将输入传递给sqlite IN运算符（Javascript，Cordova）

Question

I am using sqlite in cordova environment for iPad. While querying a select statement with single input, I do something like this

tx.executeSql("select * from activityData_table where id=? ;", [outage.outageId], function(tx, res)

But what if I want to select using a IN operator as given below.

select * from activityData_table where id in (val1,val2,val2)

How will I form the query and pass inputs to it. Will a array of values suffice or do we need to manually do any concat operations?

I couldn't find any documentations for using sqlite with JS. If any one could suggest a documentation or a tutorial site for reference will be of great help.

Answer 1

You could get the count of the values and then generate the statement like this (pseudo code):

var values = [1,2,3,4];

var count = values.length;

var sql = 'select * from activityData_table where id in (';

for (var i = 0; i < count; i++) {
    if(i != (count - 1)) {
        sql += '?,';
    }
    else {
        sql += '?)';
    }
}

tx.executeSql(sql,values);