Question

我正在尝试在Teradata查询中的查询片段下面运行

router.post('/login', function(req, res) {

    connection.query('SELECT user_id FROM users WHERE user_email = ? AND user_password = ?', [req.body.login, req.body.password], function(err, results) {
        if (err) throw err;

        if (results[0]) {

            userId = results[0].user_id;

            getUser("username", userId, function(err, data) {
                if (err) {
                    console.log("ERROR : ", err);
                } else {
                    email = data.value1;
                    username = data.value2;
                  
                    getPosts("posts", 1, function(err, data) {
                      if (err) {
                          console.log("ERROR : ", err);
                      } else {
                          postName = data.value1;
                          postText = data.value2;

                        res.render('logged_in', {
                          email: email,
                          username: username,
                          pstname: postName,
                          psttxt: postText
                       }
                    });

                }

            });


        } else {
            res.render('index', {
                validation: "failed"

            });

        }

    });

});

我尝试了另一个但类似的

WHERE  COALESCE(CAST (EXPC_DLVR_TS as date),'2020-12-31') >'2016-11-18'

对于我遇到错误的两个查询 -

WHERE CAST(COALESCE(EXPC_DLVR_TS,'12/31/2020 17:00:00.000000-08:00') as date) >'2016-11-18'

Answer 1

你需要告诉Teradata＆＃39; 2020-12-31＆＃39;是一个约会，否则它认为它是一个字符串。只需按DATE开头即可。在约会时总是这样做是个好习惯。

where COALESCE(CAST (EXPC_DLVR_TS as date),date '2020-12-31') > date '2016-11-18'

THEN / ELSE表达式中的数据类型不匹配

1 个答案: