66 lines
3.1 KiB
Plaintext
66 lines
3.1 KiB
Plaintext
drop table if exists test;
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create table test(a int,b int primary key);
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insert into test values(1,1);
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insert into test values(1,2);
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insert into test values(1,3);
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insert into test values(1,4);
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select * from test;
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a b
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1 1
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1 2
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1 3
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1 4
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explain select * from test;
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desc select * from test;
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describe select * from test;
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explain insert into test values(1,5);
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desc insert into test values(1,5);
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describe insert into test values(1,5);
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explain insert into test values(1,4);
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desc insert into test values(1,4);
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describe insert into test values(1,4);
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explain update test set a=2 where b=2;
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desc update test set a=2 where b=2;
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describe update test set a=2 where b=2;
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explain update test set b=2 where a=1;
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desc update test set b=2 where a=1;
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describe update test set b=2 where a=1;
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explain delete from test where b=5;
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desc delete from test where b=5;
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describe delete from test where b=5;
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explain create table test(a int,b int primary key);
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'create table test(a int,b int primary key)' at line 1
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desc create table test(a int,b int primary key);
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'create table test(a int,b int primary key)' at line 1
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describe create table test(a int,b int primary key);
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'create table test(a int,b int primary key)' at line 1
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explain drop table test;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'drop table test' at line 1
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desc drop table test;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'drop table test' at line 1
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describe drop table test;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'drop table test' at line 1
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drop table if exists sd;
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create table sd(a int);
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insert into sd values(5),(4),(4),(3),(2),(2),(2),(1);
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explain select @rownum := @rownum + 1 as row, @rank := IF(@prev_score!=a, @rownum, @rank) as rank, @prev_score := a as score from sd;
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explain outline select 1 < '2009-12-17 06:03:17';
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Query Plan
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==========================================
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|ID|OPERATOR |NAME|EST.ROWS|EST.TIME(us)|
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------------------------------------------
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|0 |EXPRESSION| |1 |1 |
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==========================================
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Outputs & filters:
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-------------------------------------
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0 - output([cast(1, DECIMAL(1, 0)) < cast('2009-12-17 06:03:17', DECIMAL(1, -1))]), filter(nil)
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values({cast(1, DECIMAL(1, 0)) < cast('2009-12-17 06:03:17', DECIMAL(1, -1))})
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Outline Data:
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-------------------------------------
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/*+
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BEGIN_OUTLINE_DATA
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OPTIMIZER_FEATURES_ENABLE('')
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END_OUTLINE_DATA
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*/
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drop table sd;
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