In PostgreSQL, the DROP and DROP IF EXISTS statements are used to delete any existing database object. We can drop a database, table, column, function, any extension, etc. in Postgres by using the DROP or DROP IF EXISTS statements. These statements do the same job of dropping an object ...
DROP FUNCTIONremoves the definition of an existing function. To execute this command you must be a superuser or the owner of the function. All input (IN,IN OUT) argument data types to the function must be specified if this is an overloaded function. (This requirement is not compatible with...
The insert_actor() uses the split_part() function to split the full name into first name and last name before inserting them into the actor table. create or replace procedure insert_actor( full_name varchar ) language plpgsql as $$ declare fname varchar; lname varchar; begin -- split ...
If the return type of a function changes,CREATE OR REPLACE FUNCTIONwill fail withERROR: cannot change return type of existing function. To make function setup more foolproof, this PR updates the documentation to instead useDROP FUNCTION IF EXISTS. Note that I've only updatedget_column_statsandg...
execute 'drop table if exists ' || quote_ident(r.tablename) || ' cascade';6 end loop;7 end $$;This query works by listing out all the tables in the given schema and then executing a drop table for each (hence the for... loop).You...
DROP FUNCTION IF EXISTS drop_chunks(INTERVAL, NAME, NAME, BOOLEAN); DROP FUNCTION IF EXISTS drop_chunks(ANYELEMENT, NAME, NAME, BOOLEAN); DROP FUNCTION IF EXISTS _timescaledb_internal.drop_chunks_impl(BIGINT, NAME, NAME, BOOLEAN, BOOLEAN); DROP FUNCTION IF EXISTS _timescaledb_internal.drop...
DROPEVENT 功能描述 删除一个定时任务。 注意事项 定时任务相关操作只有sql_compatibility = 'B'时支持。 语法格式DROPEVENT [IF EXISTS] event_name 参数说明 IF EXISTS 如果定时任务不存在,会输出一个NOTICE。 来自:帮助中心 查看更多 → DROP FUNCTION
当你已经连接到目标数据库时,它不能被执行(连接到postgres或者任何其他数据库来发出这个命令)。 另外,如果其他任何人已经连接到目标数据库,这个命令将会失败,除非您使用以下所述的FORCE选项。 说明 DROP DATABASE不能被撤销。请谨慎使用。 语法 DROP DATABASE [ IF EXISTS ] name [ [ WITH ] ( option [, ....
不能对系统默认安装的四个数据库(POSTGRES、TEMPLATE0、TEMPLATE1和T 来自:帮助中心 查看更多 → DROP FUNCTION DROP FUNCTION 语法 DROP FUNCTION [ IF EXISTS ] qualified_function_name 描述 删除与给定函数名称匹配的现有函数。如果不存在匹配的函数,可选的“IF EXISTS”子句会导致“NOT_FOUND”错误被抑制...
If possible, Postgres closes the user's session and deletes the database forcefully. Note:TheWITH (FORCE)option is available in PostgreSQL version 13 and higher. dropdb Utility Thedropdbshell utility is a wrapper for theDROP DATABASEcommand. Although the utility is identical in effect,dropdballow...