相关疑难解决方法(0)

在我目前的项目中,我正在使用SQL CE.由于它不支持存储过程,我必须在存储库中编写sql查询.

选项1:

StringBuilder query = new StringBuilder();
query.Append("SELECT");
query.Append("    c.CUSTOMER_ID,");
query.Append("    COALESCE (c.FIRST_NAME, '') + ' ' + COALESCE (c.LAST_NAME, '') AS FULL_NAME");
query.Append("    ct.NAME as CUSTOMER_TYPE");
query.Append("FROM ");
query.Append("    CT_CUSTOMER_TYPE AS ct INNER JOIN CUSTOMER AS c ON ct.CUSTOMER_TYPE_ID = c.CUSTOMER_TYPE_ID");

选项2:

string query = "SELECT c.CUSTOMER_ID, COALESCE (c.FIRST_NAME, '') + ' ' + COALESCE (c.LAST_NAME, '') AS FULL_NAME, ct.NAME as CUSTOMER_TYPE FROM CT_CUSTOMER_TYPE AS ct INNER JOIN CUSTOMER AS c ON ct.CUSTOMER_TYPE_ID = c.CUSTOMER_TYPE_ID";

选项1似乎更具可读性,特别是当我有10个以上的表连接时,但选项2更快.
我应该接受哪个选项,在这种情况下最佳做法是什么？

我有一个字符串,其中包含表单中的标签< tag >.有没有一种简单的方法让我以编程方式用特殊的ascii字符替换这些标签的实例？例如,用"< tab >"ascii equivelent 替换标签'/t'？