LIKE predicate

The LIKE predicate searches a string value for a certain pattern.

The syntax for this predicate is:
string-expression   [NOT]  LIKE  pattern    [ ESCAPE escape-character ]

The pattern value is a string literal or parameter marker of type string in which the underscore ( _ ) stands for any single character and percent ( % ) stands for any sequence of characters ( including empty sequence ). Any other character stands for itself. The escape character can be used to search for character _ and %. The escape character can be specified as a string literal or an input parameter.

If the string-expression is null, then the result is unknown.

If both string-expression and pattern are empty, then the result is true.

Example: LIKE predicate




Related concepts
EJB query language
WHERE clause
Related tasks
Using EJB query
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Last updated: Oct 20, 2010 7:53:43 PM CDT
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