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195 lines
4.4 KiB
195 lines
4.4 KiB
--
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-- ALTER_TABLE
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-- add attribute
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--
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CREATE TABLE tmp (initial int4);
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ALTER TABLE tmp ADD COLUMN a int4;
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ALTER TABLE tmp ADD COLUMN b name;
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ALTER TABLE tmp ADD COLUMN c text;
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ALTER TABLE tmp ADD COLUMN d float8;
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ALTER TABLE tmp ADD COLUMN e float4;
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ALTER TABLE tmp ADD COLUMN f int2;
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ALTER TABLE tmp ADD COLUMN g polygon;
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ALTER TABLE tmp ADD COLUMN h abstime;
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ALTER TABLE tmp ADD COLUMN i char;
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ALTER TABLE tmp ADD COLUMN j abstime[];
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ALTER TABLE tmp ADD COLUMN k dt;
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ALTER TABLE tmp ADD COLUMN l tid;
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ALTER TABLE tmp ADD COLUMN m xid;
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ALTER TABLE tmp ADD COLUMN n oidvector;
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--ALTER TABLE tmp ADD COLUMN o lock;
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ALTER TABLE tmp ADD COLUMN p smgr;
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ALTER TABLE tmp ADD COLUMN q point;
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ALTER TABLE tmp ADD COLUMN r lseg;
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ALTER TABLE tmp ADD COLUMN s path;
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ALTER TABLE tmp ADD COLUMN t box;
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ALTER TABLE tmp ADD COLUMN u tinterval;
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ALTER TABLE tmp ADD COLUMN v datetime;
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ALTER TABLE tmp ADD COLUMN w timespan;
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ALTER TABLE tmp ADD COLUMN x float8[];
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ALTER TABLE tmp ADD COLUMN y float4[];
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ALTER TABLE tmp ADD COLUMN z int2[];
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INSERT INTO tmp (a, b, c, d, e, f, g, h, i, j, k, l, m, n, p, q, r, s, t, u,
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v, w, x, y, z)
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VALUES (4, 'name', 'text', 4.1, 4.1, 2, '(4.1,4.1,3.1,3.1)',
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'Mon May 1 00:30:30 1995', 'c', '{Mon May 1 00:30:30 1995, Monday Aug 24 14:43:07 1992, epoch}',
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314159, '(1,1)', 512,
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'1 2 3 4 5 6 7 8', 'magnetic disk', '(1.1,1.1)', '(4.1,4.1,3.1,3.1)',
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'(0,2,4.1,4.1,3.1,3.1)', '(4.1,4.1,3.1,3.1)', '["current" "infinity"]',
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'1/3', '1,name', '{1.0,2.0,3.0,4.0}', '{1.0,2.0,3.0,4.0}', '{1,2,3,4}');
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SELECT * FROM tmp;
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DROP TABLE tmp;
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-- the wolf bug - schema mods caused inconsistent row descriptors
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CREATE TABLE tmp (
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initial int4
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);
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ALTER TABLE tmp ADD COLUMN a int4;
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ALTER TABLE tmp ADD COLUMN b name;
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ALTER TABLE tmp ADD COLUMN c text;
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ALTER TABLE tmp ADD COLUMN d float8;
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ALTER TABLE tmp ADD COLUMN e float4;
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ALTER TABLE tmp ADD COLUMN f int2;
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ALTER TABLE tmp ADD COLUMN g polygon;
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ALTER TABLE tmp ADD COLUMN h abstime;
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ALTER TABLE tmp ADD COLUMN i char;
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ALTER TABLE tmp ADD COLUMN j abstime[];
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ALTER TABLE tmp ADD COLUMN k dt;
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ALTER TABLE tmp ADD COLUMN l tid;
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ALTER TABLE tmp ADD COLUMN m xid;
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ALTER TABLE tmp ADD COLUMN n oidvector;
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--ALTER TABLE tmp ADD COLUMN o lock;
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ALTER TABLE tmp ADD COLUMN p smgr;
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ALTER TABLE tmp ADD COLUMN q point;
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ALTER TABLE tmp ADD COLUMN r lseg;
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ALTER TABLE tmp ADD COLUMN s path;
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ALTER TABLE tmp ADD COLUMN t box;
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ALTER TABLE tmp ADD COLUMN u tinterval;
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ALTER TABLE tmp ADD COLUMN v datetime;
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ALTER TABLE tmp ADD COLUMN w timespan;
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ALTER TABLE tmp ADD COLUMN x float8[];
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ALTER TABLE tmp ADD COLUMN y float4[];
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ALTER TABLE tmp ADD COLUMN z int2[];
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INSERT INTO tmp (a, b, c, d, e, f, g, h, i, j, k, l, m, n, p, q, r, s, t, u,
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v, w, x, y, z)
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VALUES (4, 'name', 'text', 4.1, 4.1, 2, '(4.1,4.1,3.1,3.1)',
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'Mon May 1 00:30:30 1995', 'c', '{Mon May 1 00:30:30 1995, Monday Aug 24 14:43:07 1992, epoch}',
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314159, '(1,1)', 512,
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'1 2 3 4 5 6 7 8', 'magnetic disk', '(1.1,1.1)', '(4.1,4.1,3.1,3.1)',
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'(0,2,4.1,4.1,3.1,3.1)', '(4.1,4.1,3.1,3.1)', '["current" "infinity"]',
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'1/3', '1,name', '{1.0,2.0,3.0,4.0}', '{1.0,2.0,3.0,4.0}', '{1,2,3,4}');
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SELECT * FROM tmp;
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DROP TABLE tmp;
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--
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-- rename -
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-- should preserve indices, which we can check by seeing if a SELECT
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-- chooses an indexscan; however, in the absence of vacuum statistics
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-- it might not. Therefore, vacuum first.
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--
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VACUUM ANALYZE tenk1;
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ALTER TABLE tenk1 RENAME TO ten_k;
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-- 20 values, sorted
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SELECT unique1 FROM ten_k WHERE unique1 < 20;
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-- 20 values, sorted
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SELECT unique2 FROM ten_k WHERE unique2 < 20;
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-- 100 values, sorted
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SELECT hundred FROM ten_k WHERE hundred = 50;
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ALTER TABLE ten_k RENAME TO tenk1;
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-- 5 values, sorted
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SELECT unique1 FROM tenk1 WHERE unique1 < 5;
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-- FOREIGN KEY CONSTRAINT adding TEST
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CREATE TABLE tmp2 (a int primary key);
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CREATE TABLE tmp3 (a int, b int);
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-- Insert rows into tmp2 (pktable)
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INSERT INTO tmp2 values (1);
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INSERT INTO tmp2 values (2);
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INSERT INTO tmp2 values (3);
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INSERT INTO tmp2 values (4);
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-- Insert rows into tmp3
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INSERT INTO tmp3 values (1,10);
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INSERT INTO tmp3 values (1,20);
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INSERT INTO tmp3 values (5,50);
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-- Try (and fail) to add constraint due to invalid data
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ALTER TABLE tmp3 add constraint tmpconstr foreign key (a) references tmp2 match full;
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-- Delete failing row
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DELETE FROM tmp3 where a=5;
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-- Try (and succeed)
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ALTER TABLE tmp3 add constraint tmpconstr foreign key (a) references tmp2 match full;
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DROP TABLE tmp3;
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DROP TABLE tmp2;
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