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monty@mashka.mysql.fi authoredMIN(key_column) could in some cases return NULL on a column with NULL and other values. MIN(key_column) and MAX(key_column) could in some cases return wrong values when used in OUTER JOIN.
e3cd6352
MIN(key_column) could in some cases return NULL on a column with NULL and other values. MIN(key_column) and MAX(key_column) could in some cases return wrong values when used in OUTER JOIN.