17.18. Prepared positional modification operator

  <preparable dynamic update statement: positioned> :: =
    UPDATE [<table name>]
    SET <set clause> [{<comma> <set clause>} ...]
    WHERE CURRENT OF <cursor name> 

Comment:

See previous item.

If you carefully compare the dynamic SQL tools of the Oracle V.6 DBMS and the SQL / 92 standard, you can see that Oracle practically embeds in the standard, with the exception of minor syntax differences and (more importantly) different styles of working with descriptors. It seems that approximately the same situation occurs in other DBMS that support dynamic SQL.