SQL Reference Guide > SQL Reference Guide > Understanding the Elements of SQL Statements > SQL Functions
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SQL Functions
Functions can be used in the following SQL statements:
• SELECT
• INSERT
• UPDATE
• DELETE
• WHILE
• IF
Scalar functions take single-valued expressions as their argument.
Aggregate functions take a set of values (for example, the contents of a column in a table) as their argument. Aggregate functions cannot be used in WHILE or IF statements.
Last modified date: 01/30/2023