Handle Percona compressed column extension

Percona has a custom extension where you can set compression at a column
level, see:

https://docs.percona.com/percona-server/5.7/flexibility/compressed_columns.html

This is an extension of the parser as well. As we also support Percona,
we should be able to parse this too and not fail with a syntax error.

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

go/vt/sqlparser/ast_funcs.go

@@ -2261,6 +2261,8 @@ func (columnFormat ColumnFormat) ToString() string {
 		return keywordStrings[DYNAMIC]
 	case DefaultFormat:
 		return keywordStrings[DEFAULT]
+	case CompressedFormat:
+		return keywordStrings[COMPRESSED]
 	default:
 		return "Unknown column format type"
 	}

go/vt/sqlparser/constants.go

@@ -930,6 +930,7 @@ const (
 	FixedFormat
 	DynamicFormat
 	DefaultFormat
+	CompressedFormat
 )
 
 // Transaction access mode

go/vt/sqlparser/parse_test.go

@@ -6347,14 +6347,25 @@ func TestParseVersionedComments(t *testing.T) {
 partition by range (id)
 (partition x values less than (5) engine InnoDB,
  partition t values less than (20) engine InnoDB)`,
+		}, {
+			input:        "CREATE TABLE `TABLE_NAME` (\n  `col1` longblob /*!50633 COLUMN_FORMAT COMPRESSED */,\n  `id` bigint unsigned NOT NULL,\n  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=COMPRESSED",
+			mysqlVersion: "8.0.1",
+			output: `create table TABLE_NAME (
+	col1 longblob column_format compressed,
+	id bigint unsigned not null,
+	primary key (id)
+) ENGINE InnoDB,
+  CHARSET utf8mb4,
+  COLLATE utf8mb4_bin,
+  ROW_FORMAT COMPRESSED`,
 		},
 	}
 
 	for _, testcase := range testcases {
 		t.Run(testcase.input+":"+testcase.mysqlVersion, func(t *testing.T) {
 			parser, err := New(Options{MySQLServerVersion: testcase.mysqlVersion})
 			require.NoError(t, err)
-			tree, err := parser.Parse(testcase.input)
+			tree, err := parser.ParseStrictDDL(testcase.input)
 			require.NoError(t, err, testcase.input)
 			out := String(tree)
 			require.Equal(t, testcase.output, out)