开发者ID:lonelywoolf,项目名称:hypervm,代码行数:15,代码来源:lib.php functiondropcolumn($tbl_name, $column){ dprint("Dropping Column...\n"); $db =newSqlite($tbl_name); $columnold = $db->getColumnTypes(); $oldcolumns = array_keys($columnold);foreach($oldcolumnsas$key => $l) {...
voidgenPkgRow(sqlite3_stmt* stmt, Row& r){for(inti =0; i < sqlite3_column_count(stmt); i++) {autocolumn_name =std::string(sqlite3_column_name(stmt, i));autocolumn_type =sqlite3_column_type(stmt, i);if(column_type == SQLITE_TEXT) {autovalue = sqlite3_column_text(stmt, i);...
doublesqlite3_column_double(sqlite3_stmt*, int iCol); intsqlite3_column_int(sqlite3_stmt*, int iCol); sqlite3_int64sqlite3_column_int64(sqlite3_stmt*, int constunsigned charsqlite3_column_text(sqlite3_stmt, const void*sqlite3_column_text16(sqlite3_stmt*, int intsqlite3_column_type(sqlit...
intsqlite3_column_int(sqlite3_stmt*, int iCol); sqlite3_int64sqlite3_column_int64(sqlite3_stmt*, int constunsigned charsqlite3_column_text(sqlite3_stmt, const void*sqlite3_column_text16(sqlite3_stmt*, int intsqlite3_column_type(sqlite3_stmt*, int iCol); sqlite3_value*sqlite3_column_va...
只需在游标中找到具有notnull=1和dflt_value=1的行
保存数据是难免的。如果数据量较小的时候可用SharedPreferences或File来保存，当数据量较大 ...
添加NuGet包,注意依赖版本 修改配置文件appsettings.json DbFirst 实体自动生成带有模型验证、注解、Tenant特性【这一块可以单独写一个层】 /// /// 初始化SqlSugarClient /// /// <returns>返回SqlSugarClient对象</returns> public static SqlSugarClient GetInstance(DbType dbType) { var strConnectionString...
{//光标移动成功 把数据取出SqliteBeansqliteBean=newSqliteBean();sqliteBean.setId(c.getInt(c.getColumnIndex("_id")));sqliteBean.setName(c.getString(c.getColumnIndex("name")));sqliteBean.setImg(c.getString(c.getColumnIndex("img")));sqliteBean.setType(c.getInt(c.getColumnIndex("type"...
通过getColumnIndex() 转换成字段号; 通过getString(),getInt() 等方法得到给定字段当前记录的值; 通过requery() 方法重新执行查询得到游标; 通过close() 方法释放游标资源; 删除数据:删除数据也是一件很简单的事,只需要调用delete方法,传入参数即可,delete(String table, String whereClause,String[] whe...
modelBuilder.Entity<City>().Property(c => c.Location) .HasColumnType("POINTZ"); 空間函式對應 下表顯示哪些NetTopologySuite(NTS) 成員會轉譯成哪些 SQL 函式。 .NETSQL 幾何。地區區域(@geometry) 幾何。AsBinary()AsBinary(@geometry) 幾何。AsText()AsText(@geometry) ...