In PostgreSQL, the FOR loop is used for iterating over a range of values or a result set. The below figure shows the working flow of the FOR loop in PostgreSQL: Syntax It works similarly to traditional programming language “for” loops; however, its syntax is a little bit different, as...
PostgreSQL for in loop 模板是 FORvarINREVERSE1..10LOOP statement_list END LOOP; REVERSE 不知道什么意思…… 一般用的是 FORvarIN1..10LOOP statement_listENDLOOP; 如果是navicate for+tab出来的模板,需要自己手动定义值,不然是不生效的。 var是一个变量,它刚开始的时候是等于1..10中的1,可以对var进行...
for [循环计数器] in [REVERSE] [下限]..[上限] loop 代码; end loop; 2.例子: CREATE OR REPLACE PROCEDURE PROC_FOR1 (a IN OUT INT) AS BEGIN FOR I IN REVERSE 1 .. a LOOP PRINT I; a:=I-1; END LOOP; END; call proc_for1(5); 结果: 5 4 3 2 1 四、REPEAT语句 1.语法: REP...
sql postgresql for-loop stored-procedures triggers 我正在研究如何在POSTGRESQL中创建触发器和存储过程,我的任务是更新TableAlbum中名为num_long_title_songs的列。 需要计算一个名为songs的表中超过12个字符的歌曲数量,然后更新ALBUM中该列的值。 我已经创建了下一个带有for循环的查询,这正是我想要的: do $$ ...
为Azure Database for PostgreSQL 配置备份 - (灵活服务器) 为Azure Blob 配置保管库备份 在AKS 群集中安装备份扩展 为Azure 文件创建备份策略 为Azure 文件配置保管库备份 启用多用户授权 (MUA) 备份SAP HANA 系统复制数据库 将整个 SAP HANA 系统还原到快照还原点 ...
postgresql loops foreach format 我试图编写一个非常简单的pgsql语句,以循环遍历一个简单的状态缩写数组。 CREATE OR REPLACE FUNCTION my_schema.showState() RETURNS text AS $$ DECLARE my_array text[] := '["az","al", "ak", "ar"]' BEGIN FOREACH state IN my_array LOOP RETURN SELECT format(...
The following illustrates the syntax of the cursor FOR LOOP statement: FOR record IN cursor_name LOOP process_record_statements; END LOOP; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) 1) record The record is the name of the index that the cursor FOR LOOP statement declares im...
适用于: Azure Database for PostgreSQL 灵活服务器 Azure Database for PostgreSQL 为每个服务器都提供了一组可配置的参数。 这些参数可以对应于: PostgreSQL 数据库引擎或实现扩展功能的二进制库定义的参数。 数据库引擎内置参数的一些示例包括 autovacuum_max_workers、DateStyle、client_min_messages、password_...
Bash Until Loop The until statement is very similar in syntax and function to the while statement. The only real difference between the two is that the until statement executes its code block while its conditional expression is false, and the while statement executes its code block while its co...
c# .mdf (database)file connection syntax C# .NET 3.5 - Split a date range into several ranges ? C# & SQL: Data not being saved to Database C# | How to save the inputs entered in a textBox? C# 2008 - Get ASCII code of a character C# 3.0 - Get LoggedIn UserName, ComputerName ...