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ALTER TABLE DROP COLUMN works. Patch by Christopher Kings-Lynne,
code review by Tom Lane. Remaining issues: functions that take or return tuple types are likely to break if one drops (or adds!) a column in the table defining the type. Need to think about what to do here. Along the way: some code review for recent COPY changes; mark system columns attnotnull = true where appropriate, per discussion a month ago.
This commit is contained in:
Tom Lane
@ -635,9 +635,9 @@ delete from atacc1;
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alter table atacc1 alter test set not null;
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-- try altering a non-existent column, should fail
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alter table atacc1 alter bar set not null;
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ERROR: ALTER TABLE: relation "atacc1" has no column "bar"
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ERROR: Relation "atacc1" has no column "bar"
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alter table atacc1 alter bar drop not null;
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ERROR: ALTER TABLE: relation "atacc1" has no column "bar"
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ERROR: Relation "atacc1" has no column "bar"
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-- try altering the oid column, should fail
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alter table atacc1 alter oid set not null;
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ERROR: ALTER TABLE: Cannot alter system attribute "oid"
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@ -707,7 +707,7 @@ ERROR: pg_atoi: error in "wrong_datatype": can't parse "wrong_datatype"
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alter table def_test alter column c2 set default 20;
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-- set defaults on a non-existent column: this should fail
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alter table def_test alter column c3 set default 30;
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ERROR: ALTER TABLE: relation "def_test" has no column "c3"
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ERROR: Relation "def_test" has no column "c3"
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-- set defaults on views: we need to create a view, add a rule
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-- to allow insertions into it, and then alter the view to add
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-- a default
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@ -735,3 +735,291 @@ select * from def_view_test;
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drop rule def_view_test_ins on def_view_test;
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drop view def_view_test;
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drop table def_test;
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-- alter table / drop column tests
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-- try altering system catalogs, should fail
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alter table pg_class drop column relname;
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ERROR: ALTER TABLE: relation "pg_class" is a system catalog
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-- try altering non-existent table, should fail
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alter table foo drop column bar;
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ERROR: Relation "foo" does not exist
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-- test dropping columns
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create table atacc1 (a int4 not null, b int4, c int4 not null, d int4);
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insert into atacc1 values (1, 2, 3, 4);
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alter table atacc1 drop a;
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alter table atacc1 drop a;
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ERROR: Relation "atacc1" has no column "a"
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-- SELECTs
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select * from atacc1;
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b | c | d
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---+---+---
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2 | 3 | 4
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(1 row)
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select * from atacc1 order by a;
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ERROR: Attribute "a" not found
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select * from atacc1 order by "........pg.dropped.1........";
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ERROR: Attribute "........pg.dropped.1........" not found
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select * from atacc1 group by a;
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ERROR: Attribute "a" not found
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select * from atacc1 group by "........pg.dropped.1........";
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ERROR: Attribute "........pg.dropped.1........" not found
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select atacc1.* from atacc1;
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b | c | d
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---+---+---
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2 | 3 | 4
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(1 row)
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select a from atacc1;
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ERROR: Attribute "a" not found
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select atacc1.a from atacc1;
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ERROR: No such attribute atacc1.a
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select b,c,d from atacc1;
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b | c | d
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---+---+---
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2 | 3 | 4
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(1 row)
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select a,b,c,d from atacc1;
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ERROR: Attribute "a" not found
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select * from atacc1 where a = 1;
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ERROR: Attribute "a" not found
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select "........pg.dropped.1........" from atacc1;
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ERROR: Attribute "........pg.dropped.1........" not found
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select atacc1."........pg.dropped.1........" from atacc1;
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ERROR: No such attribute atacc1.........pg.dropped.1........
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select "........pg.dropped.1........",b,c,d from atacc1;
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ERROR: Attribute "........pg.dropped.1........" not found
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select * from atacc1 where "........pg.dropped.1........" = 1;
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ERROR: Attribute "........pg.dropped.1........" not found
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-- UPDATEs
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update atacc1 set a = 3;
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ERROR: Relation "atacc1" has no column "a"
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update atacc1 set b = 2 where a = 3;
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ERROR: Attribute "a" not found
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update atacc1 set "........pg.dropped.1........" = 3;
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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update atacc1 set b = 2 where "........pg.dropped.1........" = 3;
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ERROR: Attribute "........pg.dropped.1........" not found
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-- INSERTs
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insert into atacc1 values (10, 11, 12, 13);
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ERROR: INSERT has more expressions than target columns
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insert into atacc1 values (default, 11, 12, 13);
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ERROR: INSERT has more expressions than target columns
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insert into atacc1 values (11, 12, 13);
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insert into atacc1 (a) values (10);
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ERROR: Relation "atacc1" has no column "a"
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insert into atacc1 (a) values (default);
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ERROR: Relation "atacc1" has no column "a"
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insert into atacc1 (a,b,c,d) values (10,11,12,13);
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ERROR: Relation "atacc1" has no column "a"
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insert into atacc1 (a,b,c,d) values (default,11,12,13);
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ERROR: Relation "atacc1" has no column "a"
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insert into atacc1 (b,c,d) values (11,12,13);
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insert into atacc1 ("........pg.dropped.1........") values (10);
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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insert into atacc1 ("........pg.dropped.1........") values (default);
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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insert into atacc1 ("........pg.dropped.1........",b,c,d) values (10,11,12,13);
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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insert into atacc1 ("........pg.dropped.1........",b,c,d) values (default,11,12,13);
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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-- DELETEs
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delete from atacc1 where a = 3;
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ERROR: Attribute "a" not found
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delete from atacc1 where "........pg.dropped.1........" = 3;
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ERROR: Attribute "........pg.dropped.1........" not found
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delete from atacc1;
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-- try dropping a non-existent column, should fail
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alter table atacc1 drop bar;
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ERROR: Relation "atacc1" has no column "bar"
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-- try dropping the oid column, should fail
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alter table atacc1 drop oid;
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ERROR: ALTER TABLE: Cannot drop system attribute "oid"
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-- try creating a view and altering that, should fail
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create view myview as select * from atacc1;
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select * from myview;
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b | c | d
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---+---+---
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(0 rows)
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alter table myview drop d;
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ERROR: ALTER TABLE: relation "myview" is not a table
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drop view myview;
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-- test some commands to make sure they fail on the dropped column
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analyze atacc1(a);
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ERROR: Relation "atacc1" has no column "a"
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analyze atacc1("........pg.dropped.1........");
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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vacuum analyze atacc1(a);
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ERROR: Relation "atacc1" has no column "a"
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vacuum analyze atacc1("........pg.dropped.1........");
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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comment on column atacc1.a is 'testing';
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ERROR: Relation "atacc1" has no column "a"
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comment on column atacc1."........pg.dropped.1........" is 'testing';
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 alter a set storage plain;
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ERROR: ALTER TABLE: relation "atacc1" has no column "a"
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alter table atacc1 alter "........pg.dropped.1........" set storage plain;
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ERROR: ALTER TABLE: relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 alter a set statistics 0;
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ERROR: ALTER TABLE: relation "atacc1" has no column "a"
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alter table atacc1 alter "........pg.dropped.1........" set statistics 0;
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ERROR: ALTER TABLE: relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 alter a set default 3;
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ERROR: Relation "atacc1" has no column "a"
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alter table atacc1 alter "........pg.dropped.1........" set default 3;
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 alter a drop default;
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ERROR: Relation "atacc1" has no column "a"
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alter table atacc1 alter "........pg.dropped.1........" drop default;
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 alter a set not null;
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ERROR: Relation "atacc1" has no column "a"
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alter table atacc1 alter "........pg.dropped.1........" set not null;
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 alter a drop not null;
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ERROR: Relation "atacc1" has no column "a"
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alter table atacc1 alter "........pg.dropped.1........" drop not null;
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ERROR: Relation "atacc1" has no column "........pg.dropped.1........"
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alter table atacc1 rename a to x;
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ERROR: renameatt: attribute "a" does not exist
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alter table atacc1 rename "........pg.dropped.1........" to x;
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ERROR: renameatt: attribute "........pg.dropped.1........" does not exist
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alter table atacc1 add primary key(a);
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ERROR: ALTER TABLE: column "a" named in key does not exist
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alter table atacc1 add primary key("........pg.dropped.1........");
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ERROR: ALTER TABLE: column "........pg.dropped.1........" named in key does not exist
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alter table atacc1 add unique(a);
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ERROR: ALTER TABLE: column "a" named in key does not exist
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alter table atacc1 add unique("........pg.dropped.1........");
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ERROR: ALTER TABLE: column "........pg.dropped.1........" named in key does not exist
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alter table atacc1 add check (a > 3);
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ERROR: Attribute "a" not found
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alter table atacc1 add check ("........pg.dropped.1........" > 3);
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ERROR: Attribute "........pg.dropped.1........" not found
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create table atacc2 (id int4 unique);
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NOTICE: CREATE TABLE / UNIQUE will create implicit index 'atacc2_id_key' for table 'atacc2'
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alter table atacc1 add foreign key (a) references atacc2(id);
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NOTICE: ALTER TABLE will create implicit trigger(s) for FOREIGN KEY check(s)
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ERROR: ALTER TABLE: column "a" referenced in foreign key constraint does not exist
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alter table atacc1 add foreign key ("........pg.dropped.1........") references atacc2(id);
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NOTICE: ALTER TABLE will create implicit trigger(s) for FOREIGN KEY check(s)
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ERROR: ALTER TABLE: column "........pg.dropped.1........" referenced in foreign key constraint does not exist
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alter table atacc2 add foreign key (id) references atacc1(a);
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NOTICE: ALTER TABLE will create implicit trigger(s) for FOREIGN KEY check(s)
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ERROR: UNIQUE constraint matching given keys for referenced table "atacc1" not found
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alter table atacc2 add foreign key (id) references atacc1("........pg.dropped.1........");
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NOTICE: ALTER TABLE will create implicit trigger(s) for FOREIGN KEY check(s)
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ERROR: UNIQUE constraint matching given keys for referenced table "atacc1" not found
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drop table atacc2;
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create index "testing_idx" on atacc1(a);
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ERROR: DefineIndex: attribute "a" not found
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create index "testing_idx" on atacc1("........pg.dropped.1........");
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ERROR: DefineIndex: attribute "........pg.dropped.1........" not found
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-- test create as and select into
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insert into atacc1 values (21, 22, 23);
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create table test1 as select * from atacc1;
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select * from test1;
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b | c | d
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----+----+----
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21 | 22 | 23
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(1 row)
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drop table test1;
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select * into test2 from atacc1;
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select * from test2;
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b | c | d
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----+----+----
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21 | 22 | 23
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(1 row)
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drop table test2;
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-- try dropping all columns
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alter table atacc1 drop c;
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alter table atacc1 drop d;
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alter table atacc1 drop b;
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ERROR: ALTER TABLE: Cannot drop last column from table "atacc1"
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select * from atacc1;
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b
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----
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21
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(1 row)
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drop table atacc1;
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-- test inheritance
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create table parent (a int, b int, c int);
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insert into parent values (1, 2, 3);
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alter table parent drop a;
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create table child (d varchar(255)) inherits (parent);
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insert into child values (12, 13, 'testing');
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select * from parent;
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b | c
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----+----
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2 | 3
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12 | 13
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(2 rows)
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select * from child;
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b | c | d
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----+----+---------
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12 | 13 | testing
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(1 row)
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alter table parent drop c;
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select * from parent;
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b
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----
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2
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12
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(2 rows)
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select * from child;
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b | d
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----+---------
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12 | testing
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(1 row)
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drop table child;
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drop table parent;
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-- test copy in/out
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create table test (a int4, b int4, c int4);
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insert into test values (1,2,3);
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alter table test drop a;
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copy test to stdout;
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2 3
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copy test(a) to stdout;
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ERROR: Relation "test" has no column "a"
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copy test("........pg.dropped.1........") to stdout;
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ERROR: Relation "test" has no column "........pg.dropped.1........"
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copy test from stdin;
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ERROR: copy: line 1, Extra data after last expected column
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lost synchronization with server, resetting connection
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select * from test;
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b | c
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---+---
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2 | 3
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(1 row)
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copy test from stdin;
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select * from test;
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b | c
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----+----
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2 | 3
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21 | 22
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(2 rows)
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copy test(a) from stdin;
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ERROR: Relation "test" has no column "a"
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copy test("........pg.dropped.1........") from stdin;
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ERROR: Relation "test" has no column "........pg.dropped.1........"
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copy test(b,c) from stdin;
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select * from test;
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b | c
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----+----
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2 | 3
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21 | 22
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31 | 32
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(3 rows)
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drop table test;
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@ -29,26 +29,44 @@ COPY x (b, d) from stdin;
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COPY x (a, b, c, d, e) from stdin;
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-- non-existent column in column list: should fail
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COPY x (xyz) from stdin;
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ERROR: COPY: Specified column "xyz" does not exist
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ERROR: Relation "x" has no column "xyz"
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-- too many columns in column list: should fail
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COPY x (a, b, c, d, e, d, c) from stdin;
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ERROR: COPY: Too many columns specified
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ERROR: Attribute "d" specified more than once
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-- missing data: should fail
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COPY x from stdin;
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ERROR: copy: line 1, COPY TEXT: Missing data for attribute 1
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ERROR: copy: line 1, Missing data for column "b"
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lost synchronization with server, resetting connection
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COPY x from stdin;
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ERROR: copy: line 1, COPY TEXT: Missing data for attribute 4
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ERROR: copy: line 1, Missing data for column "e"
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lost synchronization with server, resetting connection
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COPY x from stdin;
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ERROR: copy: line 1, COPY TEXT: Missing data for attribute 4
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ERROR: copy: line 1, Missing data for column "e"
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lost synchronization with server, resetting connection
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-- extra data: should fail
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COPY x from stdin;
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ERROR: copy: line 1, COPY TEXT: Extra data encountered
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ERROR: copy: line 1, Extra data after last expected column
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lost synchronization with server, resetting connection
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-- various COPY options: delimiters, oids, NULL string
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COPY x (b, c, d, e) from stdin with oids delimiter ',' null 'x';
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-- check results of copy in
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SELECT * FROM x;
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a | b | c | d | e
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-------+----+-------+--------+----------------------
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10000 | 21 | 31 | 41 | before trigger fired
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10001 | 22 | 32 | 42 | before trigger fired
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10002 | 23 | 33 | 43 | before trigger fired
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10003 | 24 | 34 | 44 | before trigger fired
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10004 | 25 | 35 | 45 | before trigger fired
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10005 | 26 | 36 | 46 | before trigger fired
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6 | | 45 | 80 | before trigger fired
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1 | 1 | stuff | test_1 | after trigger fired
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2 | 2 | stuff | test_2 | after trigger fired
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3 | 3 | stuff | test_3 | after trigger fired
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4 | 4 | stuff | test_4 | after trigger fired
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5 | 5 | stuff | test_5 | after trigger fired
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(12 rows)
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-- COPY w/ oids on a table w/o oids should fail
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CREATE TABLE no_oids (
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a int,
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@ -61,6 +79,7 @@ COPY no_oids FROM stdin WITH OIDS;
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ERROR: COPY: table "no_oids" does not have OIDs
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COPY no_oids TO stdout WITH OIDS;
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ERROR: COPY: table "no_oids" does not have OIDs
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-- check copy out
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COPY x TO stdout;
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10000 21 31 41 before trigger fired
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10001 22 32 42 before trigger fired
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@ -87,6 +106,19 @@ stuff after trigger fired
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stuff after trigger fired
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stuff after trigger fired
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stuff after trigger fired
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COPY x (b, e) TO stdout WITH NULL 'I''m null';
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21 before trigger fired
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22 before trigger fired
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23 before trigger fired
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24 before trigger fired
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25 before trigger fired
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26 before trigger fired
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I'm null before trigger fired
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1 after trigger fired
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2 after trigger fired
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3 after trigger fired
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4 after trigger fired
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5 after trigger fired
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DROP TABLE x;
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DROP FUNCTION fn_x_before();
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DROP FUNCTION fn_x_after();
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@ -571,3 +571,163 @@ select * from def_view_test;
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drop rule def_view_test_ins on def_view_test;
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drop view def_view_test;
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||||
drop table def_test;
|
||||
|
||||
-- alter table / drop column tests
|
||||
-- try altering system catalogs, should fail
|
||||
alter table pg_class drop column relname;
|
||||
|
||||
-- try altering non-existent table, should fail
|
||||
alter table foo drop column bar;
|
||||
|
||||
-- test dropping columns
|
||||
create table atacc1 (a int4 not null, b int4, c int4 not null, d int4);
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insert into atacc1 values (1, 2, 3, 4);
|
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alter table atacc1 drop a;
|
||||
alter table atacc1 drop a;
|
||||
|
||||
-- SELECTs
|
||||
select * from atacc1;
|
||||
select * from atacc1 order by a;
|
||||
select * from atacc1 order by "........pg.dropped.1........";
|
||||
select * from atacc1 group by a;
|
||||
select * from atacc1 group by "........pg.dropped.1........";
|
||||
select atacc1.* from atacc1;
|
||||
select a from atacc1;
|
||||
select atacc1.a from atacc1;
|
||||
select b,c,d from atacc1;
|
||||
select a,b,c,d from atacc1;
|
||||
select * from atacc1 where a = 1;
|
||||
select "........pg.dropped.1........" from atacc1;
|
||||
select atacc1."........pg.dropped.1........" from atacc1;
|
||||
select "........pg.dropped.1........",b,c,d from atacc1;
|
||||
select * from atacc1 where "........pg.dropped.1........" = 1;
|
||||
|
||||
-- UPDATEs
|
||||
update atacc1 set a = 3;
|
||||
update atacc1 set b = 2 where a = 3;
|
||||
update atacc1 set "........pg.dropped.1........" = 3;
|
||||
update atacc1 set b = 2 where "........pg.dropped.1........" = 3;
|
||||
|
||||
-- INSERTs
|
||||
insert into atacc1 values (10, 11, 12, 13);
|
||||
insert into atacc1 values (default, 11, 12, 13);
|
||||
insert into atacc1 values (11, 12, 13);
|
||||
insert into atacc1 (a) values (10);
|
||||
insert into atacc1 (a) values (default);
|
||||
insert into atacc1 (a,b,c,d) values (10,11,12,13);
|
||||
insert into atacc1 (a,b,c,d) values (default,11,12,13);
|
||||
insert into atacc1 (b,c,d) values (11,12,13);
|
||||
insert into atacc1 ("........pg.dropped.1........") values (10);
|
||||
insert into atacc1 ("........pg.dropped.1........") values (default);
|
||||
insert into atacc1 ("........pg.dropped.1........",b,c,d) values (10,11,12,13);
|
||||
insert into atacc1 ("........pg.dropped.1........",b,c,d) values (default,11,12,13);
|
||||
|
||||
-- DELETEs
|
||||
delete from atacc1 where a = 3;
|
||||
delete from atacc1 where "........pg.dropped.1........" = 3;
|
||||
delete from atacc1;
|
||||
|
||||
-- try dropping a non-existent column, should fail
|
||||
alter table atacc1 drop bar;
|
||||
|
||||
-- try dropping the oid column, should fail
|
||||
alter table atacc1 drop oid;
|
||||
|
||||
-- try creating a view and altering that, should fail
|
||||
create view myview as select * from atacc1;
|
||||
select * from myview;
|
||||
alter table myview drop d;
|
||||
drop view myview;
|
||||
|
||||
-- test some commands to make sure they fail on the dropped column
|
||||
analyze atacc1(a);
|
||||
analyze atacc1("........pg.dropped.1........");
|
||||
vacuum analyze atacc1(a);
|
||||
vacuum analyze atacc1("........pg.dropped.1........");
|
||||
comment on column atacc1.a is 'testing';
|
||||
comment on column atacc1."........pg.dropped.1........" is 'testing';
|
||||
alter table atacc1 alter a set storage plain;
|
||||
alter table atacc1 alter "........pg.dropped.1........" set storage plain;
|
||||
alter table atacc1 alter a set statistics 0;
|
||||
alter table atacc1 alter "........pg.dropped.1........" set statistics 0;
|
||||
alter table atacc1 alter a set default 3;
|
||||
alter table atacc1 alter "........pg.dropped.1........" set default 3;
|
||||
alter table atacc1 alter a drop default;
|
||||
alter table atacc1 alter "........pg.dropped.1........" drop default;
|
||||
alter table atacc1 alter a set not null;
|
||||
alter table atacc1 alter "........pg.dropped.1........" set not null;
|
||||
alter table atacc1 alter a drop not null;
|
||||
alter table atacc1 alter "........pg.dropped.1........" drop not null;
|
||||
alter table atacc1 rename a to x;
|
||||
alter table atacc1 rename "........pg.dropped.1........" to x;
|
||||
alter table atacc1 add primary key(a);
|
||||
alter table atacc1 add primary key("........pg.dropped.1........");
|
||||
alter table atacc1 add unique(a);
|
||||
alter table atacc1 add unique("........pg.dropped.1........");
|
||||
alter table atacc1 add check (a > 3);
|
||||
alter table atacc1 add check ("........pg.dropped.1........" > 3);
|
||||
create table atacc2 (id int4 unique);
|
||||
alter table atacc1 add foreign key (a) references atacc2(id);
|
||||
alter table atacc1 add foreign key ("........pg.dropped.1........") references atacc2(id);
|
||||
alter table atacc2 add foreign key (id) references atacc1(a);
|
||||
alter table atacc2 add foreign key (id) references atacc1("........pg.dropped.1........");
|
||||
drop table atacc2;
|
||||
create index "testing_idx" on atacc1(a);
|
||||
create index "testing_idx" on atacc1("........pg.dropped.1........");
|
||||
|
||||
-- test create as and select into
|
||||
insert into atacc1 values (21, 22, 23);
|
||||
create table test1 as select * from atacc1;
|
||||
select * from test1;
|
||||
drop table test1;
|
||||
select * into test2 from atacc1;
|
||||
select * from test2;
|
||||
drop table test2;
|
||||
|
||||
-- try dropping all columns
|
||||
alter table atacc1 drop c;
|
||||
alter table atacc1 drop d;
|
||||
alter table atacc1 drop b;
|
||||
select * from atacc1;
|
||||
|
||||
drop table atacc1;
|
||||
|
||||
-- test inheritance
|
||||
create table parent (a int, b int, c int);
|
||||
insert into parent values (1, 2, 3);
|
||||
alter table parent drop a;
|
||||
create table child (d varchar(255)) inherits (parent);
|
||||
insert into child values (12, 13, 'testing');
|
||||
|
||||
select * from parent;
|
||||
select * from child;
|
||||
alter table parent drop c;
|
||||
select * from parent;
|
||||
select * from child;
|
||||
|
||||
drop table child;
|
||||
drop table parent;
|
||||
|
||||
-- test copy in/out
|
||||
create table test (a int4, b int4, c int4);
|
||||
insert into test values (1,2,3);
|
||||
alter table test drop a;
|
||||
copy test to stdout;
|
||||
copy test(a) to stdout;
|
||||
copy test("........pg.dropped.1........") to stdout;
|
||||
copy test from stdin;
|
||||
10 11 12
|
||||
\.
|
||||
select * from test;
|
||||
copy test from stdin;
|
||||
21 22
|
||||
\.
|
||||
select * from test;
|
||||
copy test(a) from stdin;
|
||||
copy test("........pg.dropped.1........") from stdin;
|
||||
copy test(b,c) from stdin;
|
||||
31 32
|
||||
\.
|
||||
select * from test;
|
||||
drop table test;
|
||||
|
||||
|
||||
@ -76,6 +76,9 @@ COPY x (b, c, d, e) from stdin with oids delimiter ',' null 'x';
|
||||
500000,x,45,80,90
|
||||
\.
|
||||
|
||||
-- check results of copy in
|
||||
SELECT * FROM x;
|
||||
|
||||
-- COPY w/ oids on a table w/o oids should fail
|
||||
CREATE TABLE no_oids (
|
||||
a int,
|
||||
@ -89,8 +92,11 @@ INSERT INTO no_oids (a, b) VALUES (20, 30);
|
||||
COPY no_oids FROM stdin WITH OIDS;
|
||||
COPY no_oids TO stdout WITH OIDS;
|
||||
|
||||
-- check copy out
|
||||
COPY x TO stdout;
|
||||
COPY x (c, e) TO stdout;
|
||||
COPY x (b, e) TO stdout WITH NULL 'I''m null';
|
||||
|
||||
DROP TABLE x;
|
||||
DROP FUNCTION fn_x_before();
|
||||
DROP FUNCTION fn_x_after();
|
||||
|
||||
Reference in New Issue
Block a user