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Ms access 神秘有从句_Ms Access - Fatal编程技术网
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Ms access 神秘有从句

ms-access

Ms access 神秘有从句,ms-access,Ms Access,有人能解释一下Access数据库中的HAVING子句吗？使用所有“0”进行格式化时如何返回空格字符串 HAVING Format([PerNr],'0000000') <> ' ' 具有格式（[PerNr]，'0000000'）” 如果字段值设置为空格，则可能 VBA： Dim x As String x = " " MsgBox "x = " & Format(x, "0000000") & " : Len(x) = " & Len

有人能解释一下Access数据库中的HAVING子句吗？使用所有“0”进行格式化时如何返回空格字符串

HAVING Format([PerNr],'0000000') <> '       '

具有格式（[PerNr]，'0000000'）”
如果字段值设置为空格，则可能

VBA：

Dim x As String
x = "       "
MsgBox "x = " & Format(x, "0000000") & " : Len(x) = " & Len(Format(x, "0000000"))