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https://github.com/timescale/timescaledb.git
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6adce4cbd8
This change refactors the handling of TRUNCATE so that it is performed directly in process utility without doing an upcall to PL/pgSQL. It also adds handling for the ONLY modifier to TRUNCATE, which shouldn't work on a hypertable. TRUNCATE now generates an error if TRUNCATE ONLY is used on a hypertable.
72 lines
2.1 KiB
PL/PgSQL
72 lines
2.1 KiB
PL/PgSQL
\o /dev/null
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\ir include/insert_two_partitions.sql
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\o
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SELECT * FROM _timescaledb_catalog.hypertable;
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SELECT * FROM _timescaledb_catalog.chunk;
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SELECT * FROM test.show_subtables('"two_Partitions"');
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SELECT * FROM "two_Partitions";
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SET client_min_messages = WARNING;
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TRUNCATE "two_Partitions";
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SELECT * FROM _timescaledb_catalog.hypertable;
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SELECT * FROM _timescaledb_catalog.chunk;
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-- should be empty
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SELECT * FROM test.show_subtables('"two_Partitions"');
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SELECT * FROM "two_Partitions";
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INSERT INTO public."two_Partitions"("timeCustom", device_id, series_0, series_1) VALUES
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(1257987600000000000, 'dev1', 1.5, 1),
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(1257987600000000000, 'dev1', 1.5, 2),
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(1257894000000000000, 'dev2', 1.5, 1),
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(1257894002000000000, 'dev1', 2.5, 3);
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SELECT * FROM _timescaledb_catalog.chunk;
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CREATE VIEW dependent_view AS SELECT * FROM _timescaledb_internal._hyper_1_5_chunk;
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CREATE OR REPLACE FUNCTION test_trigger()
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RETURNS TRIGGER LANGUAGE PLPGSQL AS
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$BODY$
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DECLARE
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cnt INTEGER;
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BEGIN
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RAISE WARNING 'FIRING trigger when: % level: % op: % cnt: % trigger_name %',
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tg_when, tg_level, tg_op, cnt, tg_name;
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IF TG_OP = 'DELETE' THEN
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RETURN OLD;
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END IF;
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RETURN NEW;
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END
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$BODY$;
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-- test truncate on a chunk
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CREATE TRIGGER _test_truncate_before
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BEFORE TRUNCATE ON _timescaledb_internal._hyper_1_5_chunk
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FOR EACH STATEMENT EXECUTE PROCEDURE test_trigger();
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CREATE TRIGGER _test_truncate_after
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AFTER TRUNCATE ON _timescaledb_internal._hyper_1_5_chunk
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FOR EACH STATEMENT EXECUTE PROCEDURE test_trigger();
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\set ON_ERROR_STOP 0
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TRUNCATE "two_Partitions";
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-- cannot TRUNCATE ONLY a hypertable
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TRUNCATE ONLY "two_Partitions" CASCADE;
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\set ON_ERROR_STOP 1
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-- create a regular table to make sure we can truncate it in the same call
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CREATE TABLE truncate_normal (color int);
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INSERT INTO truncate_normal VALUES (1);
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SELECT * FROM truncate_normal;
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SELECT * FROM test.show_subtables('"two_Partitions"');
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TRUNCATE "two_Partitions", truncate_normal CASCADE;
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-- should be empty
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SELECT * FROM test.show_subtables('"two_Partitions"');
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SELECT * FROM "two_Partitions";
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SELECT * FROM truncate_normal;
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