I am not quite I am sure about why that would be a good idea. SQL and PL/SQL are quite different.
"PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's proprietary procedural extension to the SQL database language, used in the Oracle database. Some other SQL database management systems offer similar extensions to the SQL language. PL/SQL's syntax strongly resembles that of Ada, and just like Ada compilers of the 1980s the PL/SQL runtime system uses Diana as intermediate representation.
The key strength of PL/SQL is its tight integration with the Oracle database."