I am new to Talend and I have a very simple task of bringing in a Salesforce "contact" table into the database. To begin with testing, I only have the tSalesforceInput and tLogRow components (as per screenshot - left activated sub job) and I am only selecting "accountId" in the SOQL.
"SELECT AccountId
FROM contact
WHERE AccountId != null
LIMIT 1000"
This returns a log output of 1000 AccountIds fine (as in screenshot - below).
I then introduced the tConvertType component (as per screenshot - right activated sub job) and I lost all output (log output returns 1000 rows with null values). I did not introduce any datatype casting in the convert component yet.
Would really appreciate some inputs on what could be happening. Thanks!

