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https://github.com/timescale/timescaledb.git
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f3df02d50c
Previously the default chunk time in microseconds was too large for a SMALLINT or INTEGER field. Now, we only assign a default value if the type is TIMESTAMP or TIMESTAMPTZ. Integer timestamps, such as SMALLINT, INTEGER, and BIGINT, need to be explicitly set since only the user knows what units the numbers represent. Further, we check to make sure the chunk time interval is not too large for SMALLINT and INTEGER so as to avoid confusing problems later when the user goes to insert.
79 lines
3.2 KiB
SQL
79 lines
3.2 KiB
SQL
\ir include/insert_single.sql
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\d+ "one_Partition".*
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SELECT * FROM "one_Partition" ORDER BY "timeCustom", device_id;
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--test that we can insert data into a 1-dimensional table (only time partitioning)
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CREATE TABLE "1dim"(time timestamp PRIMARY KEY, temp float);
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SELECT create_hypertable('"1dim"', 'time');
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:01', 22.5) RETURNING *;
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:21', 21.2);
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:47', 25.1);
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SELECT * FROM "1dim";
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CREATE TABLE regular_table (time timestamp, temp float);
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INSERT INTO regular_table SELECT * FROM "1dim";
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SELECT * FROM regular_table;
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TRUNCATE TABLE regular_table;
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INSERT INTO regular_table VALUES('2017-01-20T09:00:59', 29.2);
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INSERT INTO "1dim" SELECT * FROM regular_table;
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SELECT * FROM "1dim";
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SELECT "1dim" FROM "1dim";
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-- Create a three-dimensional table
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CREATE TABLE "3dim" (time timestamp, temp float, device text, location text);
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SELECT create_hypertable('"3dim"', 'time', 'device', 2);
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SELECT add_dimension('"3dim"', 'location', 2);
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INSERT INTO "3dim" VALUES('2017-01-20T09:00:01', 22.5, 'blue', 'nyc');
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INSERT INTO "3dim" VALUES('2017-01-20T09:00:21', 21.2, 'brown', 'sthlm');
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INSERT INTO "3dim" VALUES('2017-01-20T09:00:47', 25.1, 'yellow', 'la');
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--show the constraints on the three-dimensional chunk
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\d+ _timescaledb_internal._hyper_3_6_chunk
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--queries should work in three dimensions
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SELECT * FROM "3dim";
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-- test that explain works
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EXPLAIN
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INSERT INTO "3dim" VALUES('2017-01-21T09:00:01', 32.9, 'green', 'nyc'),
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('2017-01-21T09:00:47', 27.3, 'purple', 'la') RETURNING *;
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EXPLAIN
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WITH "3dim_insert" AS (
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INSERT INTO "3dim" VALUES('2017-01-21T09:01:44', 19.3, 'black', 'la') RETURNING time, temp
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), regular_insert AS (
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INSERT INTO regular_table VALUES('2017-01-21T10:00:51', 14.3) RETURNING time, temp
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) INSERT INTO "1dim" (SELECT time, temp FROM "3dim_insert" UNION SELECT time, temp FROM regular_insert);
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-- test prepared statement INSERT
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PREPARE "1dim_plan" (timestamp, float) AS
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INSERT INTO "1dim" VALUES($1, $2) ON CONFLICT (time) DO NOTHING;
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EXECUTE "1dim_plan" ('2017-04-17 23:35', 31.4);
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EXECUTE "1dim_plan" ('2017-04-17 23:35', 32.6);
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-- test prepared statement with generic plan (forced when no parameters)
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PREPARE "1dim_plan_generic" AS
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INSERT INTO "1dim" VALUES('2017-05-18 17:24', 18.3);
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EXECUTE "1dim_plan_generic";
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SELECT * FROM "1dim" ORDER BY time;
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SELECT * FROM "3dim" ORDER BY (time, device);
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-- Test that large intervals and no interval fail for INTEGER
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\set ON_ERROR_STOP 0
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CREATE TABLE "inttime_err"(time INTEGER PRIMARY KEY, temp float);
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SELECT create_hypertable('"inttime_err"', 'time', chunk_time_interval=>2147483648);
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SELECT create_hypertable('"inttime_err"', 'time');
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\set ON_ERROR_STOP 1
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SELECT create_hypertable('"inttime_err"', 'time', chunk_time_interval=>2147483647);
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-- Test that large intervals and no interval fail for SMALLINT
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\set ON_ERROR_STOP 0
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CREATE TABLE "smallinttime_err"(time SMALLINT PRIMARY KEY, temp float);
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SELECT create_hypertable('"smallinttime_err"', 'time', chunk_time_interval=>65536);
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SELECT create_hypertable('"smallinttime_err"', 'time');
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\set ON_ERROR_STOP 1
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SELECT create_hypertable('"smallinttime_err"', 'time', chunk_time_interval=>65535);
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