Method parseWindowCondition

parser/parser_query.go:823–859

(pos Pos)

}

func (p *Parser) parseWindowCondition(pos Pos) (*WindowExpr, error) {
	if err := p.expectTokenKind(TokenKindLParen); err != nil {
		return nil, err
	}
	var windowName *Ident
	if p.canParseWindowNameInParens() {
		var err error
		windowName, err = p.parseIdent()
		if err != nil {
			return nil, err
		}
	}
	partitionBy, err := p.tryParsePartitionByClause(pos)
	if err != nil {
		return nil, err
	}
	orderBy, err := p.tryParseOrderByClause(p.Pos())
	if err != nil {
		return nil, err
	}
	frame, err := p.tryParseWindowFrameClause(p.Pos())
	if err != nil {
		return nil, err
	}
	rightParenPos := p.Pos()
	if err := p.expectTokenKind(TokenKindRParen); err != nil {
		return nil, err
	}
	return &WindowExpr{
		LeftParenPos:  pos,
		RightParenPos: rightParenPos,
		WindowName:    windowName,
		PartitionBy:   partitionBy,
		OrderBy:       orderBy,
		Frame:         frame,
	}, nil
}

func (p *Parser) canParseWindowNameInParens() bool {
	if !p.matchTokenKind(TokenKindIdent) {