cheat.sheets/sheets/_db2/ddl

--Create a schema
CREATE SCHEMA myschema

--Create a table in a specific tablespace
CREATE TABLE mytable1 (mycol1 SMALLINT NOT NULL, mycol2 VARCHAR(16)) IN ts1 INDEX IN ts2
CREATE TABLE myschema.othertable (mycol1 SMALLINT)

--Create a table like another one
CREATE TABLE mytable2 LIKE mytable1 IN ts1 INDEX IN ts2

--Comment on table and column
COMMENT ON TABLE mytable1 IS 'This is the comment of the table'
COMMENT ON COLUMN mytable1.mycol1 IS 'Description of the field'

--Declare a temporary table
DECALRE GLOBAL TEMPORARY TABLE mytemptab1 (col1 SMALLINT, col2 TIMESTAMP, col3 VARCHAR(50))

--Create a global temporary tablespace
CREATE GLOBAL TEMPORARY TABLE tmptable (col1 INTEGER)

--Create an index
CREATE INDEX myidx ON mytable1 (mycol1)

--Create a primary key constraint
ALTER TABLE mytable1 ADD CONSTRAINT pkmytable PRIMARY KEY (mycol1)

--Create a foreign key
ALTER TABLE mytable2 ADD CONSTRAINT fkmytable FOREIGN KEY (mycol1) REFERENCES mytable1 (mycol1)

--Create a check constraint
ALTER TABLE mytable1 ADD CONSTRAINT chk CHECK (mycol2 in ('a', 'b', 'c', 'd', 'e', 'f', 'g'))

--Enforce a constraint
ALTER TABLE mytable2 ALTER FOREIGN KEY fkmytable ENFORCED
ALTER TABLE mytable1 ALTER CHECK chk ENFORCED

--Not enforce a constraint
ALTER TABLE mytable2 ALTER FOREIGN KEY fkmytable NOT ENFORCED

--Drop a table
DROP TABLE mytable

--Rename a table
RENAME TABLE mytable2 AS myothertable

--Truncate a table
TRUNCATE TABLE mytable1 IMMEDIATE

--Create a sequence
CREATE SEQUENCE myseq AS INTEGER

--Restart sequence
ALTER SEQUENCE myseq RESTART WITH 15

--Crete a stored procedure
CREATE OR REPLACE PROCEDURE myproc (IN val SMALLINT, OUT ret VARCHAR(16)) SPECIFIC myproc1 BEGIN SET ret = (SELECT mycol2 FROM mytable1 WHERE mycol1 = val); END @

--Create a trigger
CREATE TRIGGER copy_value AFTER INSERT ON mytable1 REFERENCING NEW AS N FOR EACH ROW INSERT INTO mytable2 VALUES (N.mycol1, N.mycol2)

--Create a view
CREATE VIEW VW1 AS SELECT mycol2 FROM mytable1