SQL4015 - From-column &1.&2, to-column &3.&4, join operator &5, join predicate &6

SQL4015
Message Text: From-column &1.&2, to-column &3.&4, join operator &5, join predicate &6
Cause Text: Identifies which join predicate was implemented at the current join position. The replacement text parameters are:
  • &1: The join 'from table' number. The table number refers to the relative position of this table in the query.
  • &2: The join 'from column' name. The column within the join from table which comprises the left half of the join column pair. If the column name is *MAP, the column is an expression (derived field).
  • &3: The join 'to table' number. The table number refers to the relative position of this table in the query.
  • &4. The join 'to column' name. The column within the join to column which comprises the right half of the join column pair. If the column name is *MAP, the column is an expression (derived field).
  • &5. The join operator. Possible values are EQ (equal), NE (not equal), GT (greater than), LT (less than), GE (greater than or equal), LE (less than or equal), and CP (cross join or cartesian product).
  • &6. The join predicate number. Identifies the join predicate within this set of join pairs.
Recovery Text: Refer to Join optimization for more information about joins.