+- Input[@CanonicalImage = null, @ExcludedLinesCount = 0, @ExcludedRangesCount = 0]
   +- Global[@CanonicalImage = null]
      +- Block[@CanonicalImage = null]
         +- Statement[@CanonicalImage = null]
            +- UnlabelledStatement[@CanonicalImage = null]
               +- SelectIntoStatement[@All = false, @CanonicalImage = null, @Distinct = false, @Unique = false]
                  +- SelectList[@CanonicalImage = null]
                  |  +- SqlExpression[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                  |     +- PrimaryPrefix[@CanonicalImage = "LAST_NAME", @Image = "last_name", @SelfModifier = false]
                  |        +- SimpleExpression[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                  |           +- Column[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                  |              +- ID[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                  +- IntoClause[@CanonicalImage = null]
                  |  +- VariableName[@CanonicalImage = "REC", @Image = "rec"]
                  |     +- ID[@CanonicalImage = "REC", @Image = "rec"]
                  +- FromClause[@CanonicalImage = null]
                  |  +- TableReference[@CanonicalImage = null]
                  |     +- TableName[@CanonicalImage = "EMPLOYEES", @Image = "employees"]
                  |        +- ID[@CanonicalImage = "EMPLOYEES", @Image = "employees"]
                  +- WhereClause[@CanonicalImage = null]
                  |  +- Condition[@CanonicalImage = null]
                  |     +- CompoundCondition[@CanonicalImage = null, @Type = null]
                  |        +- IsNullCondition[@CanonicalImage = "COMMISSION_PCT IS NULL", @Image = "commission_pct IS NULL"]
                  |           +- PrimaryPrefix[@CanonicalImage = "COMMISSION_PCT", @Image = "commission_pct", @SelfModifier = false]
                  |              +- SimpleExpression[@CanonicalImage = "COMMISSION_PCT", @Image = "commission_pct"]
                  |                 +- Column[@CanonicalImage = "COMMISSION_PCT", @Image = "commission_pct"]
                  |                    +- ID[@CanonicalImage = "COMMISSION_PCT", @Image = "commission_pct"]
                  +- OrderByClause[@CanonicalImage = null]
                     +- SqlExpression[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                        +- PrimaryPrefix[@CanonicalImage = "LAST_NAME", @Image = "last_name", @SelfModifier = false]
                           +- SimpleExpression[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                              +- Column[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
                                 +- ID[@CanonicalImage = "LAST_NAME", @Image = "last_name"]
