Unable to insert single quotes in SQL Server 2016 - node.js

Question

I am trying to insert data in my SQL Server and I am using loopback framework in the backend.
But at the time of inserting a string with single quotes, I get an error
RequestError: Unclosed quotation mark after the character string ',8272)
SELECT id AS insertId from #insertedIds
and the string which I am trying to insert is like this
An open-ended equity fund investing in stocks which are currently undervalued to their future earning potential and carry medium risk profile to provide 'Capital Appreciation',
I tried to resolve this issue by replacing single quotes but afterward, when I am selecting data from the database again this error is happening.
Code is something like this
let mutualFundRecord = {
fundObjective: An open-ended equity fund investing in stocks which are currently undervalued to their future earning potential and carry medium risk profile to provide 'Capital Appreciation'
}
function updateRecordData(mutualFundRecord, callback) {
const promise = new Promise(function (resolve, reject) {
let promiseP1;
if (!mutualFundRecord.instrument || !mutualFundRecord.instrument.id) {
promiseP1 = app.models.Instrument.create(mutualFundRecord)
.then(function (newlyCreatedInstrument) {
mutualFundRecord.mutualFundDetails.instrumentId = newlyCreatedInstrument.id;
return app.models.MutualFundDetails.create(mutualFundRecord.mutualFundDetails);
});
}
}

Answer 1

If you try to assign the string with a single quote(s) in it to the variable, you would get the same error as you mentioned in your question:
declare #text nvarchar(100) = 'That's all folks'
Error: Unclosed quotation mark after the character string ''.
What you need to do is to replace each single quote character in the string with two single quote characters - that's called "escaping" the character.
Following code is a small demo and it will show you that although in the code you see two quote character, only one quote will be written into the database:
declare #text nvarchar(100) = 'That''s all folks'
select #text as Txt
into #t
select Txt from #t
That's all folks