Array as sql request parameter - node.js

Question

I handle my SQL queries like this (which works):
const sql = require("mssql/msnodesqlv8");
const conn = new sql.ConnectionPool({
database: "MyDatabase",
server: "localhost\\SQLEXPRESS",
driver: "msnodesqlv8",
options: {
trustedConnection: true
}
});
async function runSQLQuery(insertReq, query) {
try {
await conn.connect();
var result = await insertReq.query(query);
await conn.close();
return result;
} catch (ex) {
console.log(ex);
return undefined;
} finally {
if (conn.connected)
conn.close();
}
}
and create the querys like this (which also works):
exports.getClientByID = async function (ID) {
var insertReq = conn.request();
insertReq.input("ID", sql.UniqueIdentifier, ID);
const request = await runSQLQuery(insertReq, `SELECT TOP (1) * FROM ${ClientTabel} WHERE ID = #ID`);
return request.recordset[0]
};
But now I want to add an Array as Parameter like this (and this doesn't work):
exports.getUsersWithProperty = async function (properties) {
var insertReq = conn.request();
insertReq.input("properties", sql.NVarChar, properties);
const request = await runSQLQuery(insertReq, `SELECT * FROM ${ClientTabel} WHERE Property IN #properties`);
return request.recordset;
};
But with this I only get a
Request Error" Wrong Syntax near "#properties".
I guess the type sql.NVarChar is wrong but I don't know what the right type is. Whats the solution for this?

Answer 1

OK, for a start, you need to add brackets around the values.
An IN clause is like this:
WHERE somecolumn IN ('value1','value2','value3')
you'll also have to make sure that after your #properties string replacement is done, you end up with a statement that looks like the clause above, with the quotes and commas in the right places.
Alternately, if #properties is a string like Value1,Value2,Value3 and so on, you could pass it to a T-SQL table-valued function that returns a table like this:
WHERE somecolumn IN dbo.ExtractStringList(#StringList)