mirror of https://github.com/citusdata/citus.git
94 lines
3.2 KiB
SQL
94 lines
3.2 KiB
SQL
--
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-- Test querying columnar tables.
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--
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CREATE SCHEMA columnar_join;
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SET search_path to columnar_join, public;
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-- Settings to make the result deterministic
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SET datestyle = "ISO, YMD";
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-- Query uncompressed data
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SELECT count(*) FROM contestant;
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SELECT avg(rating), stddev_samp(rating) FROM contestant;
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SELECT country, avg(rating) FROM contestant WHERE rating > 2200
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GROUP BY country ORDER BY country;
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SELECT * FROM contestant ORDER BY handle;
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-- all special column accesses should fail
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SELECT ctid FROM contestant;
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SELECT cmin FROM contestant;
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SELECT cmax FROM contestant;
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SELECT xmin FROM contestant;
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SELECT xmax FROM contestant;
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SELECT tableid FROM contestant;
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-- sample scans should fail
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SELECT * FROM contestant TABLESAMPLE SYSTEM(0.1);
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-- Query compressed data
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SELECT count(*) FROM contestant_compressed;
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SELECT avg(rating), stddev_samp(rating) FROM contestant_compressed;
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SELECT country, avg(rating) FROM contestant_compressed WHERE rating > 2200
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GROUP BY country ORDER BY country;
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SELECT * FROM contestant_compressed ORDER BY handle;
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-- Verify that we handle whole-row references correctly
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SELECT to_json(v) FROM contestant v ORDER BY rating LIMIT 1;
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-- Test variables used in expressions
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CREATE TABLE union_first (a int, b int) USING columnar;
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CREATE TABLE union_second (a int, b int) USING columnar;
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INSERT INTO union_first SELECT a, a FROM generate_series(1, 5) a;
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INSERT INTO union_second SELECT a, a FROM generate_series(11, 15) a;
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(SELECT a*1, b FROM union_first) union all (SELECT a*1, b FROM union_second);
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DROP TABLE union_first, union_second;
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-- https://github.com/citusdata/citus/issues/4600
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CREATE TABLE INT8_TBL_columnar(q1 int8, q2 int8) using columnar;
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INSERT INTO INT8_TBL_columnar VALUES(' 123 ',' 456');
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INSERT INTO INT8_TBL_columnar VALUES('123 ','4567890123456789');
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INSERT INTO INT8_TBL_columnar VALUES('4567890123456789','123');
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INSERT INTO INT8_TBL_columnar VALUES(+4567890123456789,'4567890123456789');
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INSERT INTO INT8_TBL_columnar VALUES('+4567890123456789','-4567890123456789');
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explain (costs off, summary off) select * from
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INT8_TBL_columnar a left join lateral
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(select b.q1 as bq1, c.q1 as cq1, least(a.q1,b.q1,c.q1) from
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INT8_TBL_columnar b cross join INT8_TBL_columnar c) ss
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on a.q2 = ss.bq1;
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explain (costs off, summary off)
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SELECT COUNT(*) FROM INT8_TBL_columnar t1 JOIN
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LATERAL (SELECT * FROM INT8_TBL_columnar t2 WHERE t1.q1 = t2.q1)
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as foo ON (true);
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CREATE TABLE INT8_TBL_heap (LIKE INT8_TBL_columnar) USING heap;
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INSERT INTO INT8_TBL_heap SELECT * FROM INT8_TBL_columnar;
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CREATE TABLE result_columnar AS
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select * from
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INT8_TBL_columnar a left join lateral
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(select b.q1 as bq1, c.q1 as cq1, least(a.q1,b.q1,c.q1) from
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INT8_TBL_columnar b cross join INT8_TBL_columnar c) ss
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on a.q2 = ss.bq1;
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CREATE TABLE result_regular AS
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select * from
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INT8_TBL_heap a left join lateral
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(select b.q1 as bq1, c.q1 as cq1, least(a.q1,b.q1,c.q1) from
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INT8_TBL_heap b cross join INT8_TBL_heap c) ss
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on a.q2 = ss.bq1;
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-- 2 results should be identical, so the following should be empty
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(table result_columnar EXCEPT table result_regular)
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UNION
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(table result_regular EXCEPT table result_columnar);
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SET client_min_messages TO WARNING;
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DROP SCHEMA columnar_join CASCADE;
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