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v:4.8
master latest 4.8 4.7 3.3

Built-in functions and operatorsΒΆ

This chapter provides an overview of built-in functions and operators.

Table of contents

  • Scalar functions
    • String functions
    • Date and time functions
    • Geo functions
    • Mathematical functions
    • Regular expression functions
    • Array functions
    • Conditional functions and expressions
    • System information functions
    • Special functions
  • Aggregation
    • Aggregate expressions
    • Aggregate functions
    • Limitations
  • Arithmetic operators
  • Table functions
    • Scalar functions
    • empty_row( )
    • unnest( array [ array , ] )
    • pg_catalog.generate_series(start, stop, [step])
    • pg_catalog.generate_subscripts(array, dim, [reverse])
    • regexp_matches(source, pattern [, flags])
    • pg_catalog.pg_get_keywords()
    • information_schema._pg_expandarray(array)
  • Comparison operators
    • Basic operators
    • WHERE clause operators
  • Array comparisons
    • IN (value [, ...])
    • ANY/SOME (array expression)
    • ALL (array_expression)
  • Subquery expressions
    • IN (subquery)
    • ANY/SOME (subquery)
    • ALL (subquery)
  • Window functions
    • Window function call
    • Window definition
    • General-purpose window functions
    • Aggregate window functions

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