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caching of queries with isammerge tables forbiden using general way
SQL_SELECT_LIMIT as default will be applied only for SELECT statement if there was not explicit LIMIT clause correct table list passed to class constructor of select_update
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@ -2612,16 +2612,15 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
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table_alias_charset used here because it depends of
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lower_case_table_names variable
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*/
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if (tables_used->table->db_type == DB_TYPE_MRG_ISAM ||
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tables_used->table->tmp_table != NO_TMP_TABLE ||
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if (tables_used->table->tmp_table != NO_TMP_TABLE ||
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(*tables_type & HA_CACHE_TBL_NOCACHE) ||
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(tables_used->db_length == 5 &&
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my_strnncoll(table_alias_charset, (uchar*)tables_used->db, 6,
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(uchar*)"mysql",6) == 0))
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{
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DBUG_PRINT("qcache",
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("select not cacheable: used MRG_ISAM, temporary, \
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system or other non-cacheable table(s)"));
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("select not cacheable: temporary, system or \
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other non-cacheable table(s)"));
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DBUG_RETURN(0);
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}
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if (tables_used->table->db_type == DB_TYPE_MRG_MYISAM)
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