c# - OR LIKE sql查询 bool 错误

Question

我正在尝试搜索员工记录，但收到此错误消息:

An expression of non-boolean type specified in a context where a condition is expected, near 'OR'.

这是我正在使用的代码:

sConn = new SqlConnection(sStr);

daEmp2 = new SqlDataAdapter("
SELECT employee.*,
       department.Department
FROM tblEmployee employee
INNER JOIN tblDepartment department ON employee.DeptID=department.DeptID
WHERE Lname OR Fname LIKE '%" + txtName.Text + "%'
", sConn);

dsEmp2 = new DataSet();
daEmp2.Fill(dsEmp2, "tblEmployee");

我的查询有问题吗？

Answer 1

or 连接 SQL 中的 bool 条件——求值为 true 或 false 的条件。

你需要重复条件:

Lname LIKE '%" + txtName.Text + "%'" OR Fname LIKE '%" + txtName.Text + "%'"