| create table a(i int); |
| |
| create language plpythonu; |
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| CREATE OR REPLACE FUNCTION f4() RETURNS TEXT AS $$ plpy.execute("select * from a order by i") $$ LANGUAGE plpythonu VOLATILE; |
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| select * from f4(); |
| |
| CREATE OR REPLACE FUNCTION normalize_si(text) RETURNS text AS $$ BEGIN RETURN substring($1, 9, 2) || substring($1, 7, 2) || substring($1, 5, 2) || substring($1, 1, 4); END; $$LANGUAGE 'plpgsql' IMMUTABLE; |
| |
| CREATE OR REPLACE FUNCTION si_lt(text, text) RETURNS boolean AS $$ BEGIN RETURN normalize_si($1) < normalize_si($2); END; $$ LANGUAGE 'plpgsql' IMMUTABLE; |
| |
| CREATE OPERATOR <# ( PROCEDURE=si_lt,LEFTARG=text, RIGHTARG=text); |
| |
| CREATE OR REPLACE FUNCTION si_same(text, text) RETURNS int AS $$ BEGIN IF normalize_si($1) < normalize_si($2) THEN RETURN -1; END IF; END; $$ LANGUAGE 'plpgsql' IMMUTABLE; |
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| CREATE OPERATOR CLASS sva_special_ops FOR TYPE text USING btree AS OPERATOR 1 <#, FUNCTION 1 si_same(text, text); |
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| CREATE RESOURCE QUEUE myqueue WITH (PARENT='pg_root', ACTIVE_STATEMENTS=20, MEMORY_LIMIT_CLUSTER=50%, CORE_LIMIT_CLUSTER=50%); |
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| CREATE TABLESPACE mytblspace FILESPACE dfs_system; |
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| CREATE TABLE foo(i int) TABLESPACE mytblspace; |
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| insert into foo(i) values(1234); |
| |
| COPY a TO '/tmp/a.txt'; |
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| COPY a FROM '/tmp/a.txt'; |
| |
| COPY a TO STDOUT WITH DELIMITER '|'; |
| |
| CREATE EXTERNAL TABLE ext_t ( N_NATIONKEY INTEGER ,N_NAME CHAR(25), N_REGIONKEY INTEGER ,N_COMMENT VARCHAR(152))location ('gpfdist://localhost:7070/nation_error50.tbl')FORMAT 'text' (delimiter '|')SEGMENT REJECT LIMIT 51; |
| |
| --select * from ext_t order by N_NATIONKEY; |
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| CREATE WRITABLE EXTERNAL TABLE ext_t2 (i int) LOCATION ('gpfdist://localhost:7070/ranger2.out') FORMAT 'TEXT' ( DELIMITER '|' NULL ' '); |
| |
| --insert into ext_t2(i) values(234); |
| |
| create schema sa; |
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| create temp table ta(i int); |
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| create view av as select * from a order by i; |
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| create table aa as select * from a order by i; |
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| create table sa.t(a int, b int); |
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| CREATE SEQUENCE myseq START 1; |
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| insert into a values(1); |
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| insert into a values(1); |
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| insert into a VALUES (nextval('myseq')); |
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| select * from pg_database, a order by oid, i limit 1; |
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| select generate_series(1,3); |
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| select * from av; |
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| SELECT setval('myseq', 1); |
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| SELECT * INTO aaa FROM a WHERE i > 0 order by i; |
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| PREPARE fooplan (int) AS INSERT INTO a VALUES($1);EXECUTE fooplan(1);DEALLOCATE fooplan; |
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| explain select * from a; |
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| CREATE FUNCTION scube_accum(numeric, numeric) RETURNS numeric AS 'select $1 + $2 * $2 * $2' LANGUAGE SQL IMMUTABLE RETURNS NULL ON NULL INPUT; |
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| CREATE AGGREGATE scube(numeric) ( SFUNC = scube_accum, STYPE = numeric, INITCOND = 0 ); |
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| ALTER AGGREGATE scube(numeric) RENAME TO scube2; |
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| CREATE TYPE mytype AS (f1 int, f2 int); |
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| CREATE FUNCTION getfoo() RETURNS SETOF mytype AS $$ SELECT i, i FROM a order by i $$ LANGUAGE SQL; |
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| select getfoo(); |
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| begin; DECLARE mycursor CURSOR FOR SELECT * FROM a order by i; FETCH FORWARD 2 FROM mycursor; commit; |
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| BEGIN; INSERT INTO a VALUES (1); SAVEPOINT my_savepoint; INSERT INTO a VALUES (1); RELEASE SAVEPOINT my_savepoint; COMMIT; |
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| \d |
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| analyze a; |
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| analyze; |
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| vacuum aa; |
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| vacuum analyze; |
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| truncate aa; |
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| alter table a rename column i to j; |