select
CHARINDEX(
'456'
,
'123456'
)
SQL statements CHARINDEX function, another method for testing string a string contains:
A, CHARINDEX function introduction
1, Function: function returns the starting position of a character string or another string.
2、语法：CHARINDEX ( expression1 , expression2 [ , start_location ] )
3, Parameter Description: expression1 to expression2 to find the characters, start_location CHARINDEX function is to start looking for expression1 in expression2 position.
4, the return value of the function: CHARINDEX function returns an integer, integer returned is looking at the position of the string in the string is looking. If no string CHARINDEX looking to find, then return 0
Second, for example: find the string 'abcdef' string 'cd', the result of operation 3, since C is the third character.
