-051 identifier-name (sql-type) WAS PREVIOUSLY DECLARED OR REFERENCED

Explanation

The identifier name has already been defined for the indicated type of SQL object.

identifier-name

The name that has already been used.

sql-type

The type of SQL object: TABLE, CURSOR, or STATEMENT.

The definition might have occurred implicitly. For example, identifier-name might have been found in the FROM clause of a SELECT, which causes it to be defined as a table.

A cursor name must be unique within the program or routine.