tutorial

Longhorn, Vista to drop SQL Server 2000 and MSDE support

Beekeeper Studio Staff / April 14, 2023

Tutorial

SQL Server Express and MSDE

Beekeeper Studio Staff / April 13, 2023

Tutorial

How To Limit The Number Of Rows Returned In BigQuery

Use the LIMIT clause to limit the number of rows returned. Combine with OFFSET to page through your data. But be careful - costs can mount quickly with BigQuery.

Matthew Rathbone / April 12, 2023

Tutorial

Filter stored procedure resultset with ISNULL

Beekeeper Studio Staff / April 11, 2023

Tutorial

How to Verify SQL Server and MSDE Installation

Learn how to check if SQL Server or MSDE is installed on your computer through Windows Services and how to identify default and named instances.

Beekeeper Studio Staff / April 10, 2023

Tutorial

Specified SQL Server not found

Beekeeper Studio Staff / April 8, 2023

Tutorial

SQL query analyzer tool

Beekeeper Studio Staff / April 7, 2023

Tutorial

Compare SQL Server 2005 Editions

Beekeeper Studio Staff / April 6, 2023

Tutorial

SQL Server Utility (SSEUtil) - Essential Features Guide

Learn about SQL Server Utility tool (SSEUtil) functions including database management, SQL execution, performance measurement, and server monitoring capabilities.

Beekeeper Studio Staff / April 5, 2023

Tutorial

How To Limit The Number Of Rows Returned In PostgreSQL

How to limit the number of rows returned for pagination, reporting, or debugging.

Matthew Rathbone / April 5, 2023

Tutorial

Microsoft SQL Server Cursors

Beekeeper Studio Staff / April 4, 2023

Tutorial

Client Network Utility: Configure MSDE protocols

Beekeeper Studio Staff / April 3, 2023

Tutorial

SQL Server Performance Optimization Guide

Learn essential SQL Server performance tuning techniques, including memory management, 64-bit advantages, reducing blocking, monitoring key performance counters, and index maintenance.

Beekeeper Studio Staff / April 2, 2023

Tutorial

OPENROWSET: Import data into SQL Server tables

Beekeeper Studio Staff / April 1, 2023

Tutorial

View SQL Server Agent job history

Beekeeper Studio Staff / March 30, 2023

Tutorial

Microsoft SQL Server Desktop Engine (MSDE) 2000 Guide

Learn about MSDE 2000 capabilities, limitations, and benefits. Understand database size limits, replication features, and when to use this SQL Server alternative.

Beekeeper Studio Staff / March 29, 2023

Tutorial

How To Limit The Number Of Rows Returned In MySQL

Use row limiting to paginate, debug, or perform reporting in your MySQL database.

Matthew Rathbone / March 29, 2023

Tutorial

MSDE vs. SQL Server

Beekeeper Studio Staff / March 28, 2023

Tutorial

Convert Microsoft Access databases to SQL Server or MSDE

Beekeeper Studio Staff / March 27, 2023

Tutorial

History and Benefits of Microsoft SQL Server Desktop Engine (MSDE)

Learn about Microsoft SQL Server Desktop Engine (MSDE) history, benefits, and how it compares to SQL Server and the Jet engine for desktop database applications.

Beekeeper Studio Staff / March 26, 2023

Tutorial

SQL Server 2005 Express: Express Manager, Management Studio, downloads, & limitations

Beekeeper Studio Staff / March 25, 2023

Tutorial

sp_helpdb: How big is your database log file?

Beekeeper Studio Staff / March 23, 2023

Tutorial

List available SQL Server instances on the network

Beekeeper Studio Staff / March 22, 2023

Tutorial

How to Rename a Column in Oracle Database

Sometimes you just need a column to have a different name, but don't worry, it's super easy to do in Oracle.

Matthew Rathbone / March 22, 2023

Tutorial

How many rows does your largest SQL Server table contain?

Beekeeper Studio Staff / March 21, 2023

Tutorial

Microsoft released SQL Server 2005 SP2 CTP

Beekeeper Studio Staff / March 20, 2023

Tutorial

Verify SQL Server and MSDE Installation

Beekeeper Studio Staff / March 18, 2023

Tutorial

SQL Server Performance Analysis: Key Monitoring Areas

Learn the four critical areas of SQL Server performance monitoring: System Utilization, Batches and Stored Procedures, Connectivity and Concurrency, and SQL Server Agent Jobs.

Beekeeper Studio Staff / March 18, 2023

SQL Reference

SOUNDEX() helps you find that last name

Beekeeper Studio Staff / March 18, 2023

Tutorial

Not associated with a trusted sql server connection

Beekeeper Studio Staff / March 18, 2023

SQL Reference

xp_fixeddrives: Monitor SQL Server Disk Space Usage

Beekeeper Studio Staff / March 17, 2023

Tutorial

SQL UPDATE Statement Syntax and Examples

Learn how to modify existing data in SQL tables using the UPDATE statement with comprehensive syntax explanations and practical examples.

Beekeeper Studio Staff / March 17, 2023

SQL Reference

GO (SQL Server TSQL)

Beekeeper Studio Staff / March 17, 2023

Tutorial

Tuning tempdb For Better SQL Server Performance

Beekeeper Studio Staff / March 17, 2023

Tutorial

SSAS Tutorial: Building SQL Server Analysis Services Cubes

Beekeeper Studio Staff / March 17, 2023

SQL Reference

SQL Server Data Manipulation Language (DML)

Beekeeper Studio Staff / March 17, 2023

Tutorial

SQL Server Data Types and Ranges

Beekeeper Studio Staff / March 17, 2023

Tutorial

Guide to SQL Server Backup Types and Recovery Options

Learn about SQL Server backup types including complete, differential, transaction log, and filegroup backups with syntax examples for backup and restore operations.

Beekeeper Studio Staff / March 17, 2023

Tutorial

Advantages of SQL Server 64-bit Architecture

Explore the benefits of 64-bit SQL Server including large memory addressing, enhanced parallelism, server consolidation, and improved performance over 32-bit systems.

Beekeeper Studio Staff / March 17, 2023

SQL Reference

sp_configure: Limit SQL Server memory usage

Beekeeper Studio Staff / March 17, 2023

Tutorial

SQL SELECT Statement Syntax and Examples

Learn SQL SELECT statement syntax including how to use DISTINCT, TOP, FROM, WHERE, GROUP BY, HAVING, and ORDER BY clauses with practical examples.

Beekeeper Studio Staff / March 17, 2023

Tutorial

SQL INSERT Statement Syntax and Examples

Learn how to add new data to SQL tables using INSERT statements with VALUES or SELECT. Includes syntax, examples, and permission requirements.

Beekeeper Studio Staff / March 17, 2023

Tutorial

Detect Duplicate Rows in a SQL Server Table

Beekeeper Studio Staff / March 17, 2023

SQL Reference

DBCC CLEANTABLE: Reclaim space for dropped columns

Beekeeper Studio Staff / March 17, 2023

SQL Reference

Comments (SQL Server)

Beekeeper Studio Staff / March 17, 2023

Tutorial

SQL Server Performance Optimization Tips

Improve SQL Server performance with practical tips on indexing, query optimization, database design, server configuration, and regular maintenance tasks.

Beekeeper Studio Staff / March 16, 2023

Tutorial

Understanding VARCHAR(MAX) in SQL Server 2005 & 2008

Beekeeper Studio Staff / March 15, 2023

Tutorial

Understanding SQL Server Memory Internals & Cache

Explore SQL Server memory architecture including buffer cache, procedure cache, log caches, and memory pool components critical for optimizing database performance.

Beekeeper Studio Staff / March 15, 2023

Tutorial

Understanding SQL Server Blocking and Deadlocks

Learn how SQL Server blocking occurs, how it can escalate to deadlocks, and how these concurrency issues affect database performance with visual examples.

Beekeeper Studio Staff / March 15, 2023

Tutorial

SQL DELETE Statement Syntax and Examples

Learn how to remove rows from SQL database tables using the DELETE statement with clear syntax explanations and practical examples.

Beekeeper Studio Staff / March 15, 2023

Tutorial

How to Import CSV Data into SQL Server Tables with BULK INSERT

Learn how to efficiently import CSV data into SQL Server tables using the BULK INSERT statement. Simple tutorial with code examples and field terminator configuration.

Beekeeper Studio Staff / March 15, 2023

Tutorial

How to Create a Custom Function in PostgreSQL

Custom functions are a great way to perform computations in Postgres, you won't believe how easy they are to create.

Matthew Rathbone / March 15, 2023

Tutorial

How (Any Why) To Add Source Control To SQL Server

The benefits of source control include improving troubleshooting, consistency, collaboration, and auditing. Discover a reliable and easy-to-use tool to source control your SQL Server database, and see how it can help you track and document changes while ensuring code consistency across your team.

Matthew Rathbone / March 8, 2023

Tutorial

How to Drop a Constraint in SQL Server

Constraints in SQL Server are super useful for data integrity, but sometimes you have to get rid of them. Here is how.

Matthew Rathbone / March 8, 2023

Tutorial

How to Drop a Constraint in Oracle Database

Constraints are great, but sometimes you have to remove them. Here is how

Matthew Rathbone / March 1, 2023

Tutorial

What Is Atomicity In Databases?

Atomicity is important if you need to run several SQL statements as a single batch. Read on to learn more.

Matthew Rathbone / February 26, 2023

Tutorial

What Is A Transactional Database?

Transactional databases are used to manage operational data for a range of industries. Read on to learn more.

Matthew Rathbone / February 24, 2023

Tutorial

SQLite in Python Tutorial

Starting to use SQLite in Python is pretty straightforward. Here's a quick 10 minute tutorial to get you started.

Matthew Rathbone / February 16, 2023

Tutorial

SQL Server How To Solve 'The transaction log for database x is full due to ACTIVE_TRANSACTION'

This is usually due to a long running transaction, or a low log file size.

Matthew Rathbone / February 14, 2023

Tutorial

PostgreSQL vs SQLite: Comparing Two Popular Databases

PostgreSQL and SQLite are both popular relational database management systems (RDBMS), but they are designed for different types of applications and have different strengths and weaknesses.

Matthew Rathbone / February 12, 2023

Tutorial

Comparing PostgreSQL and MariaDB: Origins, Features, and Performance

PostgreSQL and MariaDB are two popular open-source relational database management systems. Both have many similar features and capabilities, but there are also some key differences that may make one a better choice for certain use cases over the other.

Matthew Rathbone / February 10, 2023

Tutorial

PostgreSQL limitations

PostgreSQL is a popular open-source database system that is suitable for many projects, but it does have some limitations as you'll see below.

Matthew Rathbone / February 8, 2023

Tutorial

Using the ON DELETE CASCADE Behavior in Postgres to Maintain Database Integrity

In Postgres, the delete cascade behavior can be used to automatically delete child records when their parent is deleted, maintaining the integrity of the database.

Matthew Rathbone / February 4, 2023

Tutorial

Quick guide to using the python-oracledb library

How to connect to Oracle in Python. It's pretty simple, but the Oracle library has a few requirements that are unique compared to other databases.

Matthew Rathbone / January 31, 2023

Tutorial

How to use foreign keys in PostgreSQL

Use a foreign key to link one table to another, like linking orders to a customer. I'll walk through some real examples of foreign keys in action.

Matthew Rathbone / January 27, 2023

Tutorial

Storing and Querying JSON in SQLite: Examples and Best Practices

SQLite provides two ways to store and query JSON data: using the JSON1 extension and using the BLOB type. Both approaches have their own advantages and disadvantages. Examples and best practices are discussed.

Matthew Rathbone / January 25, 2023

Tutorial

How to store and query JSON in SQLite using a TEXT column with examples

The TEXT column is a great way to store JSON as it it still legible when editing the database, and a little searchable.

Matthew Rathbone / January 25, 2023

Tutorial

How To Store And Query JSON in SQLite Using A BLOB Column

BLOB columns are for binary data, but with a bit of work we can use them to store JSON data too. There are limitations to this approach however. Examples in Python

Matthew Rathbone / January 25, 2023

Tutorial

Solving Postgres "Peer Authentication Failed for User" Errors

Peer authentication failed for user errors in Postgres occur when the user is not authorized to access the database. This is commonly due to incorrect configuration in the pg_hba.conf file or a mismatch in the operating system and database user name

Matthew Rathbone / January 21, 2023

Tutorial

Solving MySQL 2003: can't connect to mysql server on localhost

If you're unable to connect to the MySQL server on localhost, there are a few potential causes and solutions to consider. This article provides a step-by-step guide to troubleshooting and resolving this issue

Matthew Rathbone / January 21, 2023

Tutorial

Creating Pivot Tables in Oracle Database Using PIVOT and UNPIVOT Operators

To create a pivot table in Oracle Database, you can use the PIVOT and UNPIVOT operators in combination with other SQL statements. This allows you to quickly and easily organize and summarize large sets of data, providing valuable insights into your data.

Matthew Rathbone / January 19, 2023

Tutorial

Creating Pivot Tables in PostgreSQL using the crosstab() function

To create a pivot table in PostgreSQL, you can use the crosstab() function from the tablefunc extension. This function allows you to pivot data from a source table to create a new table with the data organized in a more useful way. This can be a powerful tool for summarizing and analyzing large amounts of data.

Matthew Rathbone / January 17, 2023

Tutorial

Composite Primary Keys in SQL

A composite primary key is a type of database key that consists of two or more columns in a table. In this guide, we will provide examples of how to create, modify, and use composite primary keys in SQL

Matthew Rathbone / January 14, 2023

Tutorial

Ultimate Guide To Database Transactions

An outline of what a database transaction is, why they are important, code examples of how to use them, and a walkthrough of the different transaction states.

Lisandro Fernigrini / January 13, 2023

Tutorial

Creating Indexes in Postgresql: How to Use the CREATE INDEX Statement

To create an index in Postgresql, you can use the CREATE INDEX statement. This allows you to specify the index name, table and column, and index type. Indexes can improve query performance, but can also impact write performance, so use them wisely.

Matthew Rathbone / January 9, 2023

Tutorial

What Is A Deadlock In SQL

A deadlock in SQL occurs when two transactions are waiting for each other to release locks on database resources, causing a standstill in execution. To avoid deadlocks, keep reading.

Matthew Rathbone / January 7, 2023

Tutorial

Rails Migrations: Using bigint

Ints to small for you? Here's how to use bitint in rails migrations.

Matthew Rathbone / January 7, 2023

Tutorial

PostgreSQL ON CONFLICT Walkthrough

Learn how to use the ON CONFLICT clause in PostgreSQL to handle unique constraint violations and update existing records.

Matthew Rathbone / January 7, 2023

Tutorial

Rails Migration: Add Default Value to a Column

Learn how to set default values for columns in Rails using migrations. This post covers adding and changing default values with simple commands.

Matthew Rathbone / January 6, 2023

Tutorial

rails migration belongs_to

Matthew Rathbone / January 4, 2023

Tutorial

Rails Migrations: Basic data Types

what types does rails provide for migrations? Well all of them really, but it has helpers for the most common.

Matthew Rathbone / January 3, 2023

Tutorial

Rails Migration: Add Foreign Key

Foreign keys add relationships between tables in your database, here's how to add them using a Rails migration.

Matthew Rathbone / January 2, 2023

Tutorial

How to Use 'rails generate migration' to Create a Table in Rails

Learn how to efficiently use the Rails command line tool to generate migrations for table creation without writing custom code.

Matthew Rathbone / January 1, 2023

Tutorial

Creating Unique Constraints in PostgreSQL: A Guide

A unique constraint in PostgreSQL ensures that no two rows in a table have the same values in a specified column or set of columns. Here's how to create one

Matthew Rathbone / January 1, 2023

Tutorial

Comparing SQLite and MySQL

SQLite and MySQL are two popular databases that are often used in web applications. Although both are relational databases, they have some significant differences in terms of performance, features, and capabilities. In this article, we'll compare the two databases and discuss their key differences.

Matthew Rathbone / December 31, 2022

Tutorial

Rails Migration: add index syntax

Speed up your database queries with indexes. Here's how to create them in a rails migration.

Matthew Rathbone / December 31, 2022

Tutorial

PostgreSQL Comparing Two Values

How to compare two values in PostgreSQL

Matthew Rathbone / December 31, 2022

Tutorial

How long does it take to learn SQL?

It typically takes a few weeks to a couple of months to learn SQL, depending on the individual's prior experience and dedication to learning the language.

Matthew Rathbone / December 31, 2022

Tutorial

Rails Migration: Rename Column

Matthew Rathbone / December 30, 2022

Tutorial

Rails Migration: Remove Column

Oh man you left that column in by mistake? Here's how to remove it.

Matthew Rathbone / December 28, 2022

Tutorial

Boolean Columns in SQLite: A Beginner's Guide

Boolean columns in SQLite are useful for storing data with a binary nature, but in SQLite they're a little different...

Matthew Rathbone / December 28, 2022

Tutorial

Beginners Guide To Columnar Databases

A columnar database is a type of database management system (DBMS) that stores data in columns rather than rows.

Matthew Rathbone / December 28, 2022

Tutorial

How to Use "rails g migration add column" in Rails

Learn how to efficiently add a column to your database table using the Rails command line tool with the "rails g migration" command.

Matthew Rathbone / December 27, 2022

Tutorial

Top 5 Open Source Databases

If you need a database, you can't go wrong with one of these top-knotch open source databases used by millions of developers all over the world.

Matthew Rathbone / December 25, 2022

Tutorial

Rails Migrations - Drop Table

How to drop a table in a rails migration.

Matthew Rathbone / December 24, 2022

Tutorial

Listing Databases in PostgreSQL: The Equivalent of MySQL's SHOW DATABASES Command

To list all databases on a PostgreSQL server, use the commands shown below, they accomplish the same as the SHOW DATABASES command from MySQL

Matthew Rathbone / December 24, 2022

Tutorial

Rails How To Rollback A Migration

If something goes wrong, you'll want to roll back your migrations to a safe spot. Here's how.

Matthew Rathbone / December 23, 2022

Tutorial

How To Generate A Rails Migration

using the rails command line tools to generate a migration

Matthew Rathbone / December 22, 2022

Tutorial

Having vs Where in SQL

Both WHERE and HAVING are used to filter query results, but HAVING can only be used on aggregate function results.

Matthew Rathbone / December 21, 2022

Tutorial

Databricks Competitors

Databricks faces competition from other companies in the big data analytics and cloud computing space.

Matthew Rathbone / December 20, 2022

Tutorial

Understanding the Differences between Databases and Data Warehouses

While both databases and data warehouses are used to store data, there are key differences in the way they are designed and used. Databases are designed for transactional needs, while data warehouses are designed for analysis and reporting.

Matthew Rathbone / December 18, 2022

Tutorial

Comparing Amazon RDS and Redshift: Key Differences and Use Cases

Amazon RDS and Redshift are both cloud-based data storage services offered by AWS, but are intended for different use cases. RDS is a fully-managed relational database service, while Redshift is a partially-managed data warehousing service optimized for fast querying of large datasets. Key differences include pricing and management requirements.

Matthew Rathbone / December 18, 2022

Tutorial

Amazon Athena vs Redshift: Comparing Cloud-Based Data Storage and Analysis Services

Amazon Athena and Amazon Redshift are two cloud-based data storage and analysis services offered by AWS. While they share some similarities, they are designed for different use cases and have a number of key differences. Athena is a querying service for structured and unstructured data, while Redshift is a data warehousing service for large volumes of structured data.

Matthew Rathbone / December 16, 2022

Tutorial

PostgreSQL CREATE TABLE Walkthrough With Examples

How to create tables in Postgres taking into account schemas, permissions, primary keys, existing data, and more.

Shanika Wickramasinghe / December 14, 2022

Tutorial

10+ Best Oracle Database Tools

Level up your Oracle Database work with these amazing tools.

Lisandro Fernigrini / December 14, 2022

Tutorial

How to make a pivot table in SQL

A pivot table is a two dimensional table to summarize data, here's how to make a simple pivot table using only SQL.

Matthew Rathbone / December 12, 2022

Tutorial

MariaDB vs MySQL

MariaDB and MySQL are both excellent databases. Which one you use will depend on what you need most - new features or corporate support.

Matthew Rathbone / December 12, 2022

Tutorial

SQL JSON_EXTRACT Walkthrough With Examples

How to use JSON_EXTRACT to interact with json data stored as a string in a SQL Database

Matthew Rathbone / December 5, 2022

Tutorial

PostgreSQL How To Use Schemas

What are schemas in PostgreSQL and how to use them to make your life easier and organize your DB objects.

Matthew Rathbone / December 3, 2022

Tutorial

PostgreSQL CONSTRAINT Walkthrough

Learn what a constraint is and how to use it on your PostgreSQL tables.

Matthew Rathbone / December 3, 2022

Tutorial

Oracle CREATE USER Tutorial With Examples

How to use CREATE USER in Oracle to authenticate and permission a user. Syntax examples and advanced topics

Lisandro Fernigrini / November 4, 2022

Tutorial

How to Find Your Oracle Database Version Number

Need to know what version (or edition) of Oracle Database you are using? We'll walk through all the ways you can find it, even if your Oracle Database doesn't start.

Lisandro Fernigrini / October 30, 2022

Tutorial

7 Must-Have Tools For Developers That Use PostgreSQL

These tools will help you level up your PostgreSQL installation.

Etai Stein / September 26, 2022

Tutorial

Oracle Database Backups - A Beginners Guide

I'll discuss some backup strategies including offline backups, online backups, exports, and cloud specific options. I'll talk a lot about RMAN. Finally I'll weigh in on which backup strategy you should use.

Lisandro Fernigrini / September 26, 2022

Tutorial

Oracle CREATE DATABASE LINK Guide

In this tutorial I'll teach you how to connect your Oracle Database to another datastore and query them together like they're a single database.

Lisandro Fernigrini / September 2, 2022

Tutorial

How To List Oracle Tables

Sometimes you need to explore your Oracle database to find an existing table. In this guide we'll show you how to list and filter your Oracle tables.

Matthew Rathbone / August 19, 2022

Tutorial

PostgreSQL - Change The Type Of A Column, A Walkthrough With Examples

How to change a PostgreSQL column type without messing up your table, losing data, or taking down your database.

Matthew Rathbone / June 16, 2022

Tutorial

Guide to Distributing Electron Apps For Linux

There are half a dozen different packages you can build for Linux, but should you? By the end of this article you'll know what to do and why.

Matthew Rathbone / January 15, 2022