SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 6) Function argMin (children 1) ExpressionList (children 2) Identifier a Identifier b Function argMin (children 1) ExpressionList (children 2) Identifier a Identifier c Function argMin (children 1) ExpressionList (children 2) Identifier b Identifier a Function argMin (children 1) ExpressionList (children 2) Identifier b Identifier c Function argMin (children 1) ExpressionList (children 2) Identifier c Identifier a Function argMin (children 1) ExpressionList (children 2) Identifier c Identifier b TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier decimal