Question

当我使用下面的代码时，我得到了所需的输出：

mQuery = "Select FileName, Filetype from CredoReports where "
mQuery = mQuery & " FileName = '" & mSearchTag & "'"
mQuery = mQuery & " or FileName like '" & mSearchTag & "%'"
mQuery = mQuery & " order by FileName ASC"

SQL DB Trace收到的查询是

SELECT "FileName" ,"FileType"  FROM "dbo"."CredoReports" WHERE ((("FileName" = 'L-R5' )  OR ("FileName" LIKE 'L-R5%' ) ) ORDER BY "dbo"."CredoReports"."FileName"

当我使用下面的代码时，我没有得到任何输出。

mQuery = "Select FileName, Filetype from CredoReports where "
mQuery = mQuery & " FileName = '" & mSearchTag & "'"
mQuery = mQuery & " or FileName like '" & mSearchTag & "[^0-9]%'"
mQuery = mQuery & " order by FileName ASC"

SQL Trace收到的查询是

SELECT "FileName" ,"FileType"  FROM "dbo"."CredoReports"

当我使用[^0-9]时，SQL DB跟踪中缺少WHERE子句。

额外信息：Set oRecordSet = CurrentDb.OpenRecordset(mQuery)

Answer 1

您使用的数据库是什么？唯一一个将[^0-9]视为含义的数据库＆＃34;没有数字＆＃34; for like是SQL Server（和Sybase）。

在MySQL中，您将使用regexp：

mQuery = mQuery & " or FileName regexp '^" & mSearchTag & "[^0-9].*$'"

来自VB的SQL查询

1 个答案: