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[英]How to set a local variable to the result of sql query in a batch file?
[英]Return a scalar query result into a batch file variable
我想执行一个标量数据库查询并将结果返回到批处理文件中的变量中。
如何做到这一点? 我在我们的系统中看到的最接近的示例是如果我返回基于标量查询结果的退出代码。
Z:\SQL2005\90\Tools\Binn\sqlcmd -S servername -dCLASS -E -Q "EXIT(select case run_type when 'Q' then 200 else 100 end from cycle_date where cycle = '1')">NUL
if %errorlevel% == 200 call %SQLSERVER%
QRTLY.BAT
if %errorlevel% == 100 call %SQLSERVER%
MTHLY.BAT
有人可以帮我语法吗?
这是一些 sqlcmd 帮助信息:
-v var = value[ var=value...]
Creates a sqlcmdscripting variable that can be used in a sqlcmd script. Enclose the value in quotation marks if the value contains spaces. You can specify multiple var="values" values. If there are errors in any of the values specified, sqlcmd generates an error message and then exits.
sqlcmd -v MyVar1=something MyVar2="some thing"
sqlcmd -v MyVar1=something -v MyVar2="some thing"
-x disable variable substitution
Causes sqlcmd to ignore scripting variables. This is useful when a script contains many INSERT statements that may contain strings that have the same format as regular variables, such as $(variable_name).
如何将其保存到没有标题的文件中,然后重新读取内容?
sqlcmd -S(local)\SQLExpress -dMyDatabase -Umyuser -Pmypassword -W -h -1 -Q "SELECT Top 1 MyValue FROM MyTable" -o sqlcmdoutput.txt
set /p x= <sqlcmdoutput.txt
del sqlcmdoutput.txt
echo My scalar value is %x%
我在批处理文件中使用它。 它返回 SQL 服务器数据库数据文件的逻辑文件名。 这仅在数据库中有一个数据文件时才有效。
所以结果是环境变量 DATABASEFILENAME 设置为 AdventureWorks_Data。
FOR /F "usebackq tokens=1" %%i IN (`sqlcmd -w200 -h-1 -E -Q"set nocount on; Select df.name From sysdatabases as d Inner Join sysaltfiles as df on d.dbid=df.dbid Where d.name ='$(DatabaseName)' and df.Fileid =1"`) DO set DATABASEFILENAME=%%i
你看过sqlcmd吗?
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