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Fix unexpected error messages for various flavors of ALTER TABLE
Some commands of ALTER TABLE could fail with the following error: ERROR: "tab" is of the wrong type This error is unexpected, as all the code paths leading to ATWrongRelkindError() should use a supported set of relkinds to generate correct error messages. This commit closes the gap with such mistakes, by adding all the missing relkind combinations. Tests are added to check all the problems found. Note that some combinations are not used, but these are left around as it could have an impact on applications relying on this code. 2ed532e has done a much larger refactoring on HEAD to make such error messages easier to manage in the long-term, so nothing is needed there. Author: Kyotaro Horiguchi Reviewed-by: Peter Eisentraut, Ahsan Hadi, Michael Paquier Discussion: https://postgr.es/m/20210216.181415.368926598204753659.horikyota.ntt@gmail.com Backpatch-through: 11
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‎src/backend/commands/tablecmds.c

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Original file line numberDiff line numberDiff line change
@@ -5649,6 +5649,12 @@ ATWrongRelkindError(Relation rel, int allowed_targets)
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case ATT_TABLE | ATT_MATVIEW | ATT_INDEX:
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msg = _("\"%s\" is not a table, materialized view, or index");
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break;
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case ATT_TABLE | ATT_MATVIEW | ATT_INDEX | ATT_PARTITIONED_INDEX:
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msg = _("\"%s\" is not a table, materialized view, index, or partitioned index");
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break;
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case ATT_TABLE | ATT_MATVIEW | ATT_INDEX | ATT_PARTITIONED_INDEX | ATT_FOREIGN_TABLE:
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msg = _("\"%s\" is not a table, materialized view, index, partitioned index, or foreign table");
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break;
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case ATT_TABLE | ATT_MATVIEW | ATT_FOREIGN_TABLE:
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msg = _("\"%s\" is not a table, materialized view, or foreign table");
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break;
@@ -5661,6 +5667,9 @@ ATWrongRelkindError(Relation rel, int allowed_targets)
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case ATT_TABLE | ATT_MATVIEW | ATT_INDEX | ATT_FOREIGN_TABLE:
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msg = _("\"%s\" is not a table, materialized view, index, or foreign table");
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break;
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case ATT_TABLE | ATT_PARTITIONED_INDEX:
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msg = _("\"%s\" is not a table or partitioned index");
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break;
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case ATT_VIEW:
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msg = _("\"%s\" is not a view");
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break;

‎src/test/regress/expected/alter_table.out

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Original file line numberDiff line numberDiff line change
@@ -120,6 +120,11 @@ ALTER INDEX attmp_idx ALTER COLUMN 4 SET STATISTICS 1000;
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ERROR: column number 4 of relation "attmp_idx" does not exist
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ALTER INDEX attmp_idx ALTER COLUMN 2 SET STATISTICS -1;
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DROP TABLE attmp;
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-- fails with incorrect object type
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CREATE VIEW at_v1 AS SELECT 1 as a;
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ALTER TABLE at_v1 ALTER COLUMN a SET STATISTICS 0;
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ERROR: "at_v1" is not a table, materialized view, index, partitioned index, or foreign table
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DROP VIEW at_v1;
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--
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-- rename - check on both non-temp and temp tables
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--
@@ -4100,6 +4105,11 @@ ERROR: remainder for hash partition must be less than modulus
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ALTER TABLE hash_parted ATTACH PARTITION fail_part FOR VALUES WITH (MODULUS 3, REMAINDER 2);
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ERROR: every hash partition modulus must be a factor of the next larger modulus
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DROP TABLE fail_part;
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-- fails with incorrect object type
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CREATE VIEW at_v1 AS SELECT 1 as a;
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ALTER TABLE at_v1 ATTACH PARTITION dummy default;
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ERROR: "at_v1" is not a table or partitioned index
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DROP VIEW at_v1;
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--
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-- DETACH PARTITION
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--

‎src/test/regress/expected/foreign_data.out

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Original file line numberDiff line numberDiff line change
@@ -880,6 +880,8 @@ ALTER FOREIGN TABLE ft1 DROP COLUMN c9;
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ALTER FOREIGN TABLE ft1 SET SCHEMA foreign_schema;
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ALTER FOREIGN TABLE ft1 SET TABLESPACE ts; -- ERROR
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ERROR: relation "ft1" does not exist
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ALTER FOREIGN TABLE foreign_schema.ft1 SET TABLESPACE ts; -- ERROR
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ERROR: "ft1" is not a table, materialized view, index, or partitioned index
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ALTER FOREIGN TABLE foreign_schema.ft1 RENAME c1 TO foreign_column_1;
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ALTER FOREIGN TABLE foreign_schema.ft1 RENAME TO foreign_table_1;
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\d foreign_schema.foreign_table_1

‎src/test/regress/sql/alter_table.sql

Lines changed: 9 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -158,6 +158,10 @@ ALTER INDEX attmp_idx ALTER COLUMN 2 SET STATISTICS -1;
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DROP TABLE attmp;
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-- fails with incorrect object type
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CREATE VIEW at_v1 AS SELECT 1 as a;
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ALTER TABLE at_v1 ALTER COLUMN a SET STATISTICS 0;
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DROP VIEW at_v1;
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--
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-- rename - check on both non-temp and temp tables
@@ -2640,6 +2644,11 @@ ALTER TABLE hash_parted ATTACH PARTITION fail_part FOR VALUES WITH (MODULUS 8, R
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ALTER TABLE hash_parted ATTACH PARTITION fail_part FOR VALUES WITH (MODULUS 3, REMAINDER 2);
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DROP TABLE fail_part;
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-- fails with incorrect object type
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CREATE VIEW at_v1 AS SELECT 1 as a;
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ALTER TABLE at_v1 ATTACH PARTITION dummy default;
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DROP VIEW at_v1;
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--
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-- DETACH PARTITION
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--

‎src/test/regress/sql/foreign_data.sql

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Original file line numberDiff line numberDiff line change
@@ -408,6 +408,7 @@ ALTER FOREIGN TABLE ft1 DROP COLUMN IF EXISTS no_column;
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ALTER FOREIGN TABLE ft1 DROP COLUMN c9;
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ALTER FOREIGN TABLE ft1 SET SCHEMA foreign_schema;
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ALTER FOREIGN TABLE ft1 SET TABLESPACE ts; -- ERROR
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ALTER FOREIGN TABLE foreign_schema.ft1 SET TABLESPACE ts; -- ERROR
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ALTER FOREIGN TABLE foreign_schema.ft1 RENAME c1 TO foreign_column_1;
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ALTER FOREIGN TABLE foreign_schema.ft1 RENAME TO foreign_table_1;
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\d foreign_schema.foreign_table_1

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