The CONNECT statement establishes a connection with the DBMS. You establish a connection to send DBMS-specific SQL statements to the DBMS or to retrieve DBMS data. The connection remains in effect ...

While checking SQL syntax itself is somewhat straightforward, [Joe]’s sql-lint tool will also check the semantics of it by looking up the actual database and performing sanity checks on it.

FROM statement using source data that's known to have flaws. Back to the OP - either filter out the bad records in the WHERE clause, or put a CASE statement in the UPDATE list. No need for a cursor.

The EXECUTE statement sends dynamic non-query, DBMS-specific SQL statements to the DBMS and processes those statements. In some SAS/ACCESS interfaces, you can issue an EXECUTE statement directly ...