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|
ij> --
-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements. See the NOTICE file distributed with
-- this work for additional information regarding copyright ownership.
-- The ASF licenses this file to You under the Apache License, Version 2.0
-- (the "License"); you may not use this file except in compliance with
-- the License. You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
--
-- Test the REFERENCING clause for a trigger
-- as well as a general test that using the
-- OLD and NEW transition variables work ok
--
drop table x;
ERROR 42Y55: 'DROP TABLE' cannot be performed on 'X' because it does not exist.
ij> create table x (x int, y int, z int);
0 rows inserted/updated/deleted
ij> --
-- negative tests
--
-- syntax
-- mismatch: insert->old, delete->new
create trigger t1 after insert on x referencing old as oldrow for each row values 1;
ERROR 42Y92: INSERT triggers may only reference new transition variables/tables.
ij> create trigger t1 after insert on x referencing old_table as oldtab for each statement values 1;
ERROR 42Y92: INSERT triggers may only reference new transition variables/tables.
ij> create trigger t1 after insert on x referencing old_table as oldtab for each statement values 1;
ERROR 42Y92: INSERT triggers may only reference new transition variables/tables.
ij> create trigger t1 after delete on x referencing new as newrow for each row values 1;
ERROR 42Y92: DELETE triggers may only reference old transition variables/tables.
ij> create trigger t1 after delete on x referencing new_table as newtab for each statement values 1;
ERROR 42Y92: DELETE triggers may only reference old transition variables/tables.
ij> create trigger t1 after delete on x referencing new_table as newtab for each statement values 1;
ERROR 42Y92: DELETE triggers may only reference old transition variables/tables.
ij> -- same as above, bug using old/new
create trigger t1 after insert on x referencing old as old for each row values old.x;
ERROR 42Y92: INSERT triggers may only reference new transition variables/tables.
ij> create trigger t1 after insert on x referencing old_table as old for each statement select * from old;
ERROR 42Y92: INSERT triggers may only reference new transition variables/tables.
ij> create trigger t1 after insert on x referencing old_table as old for each statement select * from old;
ERROR 42Y92: INSERT triggers may only reference new transition variables/tables.
ij> create trigger t1 after delete on x referencing new as new for each row values new.x;
ERROR 42Y92: DELETE triggers may only reference old transition variables/tables.
ij> create trigger t1 after delete on x referencing new_table as new for each statement select * from new;
ERROR 42Y92: DELETE triggers may only reference old transition variables/tables.
ij> create trigger t1 after delete on x referencing new_table as new for each statement select * from new;
ERROR 42Y92: DELETE triggers may only reference old transition variables/tables.
ij> -- cannot reference columns that don't exist, not bound as normal stmts
create trigger t1 after delete on x referencing old as old for each row values old.badcol;
ERROR 42X04: Column 'OLD.BADCOL' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE statement then 'OLD.BADCOL' is not a column in the target table.
ij> create trigger t1 after delete on x referencing old as old for each row values old;
ERROR 42X04: Column 'OLD' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE statement then 'OLD' is not a column in the target table.
ij> create trigger t1 after delete on x referencing old as oldrow for each row values oldrow.badcol;
ERROR 42X04: Column 'OLDROW.BADCOL' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE statement then 'OLDROW.BADCOL' is not a column in the target table.
ij> create trigger t1 after delete on x referencing old as oldrow for each row values oldrow;
ERROR 42X04: Column 'OLDROW' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE statement then 'OLDROW' is not a column in the target table.
ij> -- lets try some basics with old/new table
create table y (x int);
0 rows inserted/updated/deleted
ij> insert into y values 1, 2, 666, 2, 2, 1;
6 rows inserted/updated/deleted
ij> insert into x values (1, null, null), (2, null, null);
2 rows inserted/updated/deleted
ij> create trigger t1 after delete on x referencing old as old for each row delete from y where x = old.x;
0 rows inserted/updated/deleted
ij> autocommit off;
ij> delete from x;
2 rows inserted/updated/deleted
ij> select * from y;
X
-----------
666
ij> rollback;
ij> drop trigger t1;
0 rows inserted/updated/deleted
ij> commit;
ij> create trigger t1 after delete on x referencing old_table as old for each statement delete from y where x in (select x from old);
0 rows inserted/updated/deleted
ij> delete from x;
2 rows inserted/updated/deleted
ij> select * from y;
X
-----------
666
ij> drop trigger t1;
0 rows inserted/updated/deleted
ij> rollback;
ij> delete from x;
2 rows inserted/updated/deleted
ij> select * from y;
X
-----------
1
2
666
2
2
1
ij> rollback;
ij> delete from x;
2 rows inserted/updated/deleted
ij> delete from y;
6 rows inserted/updated/deleted
ij> -- test all types and row triggers since they do explicit type mapping
create table allTypes1 (i int, tn smallint, s smallint, l bigint,
c char(10), v varchar(50), lvc long varchar,
d double precision, r real, f float,
dt date, t time, ts timestamp,
b CHAR(2) FOR BIT DATA, bv VARCHAR(2) FOR BIT DATA, lbv LONG VARCHAR FOR BIT DATA,
dc decimal(5,2), n numeric(8,4));
0 rows inserted/updated/deleted
ij> create table allTypes2 (i int, tn smallint, s smallint, l bigint,
c char(10), v varchar(50), lvc long varchar,
d double precision, r real, f float,
dt date, t time, ts timestamp,
b CHAR(2) FOR BIT DATA, bv VARCHAR(2) FOR BIT DATA, lbv LONG VARCHAR FOR BIT DATA,
dc decimal(5,2), n numeric(8,4));
0 rows inserted/updated/deleted
ij> create trigger t1 after insert on allTypes1 referencing new as newrowtab for each row
insert into allTypes2
values (newrowtab.i, newrowtab.tn, newrowtab.s, newrowtab.l,
newrowtab.c, newrowtab.v, newrowtab.lvc,
newrowtab.d, newrowtab.r, newrowtab.f, newrowtab.dt,
newrowtab.t, newrowtab.ts, newrowtab.b, newrowtab.bv,
newrowtab.lbv, newrowtab.dc, newrowtab.n);
0 rows inserted/updated/deleted
ij> commit;
ij> insert into allTypes1 values (0, 10, 100, 1000000,
'duplicate', 'this is duplicated', 'also duplicated',
200.0e0, 200.0e0, 200.0e0,
date('1992-01-01'), time('12:30:30'), timestamp('xxxxxxFILTERED-TIMESTAMPxxxxx),
X'12af', X'0F0F', X'1234', 111.11, 222.2);
1 row inserted/updated/deleted
ij> select * from allTypes1;
I |TN |S |L |C |V |LVC |D |R |F |DT |T |TS |B |BV |LBV |DC |N
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
0 |10 |100 |1000000 |duplicate |this is duplicated |also duplicated |200.0 |200.0 |200.0 |1992-01-01|12:30:30|xxxxxxFILTERED-TIMESTAMPxxxxx|12af|0f0f|1234 |111.11 |222.2000
ij> select * from allTypes2;
I |TN |S |L |C |V |LVC |D |R |F |DT |T |TS |B |BV |LBV |DC |N
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
0 |10 |100 |1000000 |duplicate |this is duplicated |also duplicated |200.0 |200.0 |200.0 |1992-01-01|12:30:30|xxxxxxFILTERED-TIMESTAMPxxxxx|12af|0f0f|1234 |111.11 |222.2000
ij> commit;
ij> drop trigger t1;
0 rows inserted/updated/deleted
ij> insert into allTypes1 values (0, 10, 100, 1000000,
'duplicate', 'this is duplicated', 'also duplicated',
200.0e0, 200.0e0, 200.0e0,
date('1992-01-01'), time('12:30:30'), timestamp('xxxxxxFILTERED-TIMESTAMPxxxxx),
X'12af', X'0F0F', X'1234', 111.11, 222.2);
1 row inserted/updated/deleted
ij> delete from alltypes1;
2 rows inserted/updated/deleted
ij> drop trigger t1;
ERROR 42X94: TRIGGER 'T1' does not exist.
ij> insert into allTypes1 values (0, 10, 100, 1000000,
'duplicate', 'this is duplicated', 'also duplicated',
200.0e0, 200.0e0, 200.0e0,
date('1992-01-01'), time('12:30:30'), timestamp('xxxxxxFILTERED-TIMESTAMPxxxxx),
X'12af', X'0F0F', X'1234', 111.11, 222.2);
1 row inserted/updated/deleted
ij> drop table allTypes1;
0 rows inserted/updated/deleted
ij> drop table allTypes2;
0 rows inserted/updated/deleted
ij> -- do a join to find changed values just because i can
drop table x;
0 rows inserted/updated/deleted
ij> drop table y;
0 rows inserted/updated/deleted
ij> create table x (x int);
0 rows inserted/updated/deleted
ij> create table removed (x int);
0 rows inserted/updated/deleted
ij> -- create trigger t1 after update of x on x referencing old_table as old new_table as new
-- for each statement
-- insert into removed select * from old where x not in (select x from new where x < 10);
insert into x values 1,3,4,5,6,9,666,667,668;
9 rows inserted/updated/deleted
ij> update x set x = x+1;
9 rows inserted/updated/deleted
ij> select * from x;
X
-----------
2
4
5
6
7
10
667
668
669
ij> select * from removed;
X
-----------
ij> drop table x;
0 rows inserted/updated/deleted
ij> drop table removed;
0 rows inserted/updated/deleted
ij> commit;
ij> create table x (x int, y int);
0 rows inserted/updated/deleted
ij> create table y (x int, y int);
0 rows inserted/updated/deleted
ij> create trigger t1 after insert on x referencing new_table as newtab for each statement
insert into y select newtab.x, y+newtab.y from newtab;
0 rows inserted/updated/deleted
ij> insert into x values (1,1);
1 row inserted/updated/deleted
ij> select * from y;
X |Y
-----------------------
1 |2
ij> delete from y;
1 row inserted/updated/deleted
ij> drop trigger t1;
0 rows inserted/updated/deleted
ij> -- how about a correlation of a transition variable
create trigger t1 after insert on x referencing new_table as newtab for each statement
insert into y select newtab2.x, y+newtab2.y from newtab newtab2;
0 rows inserted/updated/deleted
ij> insert into x values (1,1);
1 row inserted/updated/deleted
ij> select * from y;
X |Y
-----------------------
1 |2
ij> -- lets prove that we are getting object types from row transition
-- variables. this is only an issue with row triggers because
-- they are doing some funky stuff under the covers to make
-- a column appear just like a normal table column
drop table x;
0 rows inserted/updated/deleted
ij> drop table y;
0 rows inserted/updated/deleted
ij> create table val (x int);
0 rows inserted/updated/deleted
ij> create table x (b char(5) FOR BIT DATA);
0 rows inserted/updated/deleted
ij> create table y (b char(5) FOR BIT DATA);
0 rows inserted/updated/deleted
ij> create trigger t1 after insert on x referencing new as new for each row insert into y values (new.b || X'80');
0 rows inserted/updated/deleted
ij> insert into x values (X'E0');
ERROR 22001: A truncation error was encountered trying to shrink CHAR () FOR BIT DATA 'e02020202080' to length 5.
ij> select * from y;
B
----------
ij> drop trigger t1;
0 rows inserted/updated/deleted
ij> create trigger t1 after insert on x referencing new as new for each row insert into y values new.b;
0 rows inserted/updated/deleted
ij> insert into x values null;
1 row inserted/updated/deleted
ij> select * from y;
B
----------
NULL
ij> drop trigger t1;
0 rows inserted/updated/deleted
ij> create trigger t1 after insert on x referencing new as new for each row insert into val values length(new.b);
0 rows inserted/updated/deleted
ij> insert into x values X'FFE0';
1 row inserted/updated/deleted
ij> select * from val;
X
-----------
5
ij> drop table x;
0 rows inserted/updated/deleted
ij> drop table y;
0 rows inserted/updated/deleted
ij> drop table val;
0 rows inserted/updated/deleted
ij> create table x (x dec(7,3));
0 rows inserted/updated/deleted
ij> create table y (x dec(8,4));
0 rows inserted/updated/deleted
ij> insert into x values 1234.1234, null, 1234.123;
3 rows inserted/updated/deleted
ij> select * from x;
X
---------
1234.123
NULL
1234.123
ij> select * from y;
X
----------
ij> create table t1 (col1 int not null primary key, col2 char(20));
0 rows inserted/updated/deleted
ij> create table s_t1(col1 int not null primary key, chgType char(20));
0 rows inserted/updated/deleted
ij> -- should work
create trigger trig_delete_2 after delete on t1 referencing OLD_TABLE as OLD for each statement
insert into s_t1 (select col1, 'D'
from OLD where OLD.col1 <> ALL
(select col1 from s_t1 where OLD.col1 = s_t1.col1));
0 rows inserted/updated/deleted
ij> drop trigger trig_delete_2;
0 rows inserted/updated/deleted
ij> -- should work
create trigger trig_delete_2 after delete on t1 referencing old_table as OLD for each statement
insert into s_t1 (select col1, 'D'
from OLD where OLD.col1 <> ALL
(select s_t1.col1 from s_t1, OLD where OLD.col1 = s_t1.col1));
0 rows inserted/updated/deleted
ij> insert into t1 values (5, 'first row'), (3, 'second row'), (9, 'third row'),
(4, 'forth row');
4 rows inserted/updated/deleted
ij> select * from s_t1;
COL1 |CHGTYPE
--------------------------------
ij> delete from t1 where col1 = 3 or col1 = 9;
2 rows inserted/updated/deleted
ij> select * from s_t1;
COL1 |CHGTYPE
--------------------------------
3 |D
9 |D
ij> insert into t1 values (9, 'third row'), (3, 'second row'), (7, 'fifth row');
3 rows inserted/updated/deleted
ij> delete from t1 where col1 = 3 or col1 = 7;
2 rows inserted/updated/deleted
ij> select * from s_t1;
COL1 |CHGTYPE
--------------------------------
3 |D
9 |D
7 |D
ij> delete from t1;
3 rows inserted/updated/deleted
ij> select * from s_t1;
COL1 |CHGTYPE
--------------------------------
3 |D
9 |D
7 |D
5 |D
4 |D
ij> rollback;
ij>
|
