sql server的isnull函数 ISNULL ( check_expression , replacement_value ) 参数 check_expression是将被检查是否为 NULL的表达式。check_expression 可以是任何类型的。 replacement_value在 check_expression 为 NULL时将返回的表达式。replacement_value 必须与 check_expresssion 具有相同的类型
SELECTD.MGR,COALESCE(MGR,NULL),D.COMM,D.EMPNO,COALESCE(MGR,COMM,88)FROMSCOTT.EMPD; 本文选自《Oracle程序员面试笔试宝典》,作者:李华荣。 About Me:小麦苗 ● 本文作者:小麦苗,只专注于数据库的技术,更注重技术的运用 ● 作者博客地址:http://blog.itpub.net/26736162/abstract/1/ ● 本系列题目来源于...
so the result is FALSE. In the second example, we passed equal values and received TRUE. In the last example, we passed two NULL values and still received TRUE because, as mentioned above, this function treats NULLs as equal. In SQL Server, we can implement the logic of EQUAL_N...
check_slave.pl是用perl写的一个检测脚本,定时在slave机器上执行showslavestatus\G命令,检查Slave_IO_Running、Slave_SQL_Running、Seconds_Behind_Master三个值。Slave_IO_Running和Slave_SQL_Running有一个值为No就自动从LVS的realserver列表去掉,不再对外提供服务,如果这两个值为Yes,检查Seconds_Behind_Master大于设...
问如何在informix索引中使用NVL2函数EN一、内部函数 1、内部合计函数 1）COUNT（*） ...
In addition to supporting the lightweight training solutions provided by PEFT, we also provide a complete Adapters library to support the latest training techniques such as NEFTune, LoRA+, LLaMA-PRO, etc. This adapter library can be used directly in your own custom workflow without our training...
8、SQL SERVER 数据库发布向导 Microsoft SQL Server DatabasePublishing Wizard (微软SQLServer数据库发布向导) 是微软发布的一个开源工具,使用该工具可以帮你将SQLSERVER 数据库导出成一个 SQL脚本,类似 MySQL 的 mysqldump工具。 官方说明:SQLServer数据库发布向导提供了一种将数据库发布到 T-SQL 脚本或者直接发布到...
Orcale的NVL、NVL2函数和SQL Server的ISNULL函数 Orcal 的 nvl函数 NVL(Expr1,Expr2)如果Expr1为NULL,返回Expr2的值,否则返回Expr1的值,Expr1,Expr2都为NULL则返回NULL NVL2(Expr1,Expr2,Expr3)如果Expr1为NULL,返回Expr2的值,否则返回Expr3的值
2024.02.01: Support --merge_lora parameter in AnimateDiff training. 2024.01.30: Support internlm-xcomposer2-7b-chat. 🔥2024.01.30: Support ZeRO-3, simply specify --deepspeed default-zero3. 2024.01.29: Support internlm2-math series: internlm2-math-7b, internlm2-math-7b-chat, internlm2...
In addition to supporting the lightweight training solutions provided by PEFT, we also provide a complete Adapters library to support the latest training techniques such as NEFTune, LoRA+, LLaMA-PRO, etc. This adapter library can be used directly in your own custom workflow without our training...