set allow_deprecated_syntax_for_merge_tree=1; DROP TABLE IF EXISTS truncate_test_log; DROP TABLE IF EXISTS truncate_test_memory; DROP TABLE IF EXISTS truncate_test_tiny_log; DROP TABLE IF EXISTS truncate_test_stripe_log; DROP TABLE IF EXISTS truncate_test_merge_tree; DROP TABLE IF EXISTS truncate_test_materialized_view; DROP TABLE IF EXISTS truncate_test_materialized_depend; CREATE TABLE truncate_test_set(id UInt64) ENGINE = Set; CREATE TABLE truncate_test_log(id UInt64) ENGINE = Log; CREATE TABLE truncate_test_memory(id UInt64) ENGINE = Memory; CREATE TABLE truncate_test_tiny_log(id UInt64) ENGINE = TinyLog; CREATE TABLE truncate_test_stripe_log(id UInt64) ENGINE = StripeLog; CREATE TABLE truncate_test_merge_tree(p Date, k UInt64) ENGINE = MergeTree(p, k, 1); CREATE TABLE truncate_test_materialized_depend(p Date, k UInt64) ENGINE = Null; CREATE MATERIALIZED VIEW truncate_test_materialized_view ENGINE = MergeTree(p, k, 1) AS SELECT * FROM truncate_test_materialized_depend; SELECT '======Before Truncate======'; INSERT INTO truncate_test_set VALUES(0); INSERT INTO truncate_test_log VALUES(1); INSERT INTO truncate_test_memory VALUES(1); INSERT INTO truncate_test_tiny_log VALUES(1); INSERT INTO truncate_test_stripe_log VALUES(1); INSERT INTO truncate_test_merge_tree VALUES('2000-01-01', 1); INSERT INTO truncate_test_materialized_depend VALUES('2000-01-01', 1); SELECT * FROM system.numbers WHERE number NOT IN truncate_test_set LIMIT 1; SELECT * FROM truncate_test_log; SELECT * FROM truncate_test_memory; SELECT * FROM truncate_test_tiny_log; SELECT * FROM truncate_test_stripe_log; SELECT * FROM truncate_test_merge_tree; SELECT * FROM truncate_test_materialized_view; SELECT '======After Truncate And Empty======'; TRUNCATE TABLE truncate_test_set; TRUNCATE TABLE truncate_test_log; TRUNCATE TABLE truncate_test_memory; TRUNCATE TABLE truncate_test_tiny_log; TRUNCATE TABLE truncate_test_stripe_log; TRUNCATE TABLE truncate_test_merge_tree; TRUNCATE TABLE truncate_test_materialized_view; SELECT * FROM system.numbers WHERE number NOT IN truncate_test_set LIMIT 1; SELECT * FROM truncate_test_log; SELECT * FROM truncate_test_memory; SELECT * FROM truncate_test_tiny_log; SELECT * FROM truncate_test_stripe_log; SELECT * FROM truncate_test_merge_tree; SELECT * FROM truncate_test_materialized_view; SELECT '======After Truncate And Insert Data======'; INSERT INTO truncate_test_set VALUES(0); INSERT INTO truncate_test_log VALUES(1); INSERT INTO truncate_test_memory VALUES(1); INSERT INTO truncate_test_tiny_log VALUES(1); INSERT INTO truncate_test_stripe_log VALUES(1); INSERT INTO truncate_test_merge_tree VALUES('2000-01-01', 1); INSERT INTO truncate_test_materialized_depend VALUES('2000-01-01', 1); SELECT * FROM system.numbers WHERE number NOT IN truncate_test_set LIMIT 1; SELECT * FROM truncate_test_log; SELECT * FROM truncate_test_memory; SELECT * FROM truncate_test_tiny_log; SELECT * FROM truncate_test_stripe_log; SELECT * FROM truncate_test_merge_tree; SELECT * FROM truncate_test_materialized_view; DROP TABLE IF EXISTS truncate_test_set; DROP TABLE IF EXISTS truncate_test_log; DROP TABLE IF EXISTS truncate_test_memory; DROP TABLE IF EXISTS truncate_test_tiny_log; DROP TABLE IF EXISTS truncate_test_stripe_log; DROP TABLE IF EXISTS truncate_test_merge_tree; DROP TABLE IF EXISTS truncate_test_materialized_view; DROP TABLE IF EXISTS truncate_test_materialized_depend;