66 lines
3.1 KiB
Plaintext
66 lines
3.1 KiB
Plaintext
drop table if exists test;
|
|
create table test(a int,b int primary key);
|
|
insert into test values(1,1);
|
|
insert into test values(1,2);
|
|
insert into test values(1,3);
|
|
insert into test values(1,4);
|
|
select * from test;
|
|
a b
|
|
1 1
|
|
1 2
|
|
1 3
|
|
1 4
|
|
explain select * from test;
|
|
desc select * from test;
|
|
describe select * from test;
|
|
explain insert into test values(1,5);
|
|
desc insert into test values(1,5);
|
|
describe insert into test values(1,5);
|
|
explain insert into test values(1,4);
|
|
desc insert into test values(1,4);
|
|
describe insert into test values(1,4);
|
|
explain update test set a=2 where b=2;
|
|
desc update test set a=2 where b=2;
|
|
describe update test set a=2 where b=2;
|
|
explain update test set b=2 where a=1;
|
|
desc update test set b=2 where a=1;
|
|
describe update test set b=2 where a=1;
|
|
explain delete from test where b=5;
|
|
desc delete from test where b=5;
|
|
describe delete from test where b=5;
|
|
explain create table test(a int,b int primary key);
|
|
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
|
|
desc create table test(a int,b int primary key);
|
|
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
|
|
describe create table test(a int,b int primary key);
|
|
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
|
|
explain drop table test;
|
|
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
|
|
desc drop table test;
|
|
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
|
|
describe drop table test;
|
|
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
|
|
drop table if exists sd;
|
|
create table sd(a int);
|
|
insert into sd values(5),(4),(4),(3),(2),(2),(2),(1);
|
|
explain select @rownum := @rownum + 1 as row, @rank := IF(@prev_score!=a, @rownum, @rank) as rank, @prev_score := a as score from sd;
|
|
explain outline select 1 < '2009-12-17 06:03:17';
|
|
Query Plan
|
|
==========================================
|
|
|ID|OPERATOR |NAME|EST.ROWS|EST.TIME(us)|
|
|
------------------------------------------
|
|
|0 |EXPRESSION| |1 |1 |
|
|
==========================================
|
|
Outputs & filters:
|
|
-------------------------------------
|
|
0 - output([cast(1, DECIMAL(1, 0)) < cast('2009-12-17 06:03:17', DECIMAL(1, -1))]), filter(nil)
|
|
values({cast(1, DECIMAL(1, 0)) < cast('2009-12-17 06:03:17', DECIMAL(1, -1))})
|
|
Outline Data:
|
|
-------------------------------------
|
|
/*+
|
|
BEGIN_OUTLINE_DATA
|
|
OPTIMIZER_FEATURES_ENABLE('4.0.0.0')
|
|
END_OUTLINE_DATA
|
|
*/
|
|
drop table sd;
|