Question

我有一个sql字符串检索三列的数据，我不想在这些列之间有任何空格。我想删除列之间的空格。

 string stringSql = " SELECT distinct  " +
                   "'" + comboBox6.Text + "' as RecordType" +
                 " , left([Claimant Name] +' ',29) " +
                " , left([Claimant Address1] +' ',29)  " +
                " , left([Claimant Address2] +' ',29) as ClaimantAddress2 " +

我的客户要求就像

**1xyz1dundas**

MY输出就像

**1 xyz 1 dundas**

Answer 1

使用替换

stringSql .Replace("  ", string.empty);

在sql中

 SELECT REPLACE(stringSql, ' ', '')

Answer 2

如果你想删除空白（不仅仅是普通空格 ' '，而是说 tabluations {{1你可以使用LINQ：

'\t'

Answer 3

在SQL-Server上：

SELECT REPLACE(yourField, ' ', '')

Answer 4

MSSQL Server：

RTRIM(LTRIM(a))

Oracle，MySQL，SQL Server 2012：TRIM功能

string stringSql = " SELECT distinct  " +
                   "'" + comboBox6.Text + "' as RecordType" +
                 " ,  RTRIM(LTRIM(left([Claimant Name] +' ',29))) " +
                " ,  RTRIM(LTRIM(left([Claimant Address1] +' ',29)))  " +
                " ,  RTRIM(LTRIM(left([Claimant Address2] +' ',29))) as ClaimantAddress2 "

c＃从字符串中删除所有空格

4 个答案: