Question

我之前使用的是SQL Server 2014。当我尝试执行以下查询

时

EXECUTE msdb.dbo.sp_send_dbmail 
            @profile_name = "Mail" 
            ,@recipients = "rkont@xxx.gr" 
            ,@from_address = "xxx.eye@gmail.com"
            ,@execute_query_database = "EYE" 
            ,@query = "SELECT TOP (100) DateTime, VariableID, VariableName, 
            VariableValue_NumValue as VariableValue, VariableLabel as VariableLabel, SiteID, SiteName,
             DeviceName from dbo.v_AggregatedReport where ClientID = 1 and SiteID in 
             (select SiteID from dbo.v_AccessList where UserID = 16) and DateTime is not null and 
             VariableValue_NumValue is not null and DateTime
              between Web Aug 16 2017 00:00:00 GMT+0300 (GTB Daylight Time) and
              Sat Sep 16 2017 23:59:59 GMT+0300 (GTB Daylight Time) AND SiteID in (39) and 
              VariableName in (\'Total Active Energy\')"
            ,@subject = "Aggregated-Reports eye.v2" 
            ,@body= "Aggregated Reports about a month"
            ,@attach_query_result_as_file = 1 
            ,@query_attachment_filename = "Aggregated-Reports.csv" 
            ,@query_result_separator = "    "
            ,@query_result_no_padding= 1 
            ,@exclude_query_output =1
            ,@append_query_error = 0 
            ,@query_result_header =1;

但是我收到了这个错误：

标有以＆＃39; SELECT TOP（100）DateTime，VariableID，VariableName，VariableValue_NumValue作为VariableValue，VariableLabel作为VariableLab＆＃39;太长。最大长度为128

我搜索了很多，但找不到解决方案。

Answer 1

正如HoneyBadger所说，你使用双引号，你应该使用单引号。您还错误地转发了@query中的单引号，没有限定DateTime列名称，因为它是SQL关键字，也没有正确指定日期。

我没有更改SiteID列周围的重叠条件，因为我不知道您是否需要将其与子查询中的结果匹配，或者只是等于39？

您似乎来自另一种开发语言，并且正在尝试将相同的原则应用于您的SQL代码。我建议做一些关于SQL语法和最佳实践的研究：

EXECUTE msdb.dbo.sp_send_dbmail 
            @profile_name = 'Mail' 
            ,@recipients = 'rkont@xxx.gr' 
            ,@from_address = 'xxx.eye@gmail.com'
            ,@execute_query_database = 'EYE' 
            ,@query = 'select top (100) [DateTime]
                                        ,VariableID
                                        ,VariableName
                                        ,VariableValue_NumValue as VariableValue
                                        ,VariableLabel as VariableLabel
                                        ,SiteID
                                        ,SiteName
                                        ,DeviceName
                        from dbo.v_AggregatedReport
                        where ClientID = 1
                            and SiteID in (select SiteID
                                            from dbo.v_AccessList
                                            where UserID = 16
                                            )
                            and SiteID in (39)   -- This criteria clashes with the sub-select above.
                            and VariableValue_NumValue is not null
                            and [DateTime] >= ''20170816''
                            and [DateTime] < ''20170917''  -- Always look for less that the start of the next period.  Time is infinite yet current data types are not.
                            and VariableName in (''Total Active Energy'')
                        '
            ,@subject = 'Aggregated-Reports eye.v2' 
            ,@body= 'Aggregated Reports about a month'
            ,@attach_query_result_as_file = 1 
            ,@query_attachment_filename = 'Aggregated-Reports.csv' 
            ,@query_result_separator = '    '
            ,@query_result_no_padding= 1 
            ,@exclude_query_output =1
            ,@append_query_error = 0 
            ,@query_result_header =1;

SQL Server错误：＆＃34;以....开头的标识符太长。最大长度为128＆＃34;

1 个答案: