c.execute("DELETE from COMPANY where ID=2;") conn.commit() print "Total number of rows deleted :", conn.total_changes cursor = conn.execute("SELECT id, name, address, salary from COMPANY") for row in cursor: print "ID = ", row[0] print "NAME = ", row[1] print "ADDRESS = ...
WHERE name IN ('Google','菜鸟教程'); 1. 2. IN 与 = 的异同 相同点:均在WHERE中使用作为筛选条件之一、均是等于的含义 不同点:IN可以规定多个值,等于规定一个值 IN SELECT column_name(s) FROM table_name WHERE column_name IN (value1,value2,...); = SELECT column_name(s) FROM table_name...
); } } //删 - (void) deleteUserId:(int)nId { NSString * strSql = [NSString stringWithFormat: @"delete from tbl_User where Id = %d", nId]; char * pErrorMsg; if (SQLITE_OK == sqlite3_exec(m_pDb, strSql.UTF8String, NULL, NULL, &pErrorMsg)) { NSLog(@"添加成功!"); } ...
connect(database) cursor = conn.cursor() try: # SQL查询,获取BLOB数据query = f"SELECT {column} FROM {table} WHERE id=?" cursor.execute(query, (id,)) # 读取BLOB数据result = cursor.fetchone() if result: # 将BLOB数据解码为字节串 blob_data = result[0] img_data = base64.b64encode(b...
文件命名为py3_sqlite3.py,在这个文件中进行操作代码编写: #sqlite3是一个内置的python模块 #使用该模块进行创建数据库,表,运行查询等 #注:以下内容需要具有数据库知识基础 import...c.execute("SELECT * FROM employees WHERE last=:last", {'last': lastname}) return c.fetchall() #更新员工函数...用...
您可以对照存储的数据进行检查,或比较如下所示的字符串:WHERE type='order_book' COLLATE NOCASE ... 0 0 0 没找到需要的内容?换个关键词再搜索试试 向你推荐 SELECT * FROM `o2o_category` WHERE `parent_id` = 0 AND `status` IN (neq -1) ORDER BY `id` DESC 关于where...
rc =execSqlF(db, pzErrMsg,"SELECT sql FROM \"%w\".sqlite_master""WHERE type='index' AND length(sql)>10", zDbMain );if( rc!=SQLITE_OK )gotoend_of_vacuum; db->init.iDb =0;/*Loop through the tables in the main database. For each, do ...
WHERE id = ?;";void (^ __block writeBlock)() = Block_copy(^{sqlite3_stmt *stmt;if (sqlite3_prepare_v2(database,update, -1, &stmt,NULL) == SQLITE_OK) {sqlite3_bind_int(stmt, 1, arc4random());sqlite3_bind_int(stmt, 2, arc4random() % 1000 + 1);if (sqlite3_step(stmt...
("ScriptType", Type.ScriptType),26newSQLiteParameter("IsUsing", Type.IsUsing),27newSQLiteParameter("ScriptTypeId", Type.ScriptTypeId));28}2930publicScriptTypeM GetbyId(Guid id)31{32DataTable table = SQLiteHelper.GetDataTable("select * from TB_ScriptType where ScriptTypeId=@id",33newSQLite...
// insertNSString * sqlCmd = [NSString stringWithFormat:@"insert into customer (name, address, age) values ('%@', '%@', %d)",customer.name, customer.address, customer.age];// updateNSString * sqlCmd = [NSString stringWithFormat:@"update customer set address='%@',age=%d where name...