Method convertTableExpression

internal/engine/clickhouse/convert.go:247–287

(n *chast.TableExpression)

}

func (c *cc) convertTableExpression(n *chast.TableExpression) ast.Node {
	var result ast.Node

	switch t := n.Table.(type) {
	case *chast.TableIdentifier:
		rv := parseTableIdentifierToRangeVar(t)
		if n.Alias != "" {
			alias := n.Alias
			rv.Alias = &ast.Alias{Aliasname: &alias}
		}
		result = rv
	case *chast.Subquery:
		subselect := &ast.RangeSubselect{
			Subquery: c.convert(t.Query),
		}
		alias := n.Alias
		if alias == "" && t.Alias != "" {
			alias = t.Alias
		}
		if alias != "" {
			subselect.Alias = &ast.Alias{Aliasname: &alias}
		}
		result = subselect
	case *chast.FunctionCall:
		// Table function like file(), url(), etc.
		rf := &ast.RangeFunction{
			Functions: &ast.List{
				Items: []ast.Node{c.convertFunctionCall(t)},
			},
		}
		if n.Alias != "" {
			alias := n.Alias
			rf.Alias = &ast.Alias{Aliasname: &alias}
		}
		result = rf
	default:
		result = &ast.TODO{}
	}

	return result
}

func (c *cc) convertTableJoin(n *chast.TableJoin, left, right ast.Node) *ast.JoinExpr {
	join := &ast.JoinExpr{