db: only strict schemas

internal/sql/parser/order_by.go

@@ -7,26 +7,26 @@ import (
 	"github.com/chaisql/chai/internal/sql/scanner"
 )
 
-func (p *Parser) parseOrderBy() (expr.Path, scanner.Token, error) {
+func (p *Parser) parseOrderBy() (expr.Column, scanner.Token, error) {
 	// parse ORDER token
 	ok, err := p.parseOptional(scanner.ORDER, scanner.BY)
 	if err != nil || !ok {
-		return nil, 0, err
+		return "", 0, err
 	}
 
-	// parse path
-	path, err := p.parsePath()
+	// parse col
+	col, err := p.parseColumn()
 	if err != nil {
-		return nil, 0, err
+		return "", 0, err
 	}
 
 	// parse optional ASC or DESC
 	if tok, _, _ := p.ScanIgnoreWhitespace(); tok == scanner.ASC || tok == scanner.DESC {
-		return expr.Path(path), tok, nil
+		return col, tok, nil
 	}
 	p.Unscan()
 
-	return expr.Path(path), 0, nil
+	return col, 0, nil
 }
 
 func (p *Parser) parseLimit() (expr.Expr, error) {