bb0fad1dbe
* refactor: rename flinksql to flink * refactor: rename pgsql to postgresql * refactor: rename trinosql to trino * refactor: replace all default exports with named export * refactor: rename basicParser to basicSQL * refactor: rename basic-parser-types to types * refactor: replace arrow func with plain func
189 lines
5.8 KiB
SQL
189 lines
5.8 KiB
SQL
-- SELECT
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WITH RECURSIVE query_name (id) AS (SELECT id FROM table_expression)
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SELECT DISTINCT ON (col1,col2) random() AS name1 FROM table_expression
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WHERE name1=name1
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GROUP BY DISTINCT id
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HAVING sum(len) < interval '5 hours'
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WINDOW w AS (PARTITION BY depname ORDER BY salary DESC)
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UNION ALL (SELECT * FROM others)
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ORDER BY salary DESC
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FETCH NEXT ROWS ONLY
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OFFSET start ROWS
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FOR UPDATE OF table_name, table_name2 NOWAIT;
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SELECT;
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SELECT * FROM db.tbs GROUP BY (col1 > 3, col2 < 8) ORDER BY col3 > 9;
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WITH query_name (id) AS (SELECT id FROM table_expression) SELECT DISTINCT random() AS name1 FROM table_expression WHERE name1=name1 GROUP BY id HAVING sum(len) < interval '5 hours' WINDOW w AS (PARTITION BY depname ORDER BY salary DESC) INTERSECT DISTINCT (SELECT * FROM others) ORDER BY salary ASC OFFSET start FETCH NEXT ROW ONLY FOR NO KEY UPDATE;
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WITH query_name (id) AS (SELECT id FROM table_expression) SELECT DISTINCT ON (col1) random() AS name1 FROM table_expression WHERE name1=name1 GROUP BY id HAVING sum(len) < interval '5 hours' WINDOW w AS (PARTITION BY depname ORDER BY salary DESC) EXCEPT (SELECT * FROM others) ORDER BY salary USING > NULLS FIRST OFFSET start FETCH NEXT ROW ONLY FOR SHARE;
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WITH query_name (id) AS (SELECT id FROM table_expression) SELECT DISTINCT ON (col1) random() AS name1 FROM table_expression WHERE name1=name1 GROUP BY id HAVING sum(len) < interval '5 hours' WINDOW w AS (PARTITION BY depname ORDER BY salary DESC) EXCEPT (SELECT * FROM others) ORDER BY salary USING > NULLS FIRST OFFSET start FETCH NEXT ROW ONLY FOR KEY SHARE OF table_name NOWAIT;
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-- SELECT INTO
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WITH RECURSIVE query_name (id) AS (SELECT id FROM table_expression)
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SELECT DISTINCT ON (col2, col3)
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INTO TEMPORARY TABLE new_table
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FROM from_item
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WHERE name2=name1
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GROUP BY name
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HAVING s > 8
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WINDOW window_name AS ( RANGE UNBOUNDED PRECEDING )
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INTERSECT DISTINCT (SELECT * FROM tb)
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ORDER BY expression_1 USING > NULLS FIRST
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LIMIT ALL
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OFFSET start ROW
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FOR UPDATE OF table_name NOWAIT;
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SELECT INTO new_table;
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-- The Most Easy
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SELECT * ;
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-- Querying a Table
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SELECT city, temp_lo, temp_hi, prcp, date FROM weather;
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SELECT city, (temp_hi+temp_lo)/2 AS temp_avg, date FROM weather;
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SELECT * FROM weather
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WHERE city = 'San Francisco' AND prcp > 0.0;
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SELECT * FROM weather
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ORDER BY city;
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SELECT * FROM weather
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ORDER BY city, temp_lo;
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SELECT DISTINCT city
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FROM weather;
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SELECT DISTINCT city
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FROM weather
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ORDER BY city;
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-- Joins Between Tables
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SELECT weather.city, weather.temp_lo, weather.temp_hi,
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weather.prcp, weather.date, cities.location
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FROM weather NATURAL LEFT OUTER JOIN cities
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WHERE cities.name = weather.city;
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SELECT W1.city, W1.temp_lo AS low, W1.temp_hi AS high,
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W2.city, W2.temp_lo AS low, W2.temp_hi AS high
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FROM weather W1 NATURAL RIGHT OUTER JOIN weather W2
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WHERE W1.temp_lo < W2.temp_lo
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AND W1.temp_hi > W2.temp_hi;
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SELECT *
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FROM weather w NATURAL FULL OUTER JOIN cities c
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WHERE w.city = c.name;
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SELECT *
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FROM weather w CROSS JOIN cities c
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WHERE w.city = c.name;
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-- Aggregate Functions
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SELECT city, max(temp_lo)
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FROM weather
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WHERE city LIKE 'S%'
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GROUP BY city
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HAVING max(temp_lo) < 40;
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-- Window Functions
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SELECT depname, empno, salary, enroll_date
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FROM
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(SELECT depname, empno, salary, enroll_date,
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rank() OVER (PARTITION BY depname ORDER BY salary DESC, empno) AS pos
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FROM empsalary
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) AS ss
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WHERE pos < 3;
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SELECT sum(salary) OVER w, avg(salary) OVER w
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FROM empsalary
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WINDOW w AS (PARTITION BY depname ORDER BY salary DESC);
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SELECT name, altitude
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FROM ONLY cities
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WHERE altitude > 500;
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SELECT name, altitude
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FROM cities*
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WHERE altitude > 500;
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SELECT c.tableoid, c.name, c.altitude
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FROM cities c
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WHERE c.altitude > 500;
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-- Overview
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WITH query_name (id) AS (SELECT id FROM table_expression) SELECT random() FROM table_expression ORDER BY salary DESC
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-- Partitioning and Constraint Exclusion
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SET constraint_exclusion = on;
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SELECT count(*) FROM measurement WHERE logdate >= DATE '2008-01-01';
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-- Table Functions
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SELECT * FROM foo
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WHERE foosubid IN (
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SELECT foosubid
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FROM getfoo(foo.fooid) z
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WHERE z.fooid = foo.fooid
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);
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SELECT *
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FROM dblink('dbname=mydb', 'SELECT proname, prosrc FROM pg_proc')
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AS t1(proname name, prosrc text)
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WHERE proname LIKE 'bytea%';
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-- The Schema Search Path
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SELECT 3 OPERATOR(pg_catalog.+) 4;
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-- Monetary Types
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SELECT '12.34'::float8::numeric::money;
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-- Binary Data Types
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SELECT '\xDEADBEEF';
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-- bytea Escape Format
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SELECT 'abc \153\154\155 \052\251\124'::bytea;
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-- Date/Time Types Interval Input
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SELECT EXTRACT(days from '80 hours'::interval);
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-- Text Search Types
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SELECT 'a fat cat sat on a mat and ate a fat rat'::tsvector;
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SELECT $$the lexeme ' ' contains spaces$$::tsvector;
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SELECT $$the lexeme 'Joe''s' contains a quote$$::tsvector;
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SELECT 'a:1 fat:2 cat:3 sat:4 on:5 a:6 mat:7 and:8 ate:9 a:10 fat:11 rat:12'::tsvector;
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SELECT to_tsvector('english', 'The Fat Rats');
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SELECT 'fat & rat & ! cat'::tsquery;
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SELECT to_tsquery('Fat:ab & Cats');
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-- Arrays --Accessing Arrays
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SELECT name FROM sal_emp WHERE pay_by_quarter[1] <> pay_by_quarter[2];
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SELECT schedule[1:2][2] FROM sal_emp WHERE name = 'Bill';
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-- Arrays -- Searching in Arrays
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SELECT * FROM sal_emp WHERE pay_by_quarter[1] = 10000 OR
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pay_by_quarter[2] = 10000 OR
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pay_by_quarter[3] = 10000 OR
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pay_by_quarter[4] = 10000;
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-- Array Input and Output Syntax
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SELECT f1[1][-2][3] AS e1, f1[1][-1][5] AS e2
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FROM (SELECT '[1:1][-2:-1][3:5]={{{1,2,3},{4,5,6}}}'::int[] AS f1) AS ss;
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-- Containment
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SELECT int4range(10, 20) @> 3;
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-- Object Identifier Types
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SELECT * FROM pg_attribute WHERE attrelid = 'mytable'::regclass; |