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41
table_map used_tables_cache, not_null_tables_cache;
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enum Functype { UNKNOWN_FUNC,EQ_FUNC,EQUAL_FUNC,NE_FUNC,LT_FUNC,LE_FUNC,
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45
LIKE_FUNC,ISNULL_FUNC,ISNOTNULL_FUNC,
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COND_AND_FUNC, COND_OR_FUNC, COND_XOR_FUNC,
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47
BETWEEN, IN_FUNC, MULT_EQUAL_FUNC,