存储过程框架 create or replace function public.sf_get_polyline_time_seq(in_platnumber text, in_time text) --in_time '2018-02-21' returns table( id text, polyline text, timestamps text, start_time text ) as $BODY$ DECLARE begin return ; end; $BODY$ language 'plpgsql'; 2.2数据处理过...
函数返回一张表: returnstable(列名1类型,列名2类型,...)案例1: create or replacefunctionget_film(patternvarchar(50))returnstable(filmvarchar(50),releaseyear integer)as$$ beginreturnquery select title,cast(release_yearasinteger)fromfilm where title like pattern;end;$$ language plpgsql;selectget_film...
postgresql PL/pgSQL return setof和TABLE的区别 在pg中,广泛的使用了表函数代替视图,返回集合有两种定义,setof和table。他们的区别在于table明确定义了字段名和类型,如下: CREATE FUNCTION events_by_type_1(text) RETURNS TABLE(id bigint, name text) AS $$ SELECT id, name FROM events WHERE type = $1...
CREATE OR REPLACE FUNCTION skytf.func_test_result_single ( in_id integer) RETURNS SETOF varcharas $$ DECLARE v_name varchar; BEGIN for v_name in ( (select name from test_result1 where id = in_id) union (select name from test_result2 where id = in_id) )loop RETURN NEXT v_name;...
CREATEORREPLACEFUNCTION"public"."get_attribute_name"("id_in"numeric)RETURNSTABLE("product_id"varchar)AS$BODY$BEGINRETURNQUERYSELECTnameFROMproduct_attribute_valueWHEREid=id_in;END;$BODY$LANGUAGEplpgsqlVOLATILECOST100ROWS1000 使用函数 SELECTsola.so_name,sola.state,sola.price_unit,sola.product_uom_qty...
-- 创建存储过程 CREATE FUNCTION get_employee_list() RETURNS TABLE (id INT, name TEXT, salary NUMERIC) AS $$ BEGIN RETURN QUERY SELECT id, name, salary FROM employees; END; $$ LANGUAGE plpgsql; -- 调用存储过程 SELECT * FROM get_employee_list(); ...
CREATE [ OR REPLACE ] FUNCTION name ( [ [ argmode ] [ argname ] argtype [ { DEFAULT | = } default_expr ] [, ...] ] ) [ RETURNS rettype | RETURNS TABLE ( column_name column_type [, ...] ) ] { LANGUAGE lang_name | TRANSFORM { FOR TYPE type_name } [, ... ] | WINDO...
方法3CREATE OR REPLACE FUNCTION execute(filter varchar(36)) RETURNS TABLE (id varchar(36), name varchar(200)) AS $$ BEGIN RETURN QUERY EXECUTE 'SELECT id,name FROM dept where id = $1;' USING filter; END; $$ LANGUAGE PLPGSQL; CREATE OR REPLACE FUNCTION execute(filter varchar(36),filter...
QUERY：CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int) RETURNS TABLE (txt&...
用途RETURN QUERY：CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int)RETURNS TABLE (txt ...