mirror of https://github.com/citusdata/citus.git
86 lines
2.6 KiB
SQL
86 lines
2.6 KiB
SQL
--
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-- Testing ALTER TABLE on cstore_fdw tables.
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--
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CREATE FOREIGN TABLE test_alter_table (a int, b int, c int) SERVER cstore_server;
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WITH sample_data AS (VALUES
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(1, 2, 3),
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(4, 5, 6),
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(7, 8, 9)
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)
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INSERT INTO test_alter_table SELECT * FROM sample_data;
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-- drop a column
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ALTER FOREIGN TABLE test_alter_table DROP COLUMN a;
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-- test analyze
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ANALYZE test_alter_table;
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-- verify select queries run as expected
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SELECT * FROM test_alter_table;
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SELECT a FROM test_alter_table;
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SELECT b FROM test_alter_table;
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-- verify insert runs as expected
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INSERT INTO test_alter_table (SELECT 3, 5, 8);
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INSERT INTO test_alter_table (SELECT 5, 8);
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-- add a column with no defaults
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN d int;
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SELECT * FROM test_alter_table;
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INSERT INTO test_alter_table (SELECT 3, 5, 8);
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SELECT * FROM test_alter_table;
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-- add a fixed-length column with default value
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN e int default 3;
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SELECT * from test_alter_table;
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INSERT INTO test_alter_table (SELECT 1, 2, 4, 8);
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SELECT * from test_alter_table;
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-- add a variable-length column with default value
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN f text DEFAULT 'TEXT ME';
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SELECT * from test_alter_table;
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INSERT INTO test_alter_table (SELECT 1, 2, 4, 8, 'ABCDEF');
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SELECT * from test_alter_table;
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-- drop couple of columns
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ALTER FOREIGN TABLE test_alter_table DROP COLUMN c;
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ALTER FOREIGN TABLE test_alter_table DROP COLUMN e;
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ANALYZE test_alter_table;
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SELECT * from test_alter_table;
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SELECT count(*) from test_alter_table;
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SELECT count(t.*) from test_alter_table t;
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-- unsupported default values
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN g boolean DEFAULT isfinite(current_date);
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN h DATE DEFAULT current_date;
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SELECT * FROM test_alter_table;
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ALTER FOREIGN TABLE test_alter_table ALTER COLUMN g DROP DEFAULT;
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SELECT * FROM test_alter_table;
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ALTER FOREIGN TABLE test_alter_table ALTER COLUMN h DROP DEFAULT;
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ANALYZE test_alter_table;
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SELECT * FROM test_alter_table;
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-- unsupported type change
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN i int;
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN j float;
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ALTER FOREIGN TABLE test_alter_table ADD COLUMN k text;
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-- this is valid type change
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ALTER FOREIGN TABLE test_alter_table ALTER COLUMN i TYPE float;
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-- this is not valid
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ALTER FOREIGN TABLE test_alter_table ALTER COLUMN j TYPE int;
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-- text / varchar conversion is valid both ways
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ALTER FOREIGN TABLE test_alter_table ALTER COLUMN k TYPE varchar(20);
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ALTER FOREIGN TABLE test_alter_table ALTER COLUMN k TYPE text;
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DROP FOREIGN TABLE test_alter_table;
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