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--
-- UPDATE syntax tests
--
CREATE TABLE update_test (
a INT DEFAULT 10,
b INT,
c TEXT
);
INSERT INTO update_test VALUES (5, 10, 'foo');
INSERT INTO update_test(b, a) VALUES (15, 10);
SELECT * FROM update_test;
UPDATE update_test SET a = DEFAULT, b = DEFAULT;
SELECT * FROM update_test;
-- aliases for the UPDATE target table
UPDATE update_test AS t SET b = 10 WHERE t.a = 10;
SELECT * FROM update_test;
UPDATE update_test t SET b = t.b + 10 WHERE t.a = 10;
SELECT * FROM update_test;
--
-- Test VALUES in FROM
--
UPDATE update_test SET a=v.i FROM (VALUES(100, 20)) AS v(i, j)
WHERE update_test.b = v.j;
SELECT * FROM update_test;
--
-- Test multiple-set-clause syntax
--
UPDATE update_test SET (c,b,a) = ('bugle', b+11, DEFAULT) WHERE c = 'foo';
SELECT * FROM update_test;
UPDATE update_test SET (c,b) = ('car', a+b), a = a + 1 WHERE a = 10;
SELECT * FROM update_test;
-- fail, multi assignment to same column:
UPDATE update_test SET (c,b) = ('car', a+b), b = a + 1 WHERE a = 10;
-- XXX this should work, but doesn't yet:
UPDATE update_test SET (a,b) = (select a,b FROM update_test where c = 'foo')
WHERE a = 10;
-- if an alias for the target table is specified, don't allow references
-- to the original table name
BEGIN;
SET LOCAL add_missing_from = false;
UPDATE update_test AS t SET b = update_test.b + 10 WHERE t.a = 10;
ROLLBACK;
DROP TABLE update_test;