Method parseWindowClause

parser/parser_query.go:889–932

(pos Pos)

}

func (p *Parser) parseWindowClause(pos Pos) (*WindowClause, error) {
	if err := p.expectKeyword(KeywordWindow); err != nil {
		return nil, err
	}

	windows := make([]*WindowDefinition, 0, 1)
	for {
		windowName, err := p.parseIdent()
		if err != nil {
			return nil, err
		}

		asPos := p.Pos()
		if err := p.expectKeyword(KeywordAs); err != nil {
			return nil, err
		}

		condition, err := p.parseWindowCondition(p.Pos())
		if err != nil {
			return nil, err
		}

		windows = append(windows, &WindowDefinition{
			Name:  windowName,
			AsPos: asPos,
			Expr:  condition,
		})

		if p.tryConsumeTokenKind(TokenKindComma) == nil {
			break
		}
	}

	var endPos Pos
	if len(windows) > 0 {
		endPos = windows[len(windows)-1].End()
	}

	return &WindowClause{
		WindowPos: pos,
		EndPos:    endPos,
		Windows:   windows,
	}, nil
}

func (p *Parser) tryParseHavingClause(pos Pos) (*HavingClause, error) {
	if !p.matchKeyword(KeywordHaving) {