user doc: Emphasize that Query field accepts standard SQL only
@@ -24,7 +24,7 @@ SQL statement that you specify.
* *Periodic stored procedure invocation* obtains data by periodically invoking
the stored procedure that you specify or select.
. If you selected *Periodic SQL invocation*, in the *Query* field,
-enter a SQL `SELECT` statement or some other SQL statement that
+enter a SQL `SELECT` statement or some other standard SQL statement that
obtains one or more records. For
example: `*SELECT * from my_db_table*`.
The database table that contains the data you want must already exist.
@@ -41,6 +41,13 @@ the connection invokes the specified statement or stored procedure every
five minutes.
. Click *Next*.
+.Limitations on the use of SQL extensions
+SQL statements that you enter in the *Query* field must be standard SQL constructs.
+Fuse Online does not recognize or parse SQL extensions such as Procedural Language/PostgreSQL (PL/pgSQL)
+or Oracle Procedural Language Extensions to SQL (PL/SQL).
+However, you can use SQL extensions within stored procedures.
+
+
.Result
{prodname} tries to validate the connection, which includes
checking that a specified SQL statement is syntactically correct and
