May 2002
Beginner to intermediate
560 pages
11h 36m
English
Content preview from Essential ADO.NET
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B.4. Wildcard Characters
Both the * and % can be used interchangeably for wildcards in a LIKE comparison. If the string in a LIKE clause contains a * or %, those characters should be escaped in brackets ([ ]). If a bracket is in the clause, the bracket characters should be escaped in brackets (e.g., [[ ] or [ ]]). A wildcard is allowed at the beginning and end of a pattern, or at the end of a pattern, or at the beginning of a pattern. For example:
"ItemName LIKE '*product*'" "ItemName LIKE '*product'" "ItemName LIKE 'product*'"
Wildcards are not allowed in the middle of a string. For example, 'te*xt' is not allowed.
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