SQL Tutorial

How to search for a string in all tables of an SQL database

A guide on how to search for a specific string across all tables and columns in an SQL database using dynamic queries. This is useful for identifying the presence of a string anywhere in the database.

Select Data Only in Table1 That Is Not in Table2 in SQL

This article guides you on how to query data that exists only in `table1` and not in `table2` in SQL. We will explore different methods such as `LEFT JOIN`, `NOT EXISTS`, and `NOT IN`.

Listing Common Data of Two Tables Based on Join Key in SQL

A guide on how to use SQL statements to list common data between two tables based on join keys. This article helps you better understand how to use `INNER JOIN` to combine data from two tables.