Removed that redundand informations (#24)

* Fixed the bug

- Syntax error occurred when SQL contains partition queries.

* Removed that redundand informations

To cause unexpected differences currured.

Author: hatajoe

builder/builder.go

@@ -174,8 +174,6 @@ func willAddIndex(old, new *mysql.Table) []string {
 		}
 		newIndices := newIndicesMap[keyName]
 		oldIndices := oldIndicesMap[keyName]
-		newIndices.ResetCardinality()
-		oldIndices.ResetCardinality()
 		if reflect.DeepEqual(oldIndices, newIndices) {
 			continue
 		}

dialect/mysql/index.go

@@ -15,7 +15,6 @@ type (
 		SeqInIndex   int32
 		ColumnName   string
 		Collation    string
-		Cardinality  JsonNullInt64
 		SubPart      JsonNullString
 		Packed       JsonNullString
 		Null         string
@@ -59,14 +58,6 @@ func (m Index) KeyNamesWithSubPart() []string {
 	return names
 }
 
-func (m *Indices) ResetCardinality() {
-	for i := range *m {
-		for j := range (*m)[i] {
-			(*m)[i][j].Cardinality = JsonNullInt64{}
-		}
-	}
-}
-
 func (m Indices) ToSQL() []string {
 	indices := m.getSortedIndices(m.GetSortedKeys())
 	indexSQLs := make([]string, 0, len(m))
@@ -174,7 +165,6 @@ func GetIndices(db *sql.DB, table string) (Indices, error) {
 			&idxCol.SeqInIndex,
 			&idxCol.ColumnName,
 			&idxCol.Collation,
-			&idxCol.Cardinality,
 			&idxCol.SubPart,
 			&idxCol.Packed,
 			&idxCol.Null,

dialect/mysql/table.go

@@ -16,13 +16,6 @@ type (
 		Engine         string
 		Version        int
 		RowFormat      string
-		TableRows      int
-		AvgRowLength   int
-		DataLength     int
-		MaxDataLength  int
-		IndexLength    int
-		DataFree       int
-		AutoIncrement  JsonNullInt64
 		TableCollation string
 		CheckSum       JsonNullString
 		CreateOptions  string
@@ -163,13 +156,6 @@ func GetTables(db *sql.DB, schema string, tableNames ...string) (Tables, error)
 			&table.Engine,
 			&table.Version,
 			&table.RowFormat,
-			&table.TableRows,
-			&table.AvgRowLength,
-			&table.DataLength,
-			&table.MaxDataLength,
-			&table.IndexLength,
-			&table.DataFree,
-			&table.AutoIncrement,
 			&table.TableCollation,
 			&table.CheckSum,
 			&table.CreateOptions,