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Access Previous Row Value and Next Row Value

Language: SQL, Level: Beginner: - Check out a quick way to access information from the previous row or next row from the current row.

Quick Tip for Removing Ambiguity in Database Queries

Language: SQL, Expertise: Intermediate - Learn why it's helpful to fully qualify database objects so that there is no place for ambiguity.

How to Check for a NULL Value and an Empty String

Language: SQL, Expertise: Beginner - This query checks for null values, as well as empty strings, then provides a suitable replacement on either occasion.

Finding the Difference Between 2 Dates in MySQL

Language: SQL, Expertise: Intermediate - See which MySQL function computes the difference between two dates and returns a positive result if the first date is greater than the second date.

Quickly Get a List of Database Tables in MySQL

Language: SQL, Expertise: Beginner - Execute this command in MySQL to get a list of all tables in the database.

Easily Get the Inserted Identity in SQL

Language: SQL, Expertise: Beginner - See how to easily get the inserted identity in SQL.

Statistics IO and Statistics Time

Language: SQL, Expertise: Intermediate - Easily figure out the amount of time spent on a query and the reads and writes of the query in question.

Connecting to a MySQL Database from the Command Prompt

Language: SQL, Expertise: Intermediate - Learn an easy way to connect to a MySQL database from the command prompt.

Print All Table Column Definitions in an Entire Database

Language: SQL, Expertise: Intermediate - Learn how to print all column definitions for all the tables in your database.

Create a Table from an Existing Table in MySQL

Language: SQL, Expertise: Intermediate - Learn how to easily create a new table that includes the indexes of the source table.

Finding All Currently Blocked Requests in SQL

Language: SQL, Expertise: Intermediate - Check out this quick way to find all currently blocked requests in SQL.

Understanding UNION in MySQL

Language: SQL, Expertise: Intermediate - Learn how to identify unique records in MySQL.

Using dm_exec_function_stats in SQL Server 2016

Language: SQL, Expertise: Intermediate - Check the execution details of a function in SQL.

Suppress Errors When Duplicate Data Is Inserted in MySQL

Language: SQL, Expertise: Intermediate - See how to use INSERT IGNORE in MySQL for cases in which ignoring duplicates might be useful.

A Handy Delete Stored Procedure

Language: SQL, Expertise: Intermediate - Ensure that your data is safe when you make use of Transactions to do any data manipulation with this sample stored procedure.

Using IFNULL in MySQL

Language: Java, Level: Intermediate: - Check out this MySQL command to handle null effectively in your code.

Allow SQL Server to Silently Truncate Data

Language: SQL, Expertise: Beginner - See two ways to prevent SQL from throwing this error.

Identifying all the Index(s) Available on a Table in MySQL

Language: SQL, Expertise: Intermediate - Learn a way to increase performance in MySQL.

Transpose Columns into Rows in SQL

Language: SQL, Expertise: Intermediate - Learn a different, albeit complicated, way to transpose columns into rows.

Quickest Way to Copy the Structure of a Table

Language: SQL, Level: Intermediate: - This quick tip demonstrates how to copy a table's data, as well as only the structure of a table.

Secure Your Data in SQL 2016 with Row Level Security (RLS)

Language: SQL, Expertise: Advanced - Learn to implement restrictions on data row access in SQL 2016.

Create a Snapshot of Your Database

Language: SQL, Level: Intermediate: - Use this code to create a snapshot of your current database.

Identify Tables Without an Identity Column

Language: SQL, Level: Beginner: - This query will enable you to list all the tables in your database that don't have an IDENTITY column.

Get the Total Number of Rows for Each Table in Your Database

Language: SQL, Level: Beginner: - Use the following query to get the total number of rows for each table in your database

Knowing the Version and Supported Engines in MySQL

Language: SQL, Level: Intermediate: - These commands are handy to find out the current version and supported engines in the MySQL.

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