CREATEORREPLACEFUNCTIONfuncname ( in_idinteger)RETURNSSETOFvarcharas$$DECLAREv_rec RECORD;BEGINreturnquery ( (selectnamefromtest_result1whereid=in_id)union(selectnamefromtest_result2whereid=in_id) );return;END; $$ LANGUAGE PLPGSQL; 注意:如果 返回类型为 setof,最好用如下方法 RETURNQUERYEXECUTESQ...
CREATEORREPLACEFUNCTIONfuncname ( in_idinteger)RETURNSSETOFvarcharas$$DECLAREv_rec RECORD;BEGINreturnquery ( (selectnamefromtest_result1whereid=in_id)union(selectnamefromtest_result2whereid=in_id) );return;END; $$ LANGUAGE PLPGSQL; 注意:如果 返回类型为 setof,最好用如下方法 RETURNQUERYEXECUTESQ...
在PostgreSQL中,可以使用函数来返回表及其总计数。下面是一个示例函数: ```sql CREATE OR REPLACE FUNCTION get_table_with_count() RE...
CREATEORREPLACEFUNCTIONfuncname ( in_idinteger)RETURNSSETOFvarcharas $$DECLARE v_rec RECORD;BEGINreturnquery ( (selectnamefromtest_result1whereid=in_id)union(selectnamefromtest_result2whereid= in_id) ); return;END;$$LANGUAGE PLPGSQL;注意：如果 返回...
postgres 存储过程输出 pgsql 存储过程,PostgreSQL存储过程定义格式如下:■结构PL/pgSQL是一种块结构的语言,比较方便的是用pgAdminIII新建Function,填入一些参数就可以了。基本上是这样的:CREATEORREPLACEFUNCTION函数名(参数1,[整型int4,整型数组_int4,...])RETURNS
不使用CTE/With RecursiveEN目录 1. 从根遍历到叶 2. 从叶遍历到根 3. 确定叶子节点、分支节点和根...
CREATE OR REPLACE FUNCTION get_users(num1 text, num2 text) RETURNS TABLE (id INT, name VARCHAR) AS $$ DECLARE value INTEGER; BEGIN value := CAST(num1 AS INTEGER); RETURN QUERY SELECT f_id, f_name FROM tb_user WHERE f_id = value OR f_name = num2; END; $$ LANGUAGE plpgsql;...
这是一个希望更好的版本：CREATE FUNCTION rowcount_all(schema_name text...
--create extension时,.sql文件中会执行执行创建就handler和创建fdw的语句,pg_foreign_data_wrapper中插入记录 CREATE FUNCTION postgres_fdw_handler() RETURNS fdw_handler AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE FUNCTION postgres_fdw_validator(text[], oid) RETURNS void AS 'MODULE_PATHNAME' LANGUAGE...
How can i call a javascript function to run when innerHtml changes with Ajax? How can I cast a querystring string value to a enum? How can I check if my web can be accesed from outside my network? how can i check query string is null or not? How can I check Size in (KB) for...