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SUBSTRING

Categories: String

SUBSTRING

Returns the portion of the string from the specified base expression starting at the specified characters.

Syntax​

SUBSTRING(string_expression varchar, offset int64) → varchar​

  • string_expression: Base expression to extract substring from.
  • offset: The offset from which the substring starts.

Examples

SUBSTRING example
SELECT SUBSTRING('dremio user 1 2 3', 12)
-- 1 2 3

SUBSTRING(string_expression varchar, offset int64 [, length int64]) → varchar​

  • string_expression: Base expression to extract substring from.
  • offset: The offset from which the substring starts.
  • length (optional): The length limit of the substring.

Examples

SUBSTRING example
SELECT SUBSTRING('base expression', 6, 4)
-- expr

SUBSTRING(string_expression varchar, pattern varchar) → varchar​

  • string_expression: Base expression to extract substring from.
  • pattern: The offset from which the substring starts.

Examples

SUBSTRING example
SELECT SUBSTRING('dremio user 123', '[0-9]+')
-- 123