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b0b315dce3
Don't create temporary objects with no table name myisam/mi_open.c: After merge fix mysql-test/r/analyse.result: After merge fix mysql-test/r/backup.result: After merge fix mysql-test/r/create.result: After merge fix mysql-test/r/delete.result: After merge fix mysql-test/r/func_like.result: After merge fix mysql-test/r/innodb.result: After merge fix mysql-test/r/rpl_loaddatalocal.result: After merge fix mysql-test/r/type_timestamp.result: After merge fix mysql-test/t/delete.test: Change to not use table 't' sql/sql_class.h: Remove usage of thd when creating 'Table_ident' Don't create temporary objects with no table name sql/sql_derived.cc: Indentation fix sql/sql_select.cc: After merge fix Fixed wrong return -> DBUG_RETURN() sql/sql_yacc.yy: Remove usage of thd when creating 'Table_ident'
33 lines
2.2 KiB
Text
33 lines
2.2 KiB
Text
drop table if exists t1,t2;
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create table t1 (i int, j int, empty_string char(10), bool char(1), d date);
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insert into t1 values (1,2,"","Y","2002-03-03"), (3,4,"","N","2002-03-04"), (5,6,"","Y","2002-03-04"), (7,8,"","N","2002-03-05");
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select count(*) from t1 procedure analyse();
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Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
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count(*) 4 4 1 1 0 0 4.0000 0.0000 ENUM('4') NOT NULL
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select * from t1 procedure analyse();
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Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
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t1.i 1 7 1 1 0 0 4.0000 2.2361 ENUM('1','3','5','7') NOT NULL
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t1.j 2 8 1 1 0 0 5.0000 2.2361 ENUM('2','4','6','8') NOT NULL
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t1.empty_string 0 0 4 0 0.0000 NULL CHAR(0) NOT NULL
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t1.bool N Y 1 1 0 0 1.0000 NULL ENUM('N','Y') NOT NULL
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t1.d 2002-03-03 2002-03-05 10 10 0 0 10.0000 NULL ENUM('2002-03-03','2002-03-04','2002-03-05') NOT NULL
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select * from t1 procedure analyse(2);
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Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
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t1.i 1 7 1 1 0 0 4.0000 2.2361 TINYINT(1) UNSIGNED NOT NULL
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t1.j 2 8 1 1 0 0 5.0000 2.2361 TINYINT(1) UNSIGNED NOT NULL
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t1.empty_string 0 0 4 0 0.0000 NULL CHAR(0) NOT NULL
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t1.bool N Y 1 1 0 0 1.0000 NULL ENUM('N','Y') NOT NULL
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t1.d 2002-03-03 2002-03-05 10 10 0 0 10.0000 NULL ENUM('2002-03-03','2002-03-04','2002-03-05') NOT NULL
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create table t2 select * from t1 procedure analyse();
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select * from t2;
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Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
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t1.i 1 7 1 1 0 0 4.0000 2.2361 ENUM('1','3','5','7') NOT NULL
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t1.j 2 8 1 1 0 0 5.0000 2.2361 ENUM('2','4','6','8') NOT NULL
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t1.empty_string 0 0 4 0 0.0000 NULL CHAR(0) NOT NULL
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t1.bool N Y 1 1 0 0 1.0000 NULL ENUM('N','Y') NOT NULL
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t1.d 2002-03-03 2002-03-05 10 10 0 0 10.0000 NULL ENUM('2002-03-03','2002-03-04','2002-03-05') NOT NULL
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drop table t1,t2;
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EXPLAIN SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE();
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> system NULL NULL NULL NULL 1
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
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