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https://github.com/timescale/timescaledb.git
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500563ffe5
The extension now works with PostgreSQL 10, while retaining compatibility with version 9.6. PostgreSQL 10 has numerous internal changes to functions and APIs, which necessitates various glue code and compatibility wrappers to seamlessly retain backwards compatiblity with older versions. Test output might also differ between versions. In particular, the psql client generates version-specific output with `\d` and EXPLAINs might differ due to new query optimizations. The test suite has been modified as follows to handle these issues. First, tests now use version-independent functions to query system catalogs instead of using `\d`. Second, changes have been made to the test suite to be able to verify some test outputs against version-dependent reference files.
63 lines
2.6 KiB
SQL
63 lines
2.6 KiB
SQL
CREATE TABLE "btest"(time timestamp, time_alt timestamp, gp INTEGER, temp float, strid TEXT DEFAULT 'testing');
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SELECT create_hypertable('"btest"', 'time');
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INSERT INTO "btest" VALUES('2017-01-20T09:00:01', '2017-01-20T10:00:00', 1, 22.5);
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INSERT INTO "btest" VALUES('2017-01-20T09:00:21', '2017-01-20T09:00:59', 1, 21.2);
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INSERT INTO "btest" VALUES('2017-01-20T09:00:47', '2017-01-20T09:00:58', 1, 25.1);
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INSERT INTO "btest" VALUES('2017-01-20T09:00:02', '2017-01-20T09:00:57', 2, 35.5);
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INSERT INTO "btest" VALUES('2017-01-20T09:00:21', '2017-01-20T09:00:56', 2, 30.2);
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--TOASTED;
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INSERT INTO "btest" VALUES('2017-01-20T09:00:43', '2017-01-20T09:00:55', 2, 20.1, repeat('xyz', 1000000) );
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SELECT time, gp, temp FROM btest ORDER BY time;
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SELECT last(temp, time) FROM "btest";
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SELECT first(temp, time) FROM "btest";
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SELECT last(temp, time_alt) FROM "btest";
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SELECT first(temp, time_alt) FROM "btest";
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SELECT gp, last(temp, time) FROM "btest" GROUP BY gp ORDER BY gp;
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SELECT gp, first(temp, time) FROM "btest" GROUP BY gp ORDER BY gp;
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--check whole row
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SELECT gp, first("btest", time) FROM "btest" GROUP BY gp ORDER BY gp;
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--check toasted col
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SELECT gp, left(last(strid, time), 10) FROM "btest" GROUP BY gp ORDER BY gp;
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SELECT gp, last(temp, strid) FROM "btest" GROUP BY gp ORDER BY gp;
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--check null value as last element
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INSERT INTO "btest" VALUES('2018-01-20T09:00:43', '2017-01-20T09:00:55', 2, NULL);
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SELECT last(temp, time) FROM "btest";
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--check non-null element "overrides" NULL because it comes after.
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INSERT INTO "btest" VALUES('2019-01-20T09:00:43', '2017-01-20T09:00:55', 2, 30.5);
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SELECT last(temp, time) FROM "btest";
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--check null cmp elements
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INSERT INTO "btest" VALUES('2018-01-20T09:00:43', NULL, 2, 32.3);
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SELECT last(temp, time_alt) FROM "btest";
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--no overriding a cmp NULL
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INSERT INTO "btest" VALUES('2020-01-20T09:00:43', '2020-01-20T09:00:43', 2, 35.3);
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SELECT last(temp, time_alt) FROM "btest";
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--cmp nulls make the group NULL but don't interfere with other groups
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SELECT gp, last(temp, time_alt) FROM "btest" GROUP BY gp ORDER BY gp;
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--Previously, some bugs were found with NULLS and numeric types, so test that
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CREATE TABLE btest_numeric
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(
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time timestamp,
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quantity numeric
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);
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SELECT create_hypertable('btest_numeric', 'time');
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-- Insert rows, with rows that contain NULL values
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INSERT INTO btest_numeric VALUES
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('2019-01-20T09:00:43', NULL);
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SELECT last(quantity, time) FROM btest_numeric;
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--check non-null element "overrides" NULL because it comes after.
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INSERT INTO btest_numeric VALUES('2020-01-20T09:00:43', 30.5);
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SELECT last(quantity, time) FROM btest_numeric;
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