SQL Predicates

Teradata Vantageā„¢ SQL Functions, Expressions, and Predicates

brand
Software
Teradata Vantage
prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1145-162K

SQL predicates, also referred to as logical predicates, are types of conditional expressions. They specify a condition of a row or group that has one of three possible states:

  • TRUE
  • FALSE
  • NULL (or unknown)

Predicates can appear in the following:

  • WHERE, ON, or HAVING clause to qualify or disqualify rows in a SELECT statement.
  • WHEN clause search condition of a searched CASE expression.
  • CASE_N function.
  • IF, WHILE, REPEAT, and CASE statements in stored procedures.