文件名称:sql
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动态sql语句基本语法
1 :普通SQL语句可以用Exec执行
eg: Select * from tableName
Exec( select * from tableName )
Exec sp_executesql N select * from tableName -- 请注意字符串前一定要加N
2:字段名，表名，数据库名之类作为变量时，必须用动态SQL
eg:
declare @fname varchar(20)
set @fname = FiledName
Select @fname from tableName -- 错误,不会提示错误，但结果为固定值FiledName,并非所要。-Basic grammar dynamic sql statement one: ordinary SQL statement Exec can be used to implement eg: Select* from tableName Exec (select* from tableName) Exec sp_executesql N select* from tableName Please note that the string must be added before the N 2: field names, table name, database name, such as variables, we must use dynamic SQL eg: declare @ fname varchar (20) set @ fname = FiledName Select @ fname from tableName error will not prompt an error, but the result for the fixed value FiledName, not to be.
1 :普通SQL语句可以用Exec执行
eg: Select * from tableName
Exec( select * from tableName )
Exec sp_executesql N select * from tableName -- 请注意字符串前一定要加N
2:字段名，表名，数据库名之类作为变量时，必须用动态SQL
eg:
declare @fname varchar(20)
set @fname = FiledName
Select @fname from tableName -- 错误,不会提示错误，但结果为固定值FiledName,并非所要。-Basic grammar dynamic sql statement one: ordinary SQL statement Exec can be used to implement eg: Select* from tableName Exec (select* from tableName) Exec sp_executesql N select* from tableName Please note that the string must be added before the N 2: field names, table name, database name, such as variables, we must use dynamic SQL eg: declare @ fname varchar (20) set @ fname = FiledName Select @ fname from tableName error will not prompt an error, but the result for the fixed value FiledName, not to be.
(系统自动生成,下载前可以参看下载内容)
下载文件列表
830.txt
830_1.txt
@@rowcount.txt
BOOTEX.LOG
case when.txt
CASE的用法.txt
charindex.txt
COALESCE.txt
convert cast.txt
cube.txt
datediff.txt
isnull.txt
isnumric.txt
not exists用法实例.txt
patindex的用法.txt
rename存储过程.txt
replace.txt
rowcount.txt
rowcount精华.txt
stuff.txt
substring和rtrim.txt
unionall.txt
交叉连接查询corss.txt
公交线路问题.txt
分割字符串.txt
分布式查询.txt
分组排列进行更新.txt
别名.txt
动态SQL语句.txt
动态语句.txt
区分大小写.txt
去掉重复的列名.txt
取n到m条记录.txt
合并字符串.txt
多列的行转列.sql
多行补充.sql
多表对多表进行统计.txt
大小写转换.txt
子查寻和内联查寻.txt
学生名次.txt
嵌套游标的使用.txt
拷贝表格.txt
排序.txt
断开并更改数据库名称.txt
新建 文本文档 (6).txt
新建 文本文档.txt
有关NULL.txt
有关树的运用和存储过程.txt
有关连接的查询语句.txt
末公开的存储过程.txt
极品分组排列进行行转列例题.txt
查询 时间1.txt
查询替换字符串.sql
模糊查寻.txt
类似于树查询.txt
练习.txt
获得数据库中表字段的名字.txt
行转列附加.txt
连接字段输出.txt
遍历数据库.txt
830_1.txt
@@rowcount.txt
BOOTEX.LOG
case when.txt
CASE的用法.txt
charindex.txt
COALESCE.txt
convert cast.txt
cube.txt
datediff.txt
isnull.txt
isnumric.txt
not exists用法实例.txt
patindex的用法.txt
rename存储过程.txt
replace.txt
rowcount.txt
rowcount精华.txt
stuff.txt
substring和rtrim.txt
unionall.txt
交叉连接查询corss.txt
公交线路问题.txt
分割字符串.txt
分布式查询.txt
分组排列进行更新.txt
别名.txt
动态SQL语句.txt
动态语句.txt
区分大小写.txt
去掉重复的列名.txt
取n到m条记录.txt
合并字符串.txt
多列的行转列.sql
多行补充.sql
多表对多表进行统计.txt
大小写转换.txt
子查寻和内联查寻.txt
学生名次.txt
嵌套游标的使用.txt
拷贝表格.txt
排序.txt
断开并更改数据库名称.txt
新建 文本文档 (6).txt
新建 文本文档.txt
有关NULL.txt
有关树的运用和存储过程.txt
有关连接的查询语句.txt
末公开的存储过程.txt
极品分组排列进行行转列例题.txt
查询 时间1.txt
查询替换字符串.sql
模糊查寻.txt
类似于树查询.txt
练习.txt
获得数据库中表字段的名字.txt
行转列附加.txt
连接字段输出.txt
遍历数据库.txt