Pass array in Mysql query with nodejs

Question

I have a simple query that I want to pass an array inside which has 5 items. I am using the mysql module so I know it can be done but am not doing the synatx right and therefore getting a syntax error.

Below is the query:

`UPDATE table1 SET table1.col=0 WHERE (table1.col2) IN = (?) AND table1.id=(SELECT ...);`,[arr]

//arr = [1,2,3,4,5];

I have tried:

`UPDATE table1 SET table1.col=0 WHERE (table1.col2) IN = (?,?,?,?,?) AND table1.id=(SELECT ...);`,[arr]`

but I still get a syntax error.

user_5291952 · Answer

In my case, array inside of array is needed to get this working. Just array variable as parameter passed only first number to sql.

Here is an example: (Notice ids inside of array as the second parameter)

var sql = "SELECT * FROM table WHERE ID IN (?)";
var ids = [1,2,3];

pool.query(sql, [ids], function (err, result, fields) {

    if(err) {
        console.log(err);
    }
    else {
        console.log(result);
    }
}

Bill_Karwin_20860 · Answer

The syntax of the IN() predicate does not use =.

WHERE (table1.col2) IN = (?,?,?,?,?)

should be

WHERE table1.col2 IN (?,?,?,?,?)

Tip: you can (and should) check syntax yourself in the documentation, so you can get answers more easily than posting to Stack Overflow.

https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_in

Pass array in Mysql query with nodejs

3 Answers