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After merge fixes
Added THD to add_to_xxx_list() functions for faster parsing. heap/_check.c: After merge fix mysql-test/r/distinct.result: After merge fix mysql-test/r/multi_update.result: Make timestamp test portable mysql-test/t/multi_update.test: Make timestamp test portable sql/field.cc: After merge fix sql/item_sum.cc: After merge fix sql/log_event.cc: Remove compiler warning sql/mysql_priv.h: Added THD to add_to_list (Faster parsing) sql/sql_derived.cc: Fixed parameters to create_tmp_table() sql/sql_lex.cc: Added THD to add_to_list (Faster parsing) sql/sql_lex.h: Added THD to add_to_list (Faster parsing) sql/sql_parse.cc: Added THD to add_to_list (Faster parsing) sql/sql_select.cc: After merge fixes Fixed return values from JOIN::optimize() Replaced test_function_query with '!tables_list' Optimized arguments to create_tmp_table() sql/sql_select.h: Removed test_function_query variable Updated prototypes sql/sql_union.cc: Updated argument lists. sql/sql_update.cc: After merge fixes sql/sql_yacc.yy: Added THD to all add_xxx_to_list() functions sql/table.h: After merge fix
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@ -199,29 +199,29 @@ select distinct 1 from t1,t3 where t1.a=t3.a;
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1
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1
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explain SELECT distinct t1.a from t1;
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table type possible_keys key key_len ref rows Extra
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t1 index NULL PRIMARY 4 NULL 2 Using index
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
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explain SELECT distinct t1.a from t1 order by a desc;
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table type possible_keys key key_len ref rows Extra
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t1 index NULL PRIMARY 4 NULL 2 Using index
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
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explain SELECT t1.a from t1 group by a order by a desc;
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table type possible_keys key key_len ref rows Extra
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t1 index NULL PRIMARY 4 NULL 2 Using index
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
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explain SELECT distinct t1.a from t1 order by a desc limit 1;
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table type possible_keys key key_len ref rows Extra
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t1 index NULL PRIMARY 4 NULL 2 Using index
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
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explain SELECT distinct a from t3 order by a desc limit 2;
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table type possible_keys key key_len ref rows Extra
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t3 index NULL a 5 NULL 204 Using index
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 index NULL a 5 NULL 204 Using index
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explain SELECT distinct a,b from t3 order by a+1;
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table type possible_keys key key_len ref rows Extra
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t3 ALL NULL NULL NULL NULL 204 Using temporary; Using filesort
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 ALL NULL NULL NULL NULL 204 Using temporary; Using filesort
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explain SELECT distinct a,b from t3 order by a limit 10;
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table type possible_keys key key_len ref rows Extra
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t3 index NULL a 5 NULL 204 Using temporary
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 index NULL a 5 NULL 204 Using temporary
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explain SELECT a,b from t3 group by a,b order by a+1;
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table type possible_keys key key_len ref rows Extra
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t3 ALL NULL NULL NULL NULL 204 Using temporary; Using filesort
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 ALL NULL NULL NULL NULL 204 Using temporary; Using filesort
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drop table t1,t2,t3,t4;
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CREATE TABLE t1 (name varchar(255));
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INSERT INTO t1 VALUES ('aa'),('ab'),('ac'),('ad'),('ae');
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