* Execute a CREATE FUNCTION (or CREATE PROCEDURE) utility statement. * 执行CREATE FUNCTION (or CREATE PROCEDURE)语句 */ObjectAddressCreateFunction(ParseState *pstate, CreateFunctionStmt *stmt) {char*probin_str;char*prosrc_str; Oid prorettype;boolreturnsSet;char*language; Oid languageOid; Oid lang...
If you drop and then recreate a function, the new function is not the same entity as the old; you will have to drop existing rules, views, triggers, etc. that refer to the old function. Use CREATE OR REPLACE FUNCTION to change a function definition without breaking objects...
1 因为要开发适合目前公司中的基于POSTGRESQL 的运行维护产品,同时基于POSTGRESQL 的数据库有云数据库,基于程序的安全性和部署的便利性,一部分维护的程序应该以存储过程的方式,被部署在数据库中,方便外部程序调用。 2 基于POSTGRESQL 大部分的存储过程的教学内容还是在create function部分 ,在POSTGRESQL 11 后的版本的数...
CREATE FUNCTION part_trig() RETURNS trigger LANGUAGE plpgsql AS $$ BEGIN BEGIN /* try to create a table for the new partition */ EXECUTE format('CREATE TABLE %I (LIKE tab INCLUDING INDEXES)', 'tab_' || to_char(NEW.ts, 'YYYYMMDD')); /* * tell listener to attach the partition * ...
CREATE FUNCTION "public"."NewProc"(IN "p_date" varchar, OUT "out_vv" int4) RETURNS "pg_catalog"."int4" AS $BODY$ declare v_sqlcode INTEGER; v_date date; v_pre_date date; v_sqlerrm varchar(4000); v_begintime varchar(20); ...
CREATE FUNCTION sum_n_product_with_tab (x int) RETURNS setof table1 AS $$ SELECT $1 + tab.y, $1 * tab.y FROM tab; $$ LANGUAGE SQL; 这种情况下定义的函数,调用成功后,会逐行返回一个表,如果使用plpython3u框架,将函数的返回值设置为一个yield类型就可以。yield的结果可以是与返回值映射的字...
#vi log_history_insert_trigger.sqlCREATE OR REPLACE FUNCTION log_history_insert_trigger() RETURNS TRIGGER AS $$ BEGIN IF ( NEW.logdate >= DATE'2011-01-01'AND NEW.logdate < DATE'2012-01-01') THEN INSERT INTO log_history_2011 VALUES (NEW.*); ...
CREATE FUNCTION dup(int) RETURNS TABLE(f1 int, f2 text) AS $$ SELECT $1, CAST($1 AS text) || ' is text' $$ LANGUAGE SQL; 其他语言函数实现: plpgsql(可参考: postgresql.org/docs/cur): CREATE OR REPLACE FUNCTION cs_fmt_browser_version(v_name varchar, v_version varchar) RETURNS varch...
CREATE OR REPLACE FUNCTION "public"."f_inittables1"(arr _text)RETURNS "pg_catalog"."void" AS $BODY$DECLAREscount INTEGER;rownum integer := 1;currsnum text;strSQL text;BEGINscount:=array_length(arr,1);while rownum <= scount LOOPcurrsnum:=arr[rownum];RAISE NOTICE '这里是%', currsnum...
用途RETURN QUERY：CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int) RETURNS ...