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0040b0f380
Part 13: RETURN vs RETURNS in function definition: CREATE FUNCTION f1(a INT) RETURN INT ... Part 12: No parentheses if no arguments: CREATE FUNCTION f1 RETURN INT ...
447 lines
10 KiB
Plaintext
447 lines
10 KiB
Plaintext
SET sql_mode=ORACLE;
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# Testing routines with no parameters
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CREATE FUNCTION f1 RETURN INT
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AS
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BEGIN
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RETURN 10;
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END;
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/
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SHOW CREATE FUNCTION f1;
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Function f1
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sql_mode PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ORACLE,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER
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Create Function CREATE DEFINER="root"@"localhost" FUNCTION "f1"() RETURN int(11)
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AS
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BEGIN
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RETURN 10;
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END
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character_set_client latin1
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collation_connection latin1_swedish_ci
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Database Collation latin1_swedish_ci
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SELECT f1();
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f1()
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10
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DROP FUNCTION f1;
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CREATE PROCEDURE p1
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AS
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BEGIN
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SET @a=10;
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END;
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/
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SHOW CREATE PROCEDURE p1;
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Procedure p1
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sql_mode PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ORACLE,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER
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Create Procedure CREATE DEFINER="root"@"localhost" PROCEDURE "p1"()
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AS
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BEGIN
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SET @a=10;
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END
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character_set_client latin1
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collation_connection latin1_swedish_ci
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Database Collation latin1_swedish_ci
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SET @a=0;
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CALL p1();
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SELECT @a;
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@a
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10
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DROP PROCEDURE p1;
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# Testing ":=" to set the default value of a variable
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CREATE FUNCTION f1 () RETURN NUMBER(10) AS
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a NUMBER(10) := 10;
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BEGIN
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DECLARE
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b NUMBER(10) DEFAULT 3;
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BEGIN
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RETURN a+b;
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END;
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END;
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/
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SELECT f1();
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f1()
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13
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DROP FUNCTION f1;
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# Testing labels
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CREATE FUNCTION f1 (a INT) RETURN CLOB AS
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BEGIN
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<<label1>>
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BEGIN
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IF a = 1 THEN
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LEAVE label1;
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END IF;
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RETURN 'IS NOT 1';
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END label1;
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RETURN 'IS 1';
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END;
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/
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SELECT f1(1);
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f1(1)
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IS 1
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SELECT f1(2);
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f1(2)
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IS NOT 1
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DROP FUNCTION f1;
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CREATE FUNCTION f1 (a INT) RETURN INT IS
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BEGIN
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<<label1>>
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LOOP
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IF a = 2 THEN
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LEAVE label1;
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END IF;
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SET a= a-1;
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END LOOP;
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RETURN a;
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END;
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/
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SELECT f1(4);
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f1(4)
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2
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DROP FUNCTION f1;
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CREATE FUNCTION f1 (a INT) RETURN INT AS
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BEGIN
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<<label1>>
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WHILE a>0 DO
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IF a = 2 THEN
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LEAVE label1;
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END IF;
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SET a= a-1;
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END WHILE label1;
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RETURN a;
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END;
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/
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SELECT f1(4);
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f1(4)
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2
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DROP FUNCTION f1;
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CREATE FUNCTION f1 (a INT) RETURN INT AS
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BEGIN
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<<label1>>
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REPEAT
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IF a = 2 THEN
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LEAVE label1;
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END IF;
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SET a= a-1;
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UNTIL a=0 END REPEAT;
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RETURN a;
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END;
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/
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SELECT f1(4);
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f1(4)
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2
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DROP FUNCTION f1;
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# Testing IN/OUT/INOUT
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CREATE PROCEDURE p1 (p1 IN VARCHAR2(10), p2 OUT VARCHAR2(10)) AS
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BEGIN
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SET p1='p1new';
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SET p2='p2new';
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END;
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/
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SET @p1='p1', @p2='p2';
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CALL p1(@p1, @p2);
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SELECT @p1, @p2;
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@p1 @p2
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p1 p2new
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DROP PROCEDURE p1;
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# Testing Oracle-style assigment
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CREATE PROCEDURE p1 (p1 OUT VARCHAR2(10)) AS
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BEGIN
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p1:= 'p1new';
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END;
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/
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SET @p1='p1';
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CALL p1(@p1);
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SELECT @p1;
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@p1
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p1new
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DROP PROCEDURE p1;
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# Testing that NULL is a valid statement
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CREATE PROCEDURE p1(a INT) AS
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BEGIN
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NULL;
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END;
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/
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DROP PROCEDURE p1;
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CREATE PROCEDURE p1(a INT) AS
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a INT:=10;
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BEGIN
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IF a=10 THEN NULL; ELSE NULL; END IF;
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END;
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/
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DROP PROCEDURE p1;
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# Testing that (some) keyword_sp are allowed in Oracle-style assignments
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CREATE PROCEDURE p1 (action OUT INT) AS BEGIN action:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (clob OUT INT) AS BEGIN clob:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (enum OUT INT) AS BEGIN enum:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (via OUT INT) AS BEGIN via:=10; END;/
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DROP PROCEDURE p1/
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# Testing keyword_directly_assignable
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CREATE PROCEDURE p1 (ascii OUT INT) AS BEGIN ascii:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (backup OUT INT) AS BEGIN backup:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (binlog OUT INT) AS BEGIN binlog:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (byte OUT INT) AS BEGIN byte:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (cache OUT INT) AS BEGIN cache:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (checksum OUT INT) AS BEGIN checksum:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (checkpoint OUT INT) AS BEGIN checkpoint:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (column_add OUT INT) AS BEGIN column_add:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (column_check OUT INT) AS BEGIN column_check:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (column_create OUT INT) AS BEGIN column_create:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (column_delete OUT INT) AS BEGIN column_delete:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (column_get OUT INT) AS BEGIN column_get:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (commit OUT INT) AS BEGIN commit:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (deallocate OUT INT) AS BEGIN deallocate:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (examined OUT INT) AS BEGIN examined:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (execute OUT INT) AS BEGIN execute:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (flush OUT INT) AS BEGIN flush:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (format OUT INT) AS BEGIN format:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (get OUT INT) AS BEGIN get:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (help OUT INT) AS BEGIN help:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (host OUT INT) AS BEGIN host:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (install OUT INT) AS BEGIN install:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (option OUT INT) AS BEGIN option:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (options OUT INT) AS BEGIN options:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (owner OUT INT) AS BEGIN owner:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (parser OUT INT) AS BEGIN parser:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (port OUT INT) AS BEGIN port:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (prepare OUT INT) AS BEGIN prepare:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (remove OUT INT) AS BEGIN remove:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (reset OUT INT) AS BEGIN reset:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (restore OUT INT) AS BEGIN restore:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (rollback OUT INT) AS BEGIN rollback:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (security OUT INT) AS BEGIN security:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (server OUT INT) AS BEGIN server:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (shutdown OUT INT) AS BEGIN shutdown:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (signed OUT INT) AS BEGIN signed:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (socket OUT INT) AS BEGIN socket:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (slave OUT INT) AS BEGIN slave:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (slaves OUT INT) AS BEGIN slaves:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (soname OUT INT) AS BEGIN soname:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (start OUT INT) AS BEGIN start:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (stop OUT INT) AS BEGIN stop:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (stored OUT INT) AS BEGIN stored:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (unicode OUT INT) AS BEGIN unicode:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (uninstall OUT INT) AS BEGIN uninstall:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (upgrade OUT INT) AS BEGIN upgrade:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (wrapper OUT INT) AS BEGIN wrapper:=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (xa OUT INT) AS BEGIN xa:=10; END;/
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DROP PROCEDURE p1/
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# Testing that keyword_directly_not_assignable works in SET statements.
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CREATE PROCEDURE p1 (contains OUT INT) AS BEGIN SET contains=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (language OUT INT) AS BEGIN SET language=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (no OUT INT) AS BEGIN SET no=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (charset OUT INT) AS BEGIN SET charset=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (do OUT INT) AS BEGIN SET do=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (repair OUT INT) AS BEGIN SET repair=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (handler OUT INT) AS BEGIN SET handler=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (open OUT INT) AS BEGIN SET open=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (close OUT INT) AS BEGIN SET close=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (savepoint OUT INT) AS BEGIN SET savepoint=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (truncate OUT INT) AS BEGIN SET truncate=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (begin OUT INT) AS BEGIN SET begin=10; END;/
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DROP PROCEDURE p1/
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CREATE PROCEDURE p1 (end OUT INT) AS BEGIN SET end=10; END;/
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DROP PROCEDURE p1/
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# Testing that keyword_directly_not_assignable works in table/column names
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CREATE TABLE contains (contains INT);
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DROP TABLE contains;
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CREATE TABLE language (language INT);
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DROP TABLE language;
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CREATE TABLE no (no INT);
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DROP TABLE no;
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CREATE TABLE charset (charset INT);
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DROP TABLE charset;
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CREATE TABLE do (do INT);
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DROP TABLE do;
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CREATE TABLE repair (repair INT);
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DROP TABLE repair;
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CREATE TABLE handler (handler INT);
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DROP TABLE handler;
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CREATE TABLE open (open INT);
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DROP TABLE open;
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CREATE TABLE close (close INT);
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DROP TABLE close;
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CREATE TABLE savepoint (savepoint INT);
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DROP TABLE savepoint;
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CREATE TABLE truncate (truncate INT);
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DROP TABLE truncate;
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CREATE TABLE begin (begin INT);
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DROP TABLE begin;
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CREATE TABLE end (end INT);
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DROP TABLE end;
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# Testing top-level declarations
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CREATE PROCEDURE p1 (p1 OUT VARCHAR2(10))
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AS
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p2 VARCHAR(10);
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BEGIN
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p2:='p1new';
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p1:=p2;
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END;
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/
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SET @p1='p1';
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CALL p1(@p1);
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SELECT @p1;
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@p1
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p1new
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DROP PROCEDURE p1;
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CREATE FUNCTION f1 (p1 VARCHAR2(10)) RETURN VARCHAR(20)
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AS
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p2 VARCHAR(10);
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BEGIN
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p2:='new';
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RETURN CONCAT(p1, p2);
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END;
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/
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SET @p1='p1';
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SELECT f1(@p1);
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f1(@p1)
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p1new
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DROP FUNCTION f1;
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# Testing non-top declarations
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CREATE PROCEDURE p1 (p1 OUT VARCHAR2(10))
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AS
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BEGIN
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DECLARE
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p2 VARCHAR(10);
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BEGIN
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p2:='p1new';
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p1:=p2;
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END;
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DECLARE
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t1 VARCHAR(10);
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t2 VARCHAR(10);
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BEGIN
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END;
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END;
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/
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SET @p1='p1';
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CALL p1(@p1);
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SELECT @p1;
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@p1
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p1new
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DROP PROCEDURE p1;
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CREATE FUNCTION f1 (p1 VARCHAR2(10)) RETURN VARCHAR(20)
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AS
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BEGIN
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DECLARE
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p2 VARCHAR(10);
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BEGIN
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p2:='new';
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RETURN CONCAT(p1, p2);
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END;
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DECLARE
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t1 VARCHAR(10);
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t2 VARCHAR(10);
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BEGIN
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END;
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END;
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/
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SET @p1='p1';
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SELECT f1(@p1);
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f1(@p1)
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p1new
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DROP FUNCTION f1;
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# Testing BEGIN NOT ATOMIC with no declarations
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BEGIN NOT ATOMIC
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SELECT 1 AS a;
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END
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/
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a
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1
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# Testing BEGIN NOT ATOMIC with declarations
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# DECLARE starts a new block and thus must be followed by BEGIN .. END
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BEGIN NOT ATOMIC
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DECLARE
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i INT DEFAULT 5;
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x INT DEFAULT 10;
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BEGIN
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<<label>>
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WHILE i > 3 DO
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i:= i - 1;
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SELECT i;
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END WHILE label;
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END;
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END
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/
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i
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4
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i
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3
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# Testing exceptions
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CREATE TABLE t1 (c1 INT);
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CREATE PROCEDURE sp1 (p1 IN VARCHAR2(20), p2 OUT VARCHAR2(30))
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IS
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v1 INT;
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BEGIN
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EXCEPTION WHEN NOT FOUND THEN
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BEGIN
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p2 := 'def';
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END;
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SELECT c1 INTO v1 FROM t1;
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p2 := p1;
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END;
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/
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CALL sp1('abc', @a);
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SELECT @a;
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@a
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def
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DROP PROCEDURE sp1;
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DROP TABLE t1;
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