Method convertSelectStmt

internal/engine/dolphin/convert.go:563–587

(n *pcast.SelectStmt)

}

func (c *cc) convertSelectStmt(n *pcast.SelectStmt) *ast.SelectStmt {
	windowClause := &ast.List{Items: make([]ast.Node, 0)}
	orderByClause := c.convertOrderByClause(n.OrderBy)
	if orderByClause != nil {
		windowClause.Items = append(windowClause.Items, orderByClause)
	}

	op, all := c.convertSetOprType(n.AfterSetOperator)
	stmt := &ast.SelectStmt{
		TargetList:   c.convertFieldList(n.Fields),
		FromClause:   c.convertTableRefsClause(n.From),
		GroupClause:  c.convertGroupByClause(n.GroupBy),
		HavingClause: c.convertHavingClause(n.Having),
		WhereClause:  c.convert(n.Where),
		WithClause:   c.convertWithClause(n.With),
		WindowClause: windowClause,
		Op:           op,
		All:          all,
	}
	if n.Limit != nil {
		stmt.LimitCount = c.convert(n.Limit.Count)
		stmt.LimitOffset = c.convert(n.Limit.Offset)
	}
	return stmt
}

func (c *cc) convertSubqueryExpr(n *pcast.SubqueryExpr) ast.Node {
	// Wrap subquery in SubLink to ensure parentheses are added