SQLite数据库判断表是否存在的方法
发布时间:2020-12-12 19:38:15 所属栏目:百科 来源:网络整理
导读:public boolean tableIsExist (String tableName){ boolean result = false ; if (tableName == null ){ return false ; } SQLiteDatabase db = null ; Cursor cursor = null ; try { db = this .getReadableDatabase(); String sql = "SELECT COUNT(*) as c
public boolean tableIsExist(String tableName){
boolean result = false;
if(tableName == null){
return false;
}
SQLiteDatabase db = null;
Cursor cursor = null;
try {
db = this.getReadableDatabase();
String sql = "SELECT COUNT(*) as c FROM sqlite_master where type ='table' and name ='"+ tableName.trim()+"' ";
cursor = db.rawQuery(sql,null);
if(cursor.moveToNext()){
int count = cursor.getInt(0);
if(count>0){
result = true;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return result;
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