citus/src/test/regress/sql/multi_dropped_column_aliase...

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SQL

-- Tests that check that our query functionality behaves as expected when the
-- table schema is modified via ALTER statements.
SET citus.next_shard_id TO 620000;
SELECT count(*) FROM customer;
SELECT * FROM customer LIMIT 2;
ALTER TABLE customer ADD COLUMN new_column1 INTEGER;
ALTER TABLE customer ADD COLUMN new_column2 INTEGER;
SELECT count(*) FROM customer;
SELECT * FROM customer LIMIT 2;
ALTER TABLE customer DROP COLUMN new_column1;
ALTER TABLE customer DROP COLUMN new_column2;
SELECT count(*) FROM customer;
SELECT * FROM customer LIMIT 2;
-- Verify joins work with dropped columns.
SELECT count(*) FROM customer, orders WHERE c_custkey = o_custkey;
-- Test joinExpr aliases by performing an outer-join.
SELECT c_custkey
FROM (customer LEFT OUTER JOIN orders ON (c_custkey = o_custkey)) AS
test(c_custkey, c_nationkey)
INNER JOIN lineitem ON (test.c_custkey = l_orderkey)
ORDER BY 1
LIMIT 10;