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COLLATE Clause in Various Parts of an SQL Query
With the COLLATE clause you can override whatever the default
collation is for a comparison. COLLATE may be used in
various parts of SQL queries. Here are some examples:
ORDER BY:
SELECT k FROM t1 ORDER BY k COLLATE latin1_german2_ci; |
AS:
SELECT k COLLATE latin1_german2_ci AS k1 FROM t1 ORDER BY k1; |
GROUP BY:
SELECT k FROM t1 GROUP BY k COLLATE latin1_german2_ci; |
SELECT MAX(k COLLATE latin1_german2_ci) FROM t1; |
DISTINCT:
SELECT DISTINCT k COLLATE latin1_german2_ci FROM t1; |
WHERE:
SELECT * FROM t1 WHERE _latin1 'M@"uller' COLLATE latin1_german2_ci = k; |
HAVING:
SELECT k FROM t1 GROUP BY k HAVING k = _latin1 'M@"uller' COLLATE latin1_german2_ci; |