SUBSTRING

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The function SUBSTRING returns a part of a character / binary expression.

SQL Syntax:
 		    SUBSTRING ( expression, start, length )
Parameters:
 		   expression

Any data type of expressions. If it isn't a binary type then it will convert first to a string data type.

start

Is an integer that specifies where the substring begin. The first position is the 1.

length

Specified the count of characters or bytes that the function returns.

 
Escape Syntax:
 		   {fn SUBSTRING ( expression, start, length )  }
Return Type:
 		   A character string or binary data type depending the data type of the expression.

Examples:

  • SELECT SUBSTRING( 'Peter', 2, 1 )

see also:
SQL String Functions


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