)) )     select @type=[type] from sys.objects with(nolock) where name=@ObjectName          case @type     WHEN 'U' THEN         exec('select count(1) as 总行数 from ' + @ObjectName + ' with(nolock)')          exec('select top 100 * from ' + @ObjectName …

f you are not familiar with MySQL stored procedures or want to review it as a refresher, you can follow the MySQL stored procedures tutorial. We will create two stored procedures for the demonstration in this tutorial. The first stored procedure gets…

快下班了,抽点时间总结一下sql 的 case 用法. sql 里的case的作用: 用于计算条件列表的表达式,并返回可能的结果之一.sql 的case 类型于编程语言里的 if-esle if-else 或者 switch,但它不用于控制sql程序的执行流程,而是作为列的逻辑使用. 语法: case [input_expression] when when_expression then result_expression [...n] [else else_result_expression…

Stored routines (procedures and functions) can be particularly useful in certain situations: When multiple client applications are written in different languages or work on different platforms, but need to perform the same database operations. When s…

Reference to: http://www.c-sharpcorner.com/UploadFile/skumaar_mca/good-practices-to-write-the-stored-procedures-in-sql-server/ Use proper indentation for the statements in SQL Server. It will improve the readability. Write the proper comments between…

https://code.tutsplus.com/articles/an-introduction-to-stored-procedures-in-mysql-5--net-17843 MySQL 5 introduced a plethora of new features - stored procedures being one of the most significant. In this tutorial, we will focus on what they are, and h…

https://www.sitepoint.com/cursors-mysql-stored-procedures/ After my previous article on Stored Procedures was published on SitePoint, I received quite a number of comments. One of them suggested further elaboration on CURSOR, an important feature in…

Summary: this tutorial shows you how to use MySQL handler to handle exceptions or errors encountered in stored procedures. When an error occurs inside a stored procedure, it is important to handle it appropriately, such as continuing or exiting the c…

本文转自:http://www.telerik.com/help/openaccess-orm/openaccess-tasks-oracle-execute-sp-result-set.html In this topic you will learn how to execute Oracle stored procedures that return SYS_REFCURSOR as out parameters. With the REF_CURSOR you can return a…

SQL进阶一整个是根据我看了pdf版本的整理以及自己的见解整理.后期也方便我自己查看和复习. CASE 表达式 CASE 表达式是从 SQL-92 标准开始被引入的.可能因为它是相对较新的技术,所以尽管使用起来非常便利,但其真正的价值却并不怎么为人所知.很多人不用它,或者用它的简略版函数,例如 DECODE(Oracle).IF (MySQL)等.然而,正如 Joe Celko 所说,CASE表达式也许是 SQL-92 标准里加入的最有用的特性.如果能用好它,那么 SQL 能解决的问题就会更广泛…