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622 lines
16 KiB
Text
622 lines
16 KiB
Text
--source include/have_sequence.inc
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#
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# Test of basic rownum() functionallity
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# Test are done with Aria to ensure that row order is stable
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#
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CREATE OR REPLACE TABLE t1(a int, b int) engine=aria;
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CREATE OR REPLACE TABLE t2(a int, b int) engine=aria;
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insert into t1 values (1,10),(2,20),(3,30);
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insert into t2 values (2,21),(3,31),(4,41);
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--echo #
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--echo # Simple selects
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--echo #
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select a,b,rownum() from t1;
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select a,b,rownum() from t1 where rownum() < 2;
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select a,b from t1 where rownum() <= 2;
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select a,b from t1 where rownum() > 2;
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--echo #
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--echo # Subqueries
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--echo #
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select t1.a,rownum(),t3.a,t3.t2_rownum from t1, (select t2.a,rownum() as t2_rownum from t2 where rownum() <=2) t3;
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select t1.a, (select t2.b from t2 where t1.a=t2.a and rownum() <= 1) 'b' from t1;
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select t1.a, t3.a from t1, (select * from t2 where rownum() <= 2) t3;
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select * from (select tt.*,rownum() as id from (select * from t1) tt) t3 where id>2;
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--echo #
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--echo # Joins
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--echo #
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select t1.a,t1.b,t2.a,t2.b,rownum() from t1,t2 where rownum() <= 4;
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select *,rownum() from t1,t2 where t1.a=t2.a and rownum()<=2;
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select * from t1 left join t2 on (t2.a=t1.a and rownum()=0);
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select * from t1 left join t2 on (t2.a=t1.a and rownum()>1);
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select * from t1 left join t2 on (t2.a=t1.a and rownum()<1);
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select * from t1 left join t2 on (t2.a=t1.a and rownum()=1);
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select * from t1 left join t2 on (t2.a=t1.a and rownum()>=1);
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--echo #
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--echo # Union
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--echo #
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select * from t1 where rownum() <=2 union select * from t2 where rownum()<= 1;
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--echo #
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--echo # Order by
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--echo #
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select * from t1 where rownum() <= 2 order by a desc;
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explain select * from t1 where rownum() <= 2 order by a desc;
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select t1.a,t1.b,rownum() from t1 where rownum() <= 2 order by a desc;
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explain select t1.a,t1.b,rownum() from t1 where rownum() <= 2 order by a desc;
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select *,rownum() from t1,t2;
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select *,rownum() from t1,t2 order by t2.a desc, t1.a desc;
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select * from (select * from t1 order by a desc) as t where rownum() <= 2;
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select * from t1,t2 where t1.a=t2.a and rownum()<=2 order by t1.a,t2.a;
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create view v1 as
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select * from (select * from t1 order by a desc) as t where rownum() <= 2;
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select * from v1;
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drop view v1;
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--echo #
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--echo # Having
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--echo #
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select t1.a, sum(t1.b), rownum() as 'r' from t1 group by t1.a having r <= 2;
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select * from t1 having rownum() <= 2;
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select t1.a, sum(t1.b), rownum() from t1 group by t1.a;
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select t1.a, sum(t1.b), rownum() as 'r' from t1 group by t1.a having r <= 2;
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select t1.a, sum(t1.b), rownum() as 'r' from t1 group by t1.a having rownum() <= 2;
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select t1.a, sum(t1.b), rownum() as 'r' from t1 group by t1.a having r <= 2 order by a desc;
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select t1.a, sum(t1.b), rownum() as 'r' from t1 group by t1.a having rownum() <= 2 order by a desc;
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--echo #
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--echo # Sum functions
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--echo #
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select max(rownum()),min(rownum()) from t1;
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select sum(rownum()),avg(rownum()) from t1;
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--echo #
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--echo # Group by
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--echo #
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select t1.a,sum(t1.b) from t1 where rownum() < 2 group by t1.a;
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select t1.a,sum(t2.b) from t1 JOIN t2 ON (t1.a=t2.a) where rownum() <= 2 group by t1.a;
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select * from (select t1.a,sum(t2.b) from t1 JOIN t2 ON (t1.a=t2.a) group by t1.a) as t where rownum() <= 1;
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select t1.a,sum(rownum()),count(*) from t1 where rownum() <= 2 group by t1.a;
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select * from (select t1.a,sum(t1.b) from t1 group by t1.a) as t3 where rownum() < 2;
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create table t3 (a int) engine=myisam;
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insert into t3 values (3),(5),(5),(3);
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select a, max(rownum()) from t3 group by a;
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drop table t3;
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CREATE TABLE t3 (
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a int(11) DEFAULT NULL,
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b varchar(1024) DEFAULT NULL
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);
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insert into t3 select mod(seq*3,20)+1, repeat(char(33+mod(seq,90)),mod(seq,10)*100) from seq_1_to_23;
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#chack after fix MDEV-28571
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--disable_view_protocol
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SELECT sq.a,length(sq.f) FROM (SELECT a, GROUP_CONCAT(b,b) AS f FROM t3 GROUP BY a ORDER BY a desc) as sq WHERE ROWNUM() <= 10;
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--enable_view_protocol
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drop table t3;
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--echo #
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--echo # Prepared statements
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--echo #
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PREPARE stmt1 from "select a,b,rownum() from t1 where rownum() <= 2";
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execute stmt1;
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execute stmt1;
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deallocate prepare stmt1;
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--echo #
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--echo # Views
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--echo #
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create view v1 as select t1.a,rownum() from t1;
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select * from v1;
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select t1.a,v1.* from t1,v1 where t1.a=v1.a;
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drop view v1;
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CREATE TABLE t3 (a INT);
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INSERT INTO t3 VALUES (1),(2),(3);
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CREATE VIEW v1 AS SELECT a FROM t3 WHERE ROWNUM() <= 2;
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SELECT * FROM v1;
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drop view v1;
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drop table t3;
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--echo #
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--echo # Reserved words
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--echo #
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create table t4 (a int, rownum int);
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insert into t4 (a,rownum) values (1,2);
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select t4.a,t4.rownum from t4;
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drop table t4;
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--echo #
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--echo # Test Oracle mode
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--echo #
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set SQL_MODE=ORACLE;
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select t1.a,rownum from t1 where rownum<=2;
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select t1.a,rownum() from t1 where rownum()<=2;
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--error ER_PARSE_ERROR
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create table t4 (a int, rownum int);
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DELIMITER |;
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DECLARE
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CURSOR c_cursor
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IS select a,b,rownum from t1 where rownum <= 2;
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v_a t1.a%TYPE;
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v_b t1.b%TYPE;
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v_rn t1.a%TYPE;
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BEGIN
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OPEN c_cursor;
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FETCH c_cursor INTO v_a, v_b, v_rn;
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WHILE c_cursor%FOUND LOOP
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SELECT concat(v_a,'--',v_b,'--',v_rn);
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FETCH c_cursor INTO v_a, v_b, v_rn;
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END LOOP;
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CLOSE c_cursor;
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END;|
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DELIMITER ;|
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select a, rownum from t1 group by a, rownum having rownum < 3;
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select a, rownum as r from t1 group by a, rownum having r < 3;
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select a, rownum from t1 group by a, rownum having "rownum" < 3;
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select a, rownum from t1 group by a, rownum having rownum < 3 order by a desc;
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select a, rownum as r from t1 group by a, rownum having r < 3 order by a desc;
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select a, rownum from t1 group by a, rownum having "rownum" < 3 order by a desc;
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set SQL_MODE=DEFAULT;
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--echo # Cleanup
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drop table t1,t2;
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--echo #
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--echo # INSERT
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--echo #
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create table t1 (a int not null primary key, b int);
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insert into t1 values (1,rownum()),(2,rownum()),(3,rownum());
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select * from t1;
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drop table t1;
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--echo #
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--echo # INSERT DELAYED
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--echo #
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create table t1 (a int not null primary key, b int);
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insert delayed into t1 values (1,rownum()),(2,rownum()),(3,rownum());
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let $wait_condition= SELECT COUNT(*)=3 FROM t1;
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source include/wait_condition.inc;
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select * from t1;
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drop table t1;
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--echo #
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--echo # INSERT IGNORED
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--echo #
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create table t1 (a int not null primary key, b int);
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# with VALUES
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insert ignore into t1 values (1,rownum()),(2,rownum()),(2,rownum()),(3,rownum());
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select * from t1;
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delete from t1;
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# with SELECT
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insert ignore into t1 select * from (values (1,rownum()),(2,rownum()),(2,rownum()),(3,rownum())) t;
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select * from t1;
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drop table t1;
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--echo #
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--echo # INSERT ... RETURNING
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--echo #
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create or replace table t1 (a int);
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insert into t1 values (1),(2) returning a, rownum();
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drop table t1;
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--echo #
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--echo # UPDATE
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--echo #
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create table t1 (a int not null primary key, b int);
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insert into t1 values (1,1),(2,2),(3,3);
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update t1 set b=0;
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update t1 set b=rownum()+1;
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select * from t1;
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update t1 set b=0;
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update t1 set b=rownum() where a < 10 and rownum() < 2;
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select * from t1;
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drop table t1;
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create table t1 (a int);
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insert into t1 values (10),(20),(30);
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update t1 set a = rownum();
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select * from t1;
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update t1 set a = rownum();
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select * from t1;
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drop table t1;
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--echo #
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--echo # DELETE
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--echo #
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create table t1 (a int not null primary key, b int);
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insert into t1 values (1,1),(2,0),(3,0);
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delete from t1 where a < 10 and rownum() < 2;
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select * from t1;
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drop table t1;
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--echo #
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--echo # MULTI-TABLE-DELETE
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--echo #
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create table t1 (a int not null primary key);
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insert into t1 values (1),(2),(3);
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create table t2 (a int not null primary key);
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insert into t2 values (1),(2),(3);
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delete t1,t2 from t1,t2 where t1.a=t2.a and rownum() <= 2;
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select * from t1;
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select * from t2;
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drop table t1,t2;
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--echo #
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--echo # MULTI-TABLE-UPDATE
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CREATE TABLE t1 (ID INT);
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CREATE TABLE t2 (ID INT,
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s1 TEXT, s2 TEXT, s3 VARCHAR(10), s4 TEXT, s5 VARCHAR(10));
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INSERT INTO t1 VALUES (1),(2);
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INSERT INTO t2 VALUES (1,'test', 'test', 'test', 'test', 'test'),
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(2,'test', 'test', 'test', 'test', 'test');
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SELECT * FROM t1 LEFT JOIN t2 USING(ID);
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UPDATE t1 LEFT JOIN t2 USING(ID) SET s1 = 'changed';
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select * from t2;
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update t2 set s1="";
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UPDATE t1 LEFT JOIN t2 USING(ID) SET s1 = 'changed' where rownum() <=1;
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select * from t2;
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drop table t1,t2;
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--echo #
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--echo # LOAD DATA
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--echo #
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create table t1 (a int, b int, c int);
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load data infile '../../std_data/loaddata7.dat' into table t1 fields terminated by ',' lines terminated by "\r\n" (a,b) set c=rownum();
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select * from t1;
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drop table t1;
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--echo #
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--echo # LIMIT OPTIMIZATION
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--echo #
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create table t1 (a int);
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insert into t1 select seq from seq_1_to_100;
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--disable_ps2_protocol
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flush status;
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select * from t1 where rownum() <= 3;
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() <= 4 and rownum() <= 3;
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() < 4 and a > 10;
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show status like "Rows_read";
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flush status;
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select * from t1 where 3 >= rownum();
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show status like "Rows_read";
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flush status;
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select * from t1 where 4 > rownum() and a > 20;
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() = 1 and a > 10;
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show status like "Rows_read";
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flush status;
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select * from t1 where a > 30 && 1 = rownum();
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show status like "Rows_read";
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flush status;
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--echo # No limit optimization
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select * from t1 where rownum() > 10;
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show status like "Rows_read";
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flush status;
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select * from t1 where 10 < rownum();
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() >= 10;
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show status like "Rows_read";
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flush status;
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select * from t1 where 10 < rownum();
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show status like "Rows_read";
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flush status;
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select * from t1 where 10 <= rownum();
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show status like "Rows_read";
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flush status;
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select * from t1 where 2 = rownum();
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() = 2;
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() <= 0;
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show status like "Rows_read";
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flush status;
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select *,rownum() from t1 where rownum() < 10 limit 4, 4;
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() < 10 order by a;
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show status like "Rows_read";
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flush status;
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--echo # rownum and limit
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select * from t1 where rownum() < 4 limit 10;
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show status like "Rows_read";
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flush status;
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select * from t1 where rownum() < 10 limit 4;
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show status like "Rows_read";
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--enable_ps2_protocol
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drop table t1;
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--echo #
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--echo # Rownum examples from Woqutech
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--echo #
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set SQL_MODE=ORACLE;
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create table t1 (c1 int ,c2 varchar(20)) engine=myisam;
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insert into t1 values (1, 'aaa'),(2, 'bbb'),(3, 'ccc'),(4, 'ddd'),(5, 'eee');
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update t1 set c2 = 'xxx' where rownum = 2;
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select * from t1 where c2='xxx';
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update t1 set c2 = 'xxx' where rownum < 3;
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select * from t1 where c2='xxx';
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delete from t1 where rownum = 2;
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select count(*) from t1;
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delete from t1 where rownum < 3;
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select count(*) from t1;
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delete from t1 where c1=rownum ;
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select count(*) from t1;
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delete from t1 where c1=rownum+2 ;
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select count(*) from t1;
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set SQL_MODE=DEFAULT;
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drop table t1;
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--echo #
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--echo # Rownum() used in not supported places (returns 0 or gives an error)
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--echo #
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set @a=rownum();
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select @a;
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--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
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create or replace table t (a int, b int as (rownum()) virtual);
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create table t1 (a int);
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insert into t1 values (3),(1),(5),(8),(4);
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handler t1 open;
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--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
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handler t1 read next where rownum() < 1;
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handler t1 close;
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drop table t1;
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# rownum() executed in a function will be run in the function context.
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create table t1 (a int not null primary key, b int);
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insert into t1 values (1,1),(2,2),(3,3);
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create function f() returns int return rownum();
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select a, rownum(), f() from t1;
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drop function f;
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drop table t1;
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# rownum() executed in a trigger will be run in the function context.
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create or replace table t1 (a int, r int);
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create trigger tr before update on t1 for each row set NEW.r = rownum();
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insert into t1 (a) values (1),(2);
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select * from t1;
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update t1 set a=a+10;
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select * from t1;
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drop trigger tr;
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drop table t1;
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--echo #
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--echo # LIMIT optimisation
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--echo #
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create table t1 (a int);
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insert into t1 values (1),(2),(3),(4),(5);
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--disable_view_protocol
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let $query=
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select * from (select a from t1 where a < 1000) as tt where rownum() <= 2;
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flush status;
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--disable_ps2_protocol
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eval $query;
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--enable_ps2_protocol
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show status like "Rows_read";
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eval explain extended $query;
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eval prepare stmt from "$query";
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flush status;
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execute stmt;
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show status like "Rows_read";
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flush status;
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execute stmt;
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show status like "Rows_read";
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deallocate prepare stmt;
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let $query=
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select * from (select a from t1 where a < 1000 group by a) as tt where rownum() <= 2;
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flush status;
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--disable_ps2_protocol
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eval $query;
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--enable_ps2_protocol
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show status like "Rows_read";
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eval explain extended $query;
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eval prepare stmt from "$query";
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execute stmt;
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execute stmt;
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deallocate prepare stmt;
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let $query=
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select * from (select a from t1 where a < 1000 group by a order by 1) as tt where rownum() <= 2;
|
|
flush status;
|
|
--disable_ps2_protocol
|
|
eval $query;
|
|
--enable_ps2_protocol
|
|
show status like "Rows_read";
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000 union select 10) as tt where rownum() <= 2;
|
|
flush status;
|
|
--disable_ps2_protocol
|
|
eval $query;
|
|
--enable_ps2_protocol
|
|
show status like "Rows_read";
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
--enable_view_protocol
|
|
|
|
--echo # Other limit
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000 group by a order by 1 limit 1) as tt where rownum() <= 2;
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
--echo # Other limit less
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000 group by a order by 1 limit 10) as tt where rownum() <= 2;
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000 union select 10 limit 1) as tt where rownum() <= 2;
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
--echo # < rownum
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000) as tt where rownum() < 2;
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
--echo # Simple expression
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000) as tt where rownum() <= 1+1;
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
--echo # Simple expression reversed
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000) as tt where 1+1 >= rownum();
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
--echo # expensive (no opt)
|
|
|
|
let $query=
|
|
select * from (select a from t1 where a < 1000) as tt where (select max(a) from t1) >= rownum();
|
|
eval $query;
|
|
eval explain extended $query;
|
|
eval prepare stmt from "$query";
|
|
execute stmt;
|
|
execute stmt;
|
|
deallocate prepare stmt;
|
|
|
|
drop table t1;
|
|
|
|
--echo #
|
|
--echo # Table value constructors
|
|
--echo #
|
|
values ("first row"),("next row is 3"),(rownum()),("next row is 5"),(rownum());
|
|
|
|
--echo #
|
|
--echo # MDEV-31073: Server crash, assertion `table != 0 &&
|
|
--echo # view->field_translation != 0' failure with ROWNUM and view
|
|
--echo #
|
|
|
|
CREATE TABLE t (f INT);
|
|
INSERT INTO t VALUES (1),(2);
|
|
CREATE VIEW v AS SELECT * FROM t;
|
|
UPDATE v SET f = 10 WHERE ROWNUM() > 42 LIMIT 1;
|
|
|
|
# Cleanup
|
|
DROP VIEW v;
|
|
DROP TABLE t;
|
|
|
|
CREATE TABLE t (f INT);
|
|
INSERT INTO t VALUES (1),(2);
|
|
CREATE VIEW v AS SELECT f, 3 as e FROM t;
|
|
UPDATE v SET f = 10 WHERE e > 42 LIMIT 1;
|
|
|
|
# Cleanup
|
|
DROP VIEW v;
|
|
DROP TABLE t;
|
|
|
|
CREATE TABLE t (f INT);
|
|
INSERT INTO t VALUES (1),(2);
|
|
CREATE VIEW v AS SELECT f, ROWNUM() as e FROM t;
|
|
--error ER_NON_UPDATABLE_TABLE
|
|
UPDATE v SET f = 10 WHERE e > 42 LIMIT 1;
|
|
|
|
# Cleanup
|
|
DROP VIEW v;
|
|
DROP TABLE t;
|
|
|
|
--echo #
|
|
--echo # End of 10.6 tests
|
|
--echo #
|