mirror of
https://github.com/MariaDB/server.git
synced 2025-09-03 20:43:11 +03:00
83 lines
2.3 KiB
Plaintext
83 lines
2.3 KiB
Plaintext
set sql_mode=ORACLE;
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:NEW.a := 1;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a := 1' at line 1
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:OLD.a := 1;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a := 1' at line 1
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:OLa.a := 1;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a := 1' at line 1
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SELECT :NEW.a;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a' at line 1
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SELECT :OLD.a;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a' at line 1
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SELECT :OLa.a;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a' at line 1
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CREATE TABLE t1 (a INT);
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CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW NEW.a:= 10;
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INSERT INTO t1 VALUES ();
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SELECT * FROM t1;
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a
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10
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DROP TRIGGER tr1;
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DROP TABLE t1;
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CREATE TABLE t1 (a INT);
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CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW :NEW.a:= 10;
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INSERT INTO t1 VALUES ();
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SELECT * FROM t1;
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a
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10
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DROP TRIGGER tr1;
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DROP TABLE t1;
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CREATE TABLE t1 (a INT);
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CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW
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BEGIN
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IF :NEW.a IS NULL
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THEN
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:NEW.a:= 10;
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END IF;
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END;
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/
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INSERT INTO t1 VALUES (NULL);
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SELECT * FROM t1;
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a
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10
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DROP TRIGGER tr1;
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DROP TABLE t1;
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CREATE TABLE t1 (a INT);
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CREATE TRIGGER tr1 BEFORE UPDATE ON t1 FOR EACH ROW
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BEGIN
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IF :OLD.a IS NULL
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THEN
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:NEW.a:= 10;
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END IF;
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END;
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/
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INSERT INTO t1 VALUES (NULL);
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UPDATE t1 SET a=NULL;
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SELECT * FROM t1;
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a
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10
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DROP TRIGGER tr1;
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DROP TABLE t1;
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CREATE TABLE t1 (a INT, b INT, c INT);
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CREATE TRIGGER tr1 BEFORE INSERT ON t1
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FOR EACH ROW
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DECLARE
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cnt INT := 0;
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BEGIN
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IF :NEW.a IS NULL THEN cnt:=cnt+1; END IF;
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IF :NEW.b IS NULL THEN cnt:=cnt+1; END IF;
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IF :NEW.c IS NULL THEN :NEW.c:=cnt; END IF;
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END;
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/
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INSERT INTO t1 VALUES ();
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INSERT INTO t1 VALUES (1, NULL, NULL);
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INSERT INTO t1 VALUES (NULL, 1, NULL);
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INSERT INTO t1 VALUES (1, 1, NULL);
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SELECT * FROM t1;
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a b c
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NULL NULL 2
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1 NULL 1
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NULL 1 1
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1 1 0
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DROP TABLE t1;
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