CREATE FUNCTION defines a new function. CREATE OR REPLACE FUNCTION will either create a new function, or replace an existing definition. To be able to define a function, the user must have the USAGE privilege on the language. If a schema name is...
*/FUNC_PARAM_IN ='i',/* input only */FUNC_PARAM_OUT ='o',/* output only */FUNC_PARAM_INOUT ='b',/* both */FUNC_PARAM_VARIADIC ='v',/* variadic (always input) */FUNC_PARAM_TABLE ='t'/* table function output column */} FunctionParameterMode;typedefstructFunctionParameter{ Node...
\echo Use "CRAETE EXTENSION test_tabble" to load this file. \quit CREATE TABLE pg_invoke(para1 float4,para12 float4, ret float);/* 创建一个表格 */ CREATE FUNCTION pgEuropean(float4,float4)/* 创建一个函数 */ RETURNS float4 AS 'MODULE_PATHNAME' , 'pgEuropean' LANGUAGE C STRICT PARA...
postgres=# create database test;CREATEDATABASEpostgres=# alter database testsettablespace mytbs;ALTERDATABASEpostgres=# \c test You are now connected to database"test"asuser"postgres".test=# create tabletb_mytps(i int,namevarchar(32))tablespace mytbs;CREATETABLE 插入实验数据 代码语言:javascript...
The first line uses PostgreSQL'sCREATE OR REPLACE FUNCTIONstatement to create the function. The name of the function isfib. TheCREATE OR REPLACE FUNCTIONstatement is more useful in practice than the simpleCREATE FUNCTIONstatement, because it will drop an existing function with the same name and ...
shulanxtdb=#CREATETRIGGERexample_trigger AFTERINSERTONCOMPANYFOREACH ROWEXECUTEPROCEDUREauditlogfunc(); auditlogfunc() 是 PostgreSQL 一个程序,其定义如下: CREATEORREPLACEFUNCTIONauditlogfunc()RETURNSTRIGGERAS$example_table$BEGININSERTINTOAUDIT(EMP_ID, ENTRY_DATE)VALUES(new.ID,current_timestamp);RETURNNEW...
The first line uses PostgreSQL's CREATE OR REPLACE FUNCTION statement to create the function. The name of the function is fib. The CREATE OR REPLACE FUNCTION statement is more useful in practice than the simple CREATE FUNCTION statement...
declare begin NEW.id := NEW.id+1; raise notice '%, id:%', TG_NAME, NEW.id; -- 修改NEW.id , 并返回修改后的NEW. 影响插入数据的并不是NEW变量本身, 而是return的值, 这个在后面将会有例子举证. return NEW; end; language plpgsql; CREATE FUNCTION – 创建触发器 postgres=# create trigger ...
create or replace function match_chunks(chunck_embedding vector(1536), threshold float, count int, min_length int) returns table (id bigint, content text, similarity float) language plpgsql as $$ begin return query select doc_chunks.id, ...
kubectl create -n <your target namespace> -f <path to your yaml file>#Example#kubectl create -n arc -f C:\arc-data-services\postgres.yaml 监视创建状态 PostgreSQL 服务器的创建将需要几分钟才能完成。 可使用以下命令在另一个终端窗口中监视进度: ...