4D's SQL implementation is based on SQL 92.

NO OTHER VENDOR IMPLEMENTATION SUPPORT IS CLAIMED.

When examining SQL syntax from other vendors, be sure the syntax conforms to SQL 92 before using it with 4D. If the syntax is vendor-specific/non-compliant, it will not work in 4D unless you are connecting to that vendor's database.

Please do not file bugs if the problem involves vendor-specific syntax that is not supported by 4D. These are feature requests and should be filed as such.