fix: deprecate defaultTable in resolve

Author: qykr

internal/compiler/resolve.go

@@ -239,16 +239,11 @@ func (comp *Compiler) resolveCatalogRefs(qc *QueryCatalog, rvs []*ast.RangeVar,
 	c := comp.catalog
 
 	aliasMap := map[string]*ast.TableName{}
-	// TODO: Deprecate defaultTable
-	var defaultTable *ast.TableName
 	var tables []*ast.TableName
 
 	typeMap := map[string]map[string]map[string]*catalog.Column{}
 	indexTable := func(table catalog.Table) error {
 		tables = append(tables, table.Rel)
-		if defaultTable == nil {
-			defaultTable = table.Rel
-		}
 		schema := table.Rel.Schema
 		if schema == "" {
 			schema = c.DefaultSchema
@@ -346,18 +341,16 @@ func (comp *Compiler) resolveCatalogRefs(qc *QueryCatalog, rvs []*ast.RangeVar,
 
 	addColumnParam := func(ref paramRef, key string, location int) error {
 		var schema, rel string
-		// TODO: Deprecate defaultTable
-		if defaultTable != nil {
-			schema = defaultTable.Schema
-			rel = defaultTable.Name
-		}
 		if ref.rv != nil {
 			fqn, err := ParseTableName(ref.rv)
 			if err != nil {
 				return err
 			}
 			schema = fqn.Schema
 			rel = fqn.Name
+		} else if len(tables) == 1 {
+			schema = tables[0].Schema
+			rel = tables[0].Name
 		}
 		if schema == "" {
 			schema = c.DefaultSchema