ClickHouse/dbms/tests/queries/bugs/default_prewhere.sql
proller 6c1cb02172 CLICKHOUSE-4523 Fix "Column '0' already exists" in SELECT .. PREWHERE on column with DEFAULT (#5397)
* CLICKHOUSE-4523 Fix "Column '0' already exists" in SELECT .. PREWHERE on column with DEFAULT

* fix style

* Fix build

* Update iostream_debug_helpers.cpp

* Update evaluateMissingDefaults.cpp
2019-05-25 14:03:12 +03:00

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SQL

DROP TABLE IF EXISTS test_generic_events_all;
CREATE TABLE test_generic_events_all (APIKey UInt8, SessionType UInt8) ENGINE = MergeTree() PARTITION BY APIKey ORDER BY tuple();
INSERT INTO test_generic_events_all VALUES( 42, 42 );
ALTER TABLE test_generic_events_all ADD COLUMN OperatingSystem UInt64 DEFAULT APIKey+1;
SELECT * FROM test_generic_events_all WHERE APIKey = 42 AND SessionType = 42;
-- InterpreterSelectQuery: MergeTreeWhereOptimizer: condition "APIKey = 42" moved to PREWHERE
SELECT OperatingSystem FROM test_generic_events_all WHERE APIKey = 42;
SELECT OperatingSystem FROM test_generic_events_all WHERE APIKey = 42 AND SessionType = 42;
SELECT OperatingSystem FROM test_generic_events_all PREWHERE APIKey = 42 WHERE SessionType = 42;
SELECT * FROM test_generic_events_all PREWHERE APIKey = 42 WHERE SessionType = 42;
DROP TABLE IF EXISTS test_generic_events_all;