#SQL For SFMC0 debatiendo

Hello @Anirudh Venugopal Warrier,

Primary key violations occur when an attempt is made to insert a record with a primary key value that already exists in the table. Here are a few ways to resolve primary key violations in SQL queries:

1. Check the input data: Ensure that the input data is correct and does not contain any duplicate values. If the input data is coming from a file or another database, verify that it is correct and does not contain any errors.
2. Use a MERGE statement: Use a MERGE statement to update existing records and insert new records. A MERGE statement can be used to perform both INSERT and UPDATE operations in a single statement.
3. Use a subquery: Use a subquery to check if the record already exists before inserting it. The subquery can check for the existence of the primary key value in the table and return a boolean value that can be used to determine whether to insert the record or not.
4. Use an UPSERT statement: An UPSERT statement is a combination of an INSERT and an UPDATE statement. It will try to insert a record, and if it already exists, it will update the existing record.
5. Use a transaction: Wrap the INSERT statement in a transaction to ensure that the primary key violation is caught and handled correctly. This will ensure that the entire operation is either committed or rolled back in case of an error.
6. Remove the primary key constraint: If you do not need the primary key constraint, you can remove it from the table. However, this is not recommended as it can lead to data inconsistencies and make it difficult to maintain the integrity of the data.

By using one of these methods, you should be able to resolve the primary key violation issue in your SQL query. 

If you want to know the records of the remaining paths, update a Marketing Cloud contact record in Journey Builder using the "update contact" activity. And you can query the DE.