Add support for RENAME TABLE and table synonyms (#165)

Author: takabow

statement.go

@@ -92,6 +92,7 @@ var (
 	grantRe          = regexp.MustCompile(`(?is)^GRANT\s.+$`)
 	revokeRe         = regexp.MustCompile(`(?is)^REVOKE\s.+$`)
 	alterRe          = regexp.MustCompile(`(?is)^ALTER\s.+$`)
+	renameRe         = regexp.MustCompile(`(?is)^RENAME\s.+$`)
 	truncateTableRe  = regexp.MustCompile(`(?is)^TRUNCATE\s+TABLE\s+(.+)$`)
 	analyzeRe        = regexp.MustCompile(`(?is)^ANALYZE$`)
 
@@ -150,6 +151,8 @@ func BuildStatementWithComments(stripped, raw string) (Statement, error) {
 		return &DdlStatement{Ddl: stripped}, nil
 	case alterRe.MatchString(stripped):
 		return &DdlStatement{Ddl: stripped}, nil
+	case renameRe.MatchString(stripped):
+		return &DdlStatement{Ddl: stripped}, nil
 	case grantRe.MatchString(stripped):
 		return &DdlStatement{Ddl: stripped}, nil
 	case revokeRe.MatchString(stripped):

statement_test.go

@@ -91,6 +91,11 @@ func TestBuildStatement(t *testing.T) {
 			input: "CREATE TABLE t1 (id INT64 NOT NULL) PRIMARY KEY (id)",
 			want:  &DdlStatement{Ddl: "CREATE TABLE t1 (id INT64 NOT NULL) PRIMARY KEY (id)"},
 		},
+		{
+			desc:  "RENAME TABLE statement",
+			input: "RENAME TABLE t1 TO t2, t3 TO t4",
+			want:  &DdlStatement{Ddl: "RENAME TABLE t1 TO t2, t3 TO t4"},
+		},
 		{
 			desc:  "ALTER TABLE statement",
 			input: "ALTER TABLE t1 ADD COLUMN name STRING(16) NOT NULL",