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Fix dblink_build_sql_insert() and related functions to handle dropped

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columns correctly.  In passing, get rid of some dead logic in the
underlying get_sql_insert() etc functions --- there is no caller that
will pass null value-arrays to them.

Per bug report from Robert Voinea.
This commit is contained in:
Tom Lane
2010-06-15 19:04:15 +00:00
parent 4a96908575
commit 3b3706d2cf
3 changed files with 102 additions and 33 deletions
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37
contrib/dblink/expected/dblink.out
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@ -887,3 +887,40 @@ SELECT dblink_disconnect();
OK
(1 row)
-- test dropped columns in dblink_build_sql_insert, dblink_build_sql_update
CREATE TEMP TABLE test_dropped
(
col1 INT NOT NULL DEFAULT 111,
id SERIAL PRIMARY KEY,
col2 INT NOT NULL DEFAULT 112,
col2b INT NOT NULL DEFAULT 113
);
NOTICE: CREATE TABLE will create implicit sequence "test_dropped_id_seq" for serial column "test_dropped.id"
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "test_dropped_pkey" for table "test_dropped"
INSERT INTO test_dropped VALUES(default);
ALTER TABLE test_dropped
DROP COLUMN col1,
DROP COLUMN col2,
ADD COLUMN col3 VARCHAR(10) NOT NULL DEFAULT 'foo',
ADD COLUMN col4 INT NOT NULL DEFAULT 42;
SELECT dblink_build_sql_insert('test_dropped', '2', 1,
ARRAY['1'::TEXT], ARRAY['2'::TEXT]);
dblink_build_sql_insert
---------------------------------------------------------------------------
INSERT INTO test_dropped(id,col2b,col3,col4) VALUES('2','113','foo','42')
(1 row)
SELECT dblink_build_sql_update('test_dropped', '2', 1,
ARRAY['1'::TEXT], ARRAY['2'::TEXT]);
dblink_build_sql_update
-------------------------------------------------------------------------------------------
UPDATE test_dropped SET id = '2', col2b = '113', col3 = 'foo', col4 = '42' WHERE id = '2'
(1 row)
SELECT dblink_build_sql_delete('test_dropped', '2', 1,
ARRAY['2'::TEXT]);
dblink_build_sql_delete
-----------------------------------------
DELETE FROM test_dropped WHERE id = '2'
(1 row)