[begin_label:]REPEAT--循环体--可以在循环体中执行SQL语句UNTILconditionENDREPEAT[end_label] 示例 代码语言:javascript 代码运行次数:0 运行 AI代码解释 DELIMITER//CREATEPROCEDURERepeatLoopExample()BEGINDECLAREcounterINTDEFAULT0;REPEATSETcounter=counter+1;--输出当前计数器值SELECTcounter;--当计数器达到10时退...
我们常用的操作数据库语言SQL语句在执行的时候需要要先编译,然后执行,而存储过程(Stored Procedure)是一组为了完成特定功能的SQL语句集,经编译后存储在数据库中,用户通过指定存储过程的名字并给定参数(如果该存储过程带有参数)来调用执行它。 一个存储过程是一个可编程的函数,它在数据库中创建并保存。它可以有SQL语句...
After reading this article you will understand the basics of using the WHILE statement to write a loop within a stored procedure. All the examples for this lesson are based on Microsoft SQL Server Management Studio and the sample databases AdventureWorks and WideWorldImporters. Start learning SQL t...
存储javasql数据库云数据库 SQL Server 存储过程(Stored Procedure)是在大型数据库系统中,一组为了完成特定功能的SQL 语句集,它存储在数据库中,一次编译后永久有效,用户通过指定存储过程的名字并给出参数(如果该存储过程带有参数)来执行它。存储过程是数据库中的一个重要对象。 布禾 2021/04/09 1.3K0 MySQL数据库...
I often use loops with dynamic sql to get fill rates in tables over a period of time. I started messing around this afternoon and am struggling a bit getting the following loop to execute. I did finally see on my last google search that a loop must be in a procedure so that seems ...
如果在处理IO密集型操作时,可能需要调整循环结构以优化性能。这儿隐藏了一些高级分析,多次循环体内的SQL语句若不加以优化,可能导致性能问题。 DECLAREdoneINTDEFAULTFALSE;DECLAREcursor_variableCURSORFORSELECTcolumnFROMtableWHEREcondition;DECLARECONTINUEHANDLERFORNOTFOUNDSETdone=TRUE;OPENcursor_variable;my_loop:LOOPFETCH...
Can we use While loop in CTE? can we write DDL command in Stored Procedure? Can wildcards be used on datetime column? can you add colour to a fields output in T-SQL? Can you change the value of yes or no instead of true or false use data type (BIT) ? Can you have a TRY CATC...
Compressing and decompressing files and images to and from an SQL Server Database table COmputer Serial Number Concatenate Strings from two-dimensional array Concatenate Strings In ForEach Loop Concatenate, save, and read file streams Concatenating 2 strings to create URL ConcurrentBag: setting/repla...
Bug #75879 memory consumed quickly while executing loop in procedure Submitted: 12 Feb 2015 17:04Modified: 27 Apr 2015 14:25 Reporter: zhai weixiang (OCA) Email Updates: Status: Closed Impact on me: None Category: MySQL Utilities: Binlog EventsSeverity: S2 (Serious) Version: 5.6,5.7OS:...
IP address 127.0.0.1 is probably listed. It's called the loopback adapter address. Only processes on the same computer can use the IP address to connect. You can also view the SQL Server error log by using a text editor. By default, the error log is located...