Update SQL category

Signed-off-by: GitHub Action <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

docs/modules/categories/pages/sql/index.adoc

@@ -0,0 +1,18 @@
+= SQL
+
+SQL is the set-based, high-level declarative (4GL) computer language with which
+all programs and users access data in a relational database.
+
+SQL unifies tasks such as the following in one consistent language:
+
+* Creating, replacing, altering, and dropping objects
+* Inserting, updating, and deleting table rows
+* Querying and analyzing data
+* Controlling access to the database and its objects
+* Guaranteeing database consistency and integrity
+
+SQL became a standard of the American National Standards Institute (ANSI) in 1986
+and of the International Organization for Standardization (ISO) in 1987.
+
+Oracle SQL includes many extensions to the ANSI/ISO standard SQL language,
+and Oracle Database tools and applications provide additional statements.

features/plsql-function-in-sql.adoc

@@ -1,6 +1,6 @@
 = PL/SQL Function in SQL
 :database-version: 12.1.0.1
-:database-category: plsql
+:database-category: sql plsql
 
 This feature enables users to write anonymous PL/SQL functions for the lifetime of a SQL query.