Question

我试图找出如何通过一个表单将数据通过一个表单插入不同的表（多对多关系）来进行mySQL查询。我的表格如下 -

https://i.stack.imgur.com/1xTkd.jpg

我真的很难找到一个mySQL语句加入Pokemon＆amp;用于在特定位置创建新口袋妖怪的位置表。有任何想法吗？

    router.post('/', function(req, res){
            var mysql = req.app.get('mysql');
            var sql = "INSERT INTO pokemon (pokemonname, evolutionlevel) VALUES(?,?)";
            var sql2 = "INSERT INTO location (locationname) VALUES(?, ?)";
            var inserts = [req.body.pokemonname, req.body.evolutionlevel, req.body.locationname];
            sql = mysql.pool.query(sql, sql2, inserts, function(error, results, fields){
                    if(error){
                            res.write(JSON.stringify(error));
                                    res.end();
                    } else{
                            res.redirect('/location');
                    }
            });
    });

Answer 1

我不明白你为什么要加入表格来插入。你可以用两个不同的语句来完成，如下所示

router.post('/', function(req, res){
    var mysql = req.app.get('mysql');
    var sql = "INSERT INTO pokemon (pokemonname, evolutionlevel) VALUES(?,?)";
    var sql2 = "INSERT INTO location (locationname) VALUES(?, ?)";
    var insert1 = [req.body.pokemonname, req.body.evolutionlevel];
    var insert2 = [req.body.locationname];
    var first_sql = mysql.pool.query(sql, insert1, function(error, results, fields){
        if(error){
                res.write(JSON.stringify(error));
                        res.end();
        } else {
            var second_sql = mysql.pool.query(sql2, insert2, function(error, results, fields){
                if(error){
                    res.write(JSON.stringify(error));
                    res.end();
                }
            });
            res.redirect('/location');
        }
    });
});

插入多对多表 - 节点JS MySQL

1 个答案: