Learn how to add conditional logic and flexibility to your SQL queries with CASE and IF statements. Find out how to use them, combine them, and avoid common pitfalls.

Learn how to link tables based on a condition with inner join, left join, right join, and full join in SQL queries.

An IN condition tests if the column value that is returned by the sql-expression on the left is a member of the set (of constants or values returned by the query-expression) on the right. If so, it ...

This article discusses the “DROP IF EXISTS” statement available in SQL Server 2016 and later versions. “IF EXITS” is the latest optional clause added in the existing DROP statement in SQL Server 2016 ...

I’ve created a script that monitors a table in a SQL Server database. I’m only interested in one column in the table: TimeStamp. If the maximum (newest) value in TimeStamp is more than 30 ...

Which basically applies the condition test_field > 3 to the nested documents only (because of the must statement). This is a valid type of query as well, but in the SQL query above, the expect/correct ...

Conventions for Combining Search Conditions in the Criteria Pane (Visual Database Tools) [!INCLUDE SQL Server ] You can create queries that include any number of search conditions, linked with any ...

The result of a NOT EXISTS condition is true if the subquery evaluates to zero rows. For example, the following query subsets PROCLIB.PAYROLL (which is shown in Creating a Table from a Query's Result ...