func (db *mssql) GetIndexes(tableName string) (map[string]*core.Index, error) {
args := []interface{}{tableName}
s := `SELECT
IXS.NAME AS [INDEX_NAME],
C.NAME AS [COLUMN_NAME],
IXS.is_unique AS [IS_UNIQUE]
FROM SYS.INDEXES IXS
INNER JOIN SYS.INDEX_COLUMNS IXCS
ON IXS.OBJECT_ID=IXCS.OBJECT_ID AND IXS.INDEX_ID = IXCS.INDEX_ID
INNER JOIN SYS.COLUMNS C ON IXS.OBJECT_ID=C.OBJECT_ID
AND IXCS.COLUMN_ID=C.COLUMN_ID
WHERE IXS.TYPE_DESC='NONCLUSTERED' and OBJECT_NAME(IXS.OBJECT_ID) =?
`
db.LogSQL(s, args)
rows, err := db.DB().Query(s, args...)
if err != nil {
return nil, err
}
defer rows.Close()
indexes := make(map[string]*core.Index, 0)
for rows.Next() {
var indexType int
var indexName, colName, isUnique string
err = rows.Scan(&indexName, &colName, &isUnique)
if err != nil {
return nil, err
}
i, err := strconv.ParseBool(isUnique)
if err != nil {
return nil, err
}
if i {
indexType = core.UniqueType
} else {
indexType = core.IndexType
}
colName = strings.Trim(colName, "` ")
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
indexName = indexName[5+len(tableName) : len(indexName)]
}
var index *core.Index
var ok bool
if index, ok = indexes[indexName]; !ok {
index = new(core.Index)
index.Type = indexType
index.Name = indexName
indexes[indexName] = index
}
index.AddColumn(colName)
}
return indexes, nil
}
func (db *mysql) GetIndexes(tableName string) (map[string]*core.Index, error) {
args := []interface{}{db.DbName, tableName}
s := "SELECT `INDEX_NAME`, `NON_UNIQUE`, `COLUMN_NAME` FROM `INFORMATION_SCHEMA`.`STATISTICS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?"
rows, err := db.DB().Query(s, args...)
if err != nil {
return nil, err
}
defer rows.Close()
indexes := make(map[string]*core.Index, 0)
for rows.Next() {
var indexType int
var indexName, colName, nonUnique string
err = rows.Scan(&indexName, &nonUnique, &colName)
if err != nil {
return nil, err
}
if indexName == "PRIMARY" {
continue
}
if "YES" == nonUnique || nonUnique == "1" {
indexType = core.IndexType
} else {
indexType = core.UniqueType
}
colName = strings.Trim(colName, "` ")
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
indexName = indexName[5+len(tableName) : len(indexName)]
}
var index *core.Index
var ok bool
if index, ok = indexes[indexName]; !ok {
index = new(core.Index)
index.Type = indexType
index.Name = indexName
indexes[indexName] = index
}
index.AddColumn(colName)
}
return indexes, nil
}
func (db *oracle) GetIndexes(tableName string) (map[string]*core.Index, error) {
args := []interface{}{tableName}
s := "SELECT t.column_name,i.uniqueness,i.index_name FROM user_ind_columns t,user_indexes i " +
"WHERE t.index_name = i.index_name and t.table_name = i.table_name and t.table_name =:1"
rows, err := db.DB().Query(s, args...)
if db.Logger != nil {
db.Logger.Info("[sql]", s, args)
}
if err != nil {
return nil, err
}
defer rows.Close()
indexes := make(map[string]*core.Index, 0)
for rows.Next() {
var indexType int
var indexName, colName, uniqueness string
err = rows.Scan(&colName, &uniqueness, &indexName)
if err != nil {
return nil, err
}
indexName = strings.Trim(indexName, `" `)
if uniqueness == "UNIQUE" {
indexType = core.UniqueType
} else {
indexType = core.IndexType
}
var index *core.Index
var ok bool
if index, ok = indexes[indexName]; !ok {
index = new(core.Index)
index.Type = indexType
index.Name = indexName
indexes[indexName] = index
}
index.AddColumn(colName)
}
return indexes, nil
}
func (db *sqlite3) GetIndexes(tableName string) (map[string]*core.Index, error) {
args := []interface{}{tableName}
s := "SELECT sql FROM sqlite_master WHERE type='index' and tbl_name = ?"
rows, err := db.DB().Query(s, args...)
if db.Logger != nil {
db.Logger.Info("[sql]", s, args)
}
if err != nil {
return nil, err
}
defer rows.Close()
indexes := make(map[string]*core.Index, 0)
for rows.Next() {
var tmpSql sql.NullString
err = rows.Scan(&tmpSql)
if err != nil {
return nil, err
}
if !tmpSql.Valid {
continue
}
sql := tmpSql.String
index := new(core.Index)
nNStart := strings.Index(sql, "INDEX")
nNEnd := strings.Index(sql, "ON")
if nNStart == -1 || nNEnd == -1 {
continue
}
indexName := strings.Trim(sql[nNStart+6:nNEnd], "` []")
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
index.Name = indexName[5+len(tableName) : len(indexName)]
} else {
index.Name = indexName
}
if strings.HasPrefix(sql, "CREATE UNIQUE INDEX") {
index.Type = core.UniqueType
} else {
index.Type = core.IndexType
}
nStart := strings.Index(sql, "(")
nEnd := strings.Index(sql, ")")
colIndexes := strings.Split(sql[nStart+1:nEnd], ",")
index.Cols = make([]string, 0)
for _, col := range colIndexes {
index.Cols = append(index.Cols, strings.Trim(col, "` []"))
}
indexes[index.Name] = index
}
return indexes, nil
}