现在,你可以在你的应用程序的任何地方调用deleteRow()方法来删除指定id的行。 请将"YourDatabaseHelper"替换为你的数据库帮助类的名称。 这样,你就可以在Android中使用id从SQLite数据库中删除行了。请注意,这只是一个简单的示例,你可以根据自己的需求进行修改和扩展。 相关搜索: Android:从片段中删除SQLIte...
public long insert (Stringtable,StringnullColumnHack,ContentValuesvalues) Convenience method for inserting a row into the database. Parameters Returns the row ID of the newly inserted row, or -1 if an error occurred 示例: ContentValues cv =newContentValues(); cv.put("username","a"); cv.put("...
要通过保持最低的删除重复rowid每(hash,d):delete from YourTablewhere rowid not in ( select min(rowid) from YourTable  ...
SELECT sql FROM (SELECT * FROM sqlite_master UNION ALL SELECT * FROM sqlite_temp_master)WHERE type!='meta'ORDER BY tbl_name, type DESC, name 或者,如果你给".schema"命令一个参数,由于你只想得到一个表的结构,查询可以是这样: SELECT sql FROM (SELECT * FROM sqlite_master UNION ALL SELECT * ...
比如,删除id为2的数据 1sqlite> delete from worker where id = 2; 2sqlite> select * from worker; 3id name age address wage 4--- --- --- --- --- 51 fanfan 27 HeNan 6sqlite> 表排序order by 除了基本操作,还有排序操作也会经常遇到 排序分为 升序ascend或者是降序descend.语法中分别未asc和...
(sql), "SELECT * FROM Book WHERE id = %d;", book->id); int rc = sqlite3_prepare(br_sqlite3->db, sql, -1, &stmt, NULL); return_value_if_fail(rc == SQLITE_OK, NULL); if (sqlite3_step(stmt) == SQLITE_ROW) { book_t* ret_book = book_create(); book_init(ret_book, ...
//删除记录(SID)-(void)deleteStudentByID:(NSInteger)SID{//1. 准备SQL语句NSString*sqlString=[NSString stringWithFormat:@"delete from stu where s_id = %ld",SID];//2. 执行sql语句intresult=sqlite3_exec(db,sqlString.UTF8String,NULL,NULL,NULL);//3. 结果if(result==SQLITE_OK){NSLog(@"删除...
c_str(), callback, NULL, NULL); sql = "DELETE FROM PERSON WHERE ID = 2;"; exit = sqlite3_exec(DB, sql.c_str(), NULL, 0, &messaggeError); if (exit != SQLITE_OK) { std::cerr << "Error DELETE" << std::endl; sqlite3_free(messaggeError); } else { std::cout << "...
the row ID of the newly inserted row, or -1 if an error occurred 示例: ContentValues cv =newContentValues(); cv.put("username","a"); cv.put("password","b"); insert("user",null, cv); SQLiteDataBase对象的update()接口: public intupdate(Stringtable,ContentValuesvalues,StringwhereClause,...
●select、insert、update、delete、from、create、where、desc、order、by、group、 table、alter、view、index等等 ●数据库中不可以使用关键字来命名表、字段 SQL语句的种类 ●数据定义语句: (DDL:Data Definition Language) 包括create和drop等操作; 例如:在数据库中创建新表或删除表(create table或drop table) ...