我的SQL代码有 if (Directory.Exists(FileNamePath))
{
List<string> dbFileNames = null;
string qry = "select FileName from MembersFiles where fk_MemberId='" + GlobalValues.Member_PkId + "' and Document_Type='" + doc + "'";
using (SqlDataAdapter da = new SqlDataAdapter(qry, con))
{
con.Open();
DataTable dt = new DataTable();
da.Fill(dt);
dbFileName = dt.Rows.OfType<DataRow>()
.Select(r => r[0].ToString()).ToList();
con.Close();
}
string[] fileNames1 = dbFileNames.Select(f =>
Path.Combine(FileNamePath, f)).ToArray();
}
和BETWEEN条件。
OR
上面的代码抛出错误，
SELECT * FROM tbl_order o INNER JOIN tbl_contacts c ON c.contacts_id = o.contacts_id LEFT JOIN tbl_title t ON t.title_id = c.title_id LEFT JOIN tbl_assign a ON (a.order_id = o.order_id AND a.order_no_first = o.order_no_first) WHERE o.order_status = 1 AND o.order_date BETWEEN DATE(DATE_ADD(o.order_date, INTERVAL -2 DAY) AND CURDATE()) OR o.order_print = 1 GROUP BY o.order_id
如果使用#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'OR o.order_print = 1 GROUP BY o.order_id LIMIT 0, 25' at line 1代替AND，则代码可以正常运行。但我需要OR而不是OR
如何解决此错误。我哪里做错了？
答案 0 :(得分：4)
你混淆了括号：
o.order_date BETWEEN DATE(DATE_ADD(o.order_date, INTERVAL -2 DAY) AND CURDATE())
应该是：
o.order_date BETWEEN DATE(DATE_ADD(o.order_date, INTERVAL -2 DAY)) AND CURDATE()
BETWEEN需要两个参数，并且两个参数周围不能有括号。
像这样：
o.order_date BETWEEN X AND Y
不喜欢这样：
o.order_date BETWEEN (X AND Y)