I have a table with an int column. The column allows nulls. Some records already contains nulls. If I go in through SQL Server Management Studio, I can edit fields, and set them to null. No problem. On my website, I run SQL code, like so: string strSql = "UPDATE MyTable SET Fi...
Subject Written By Posted SET NULL as table update Ruben Doesburg November 25, 2013 11:50AM Re: SET NULL as table update Peter Brawley November 25, 2013 11:55AM Sorry, you can't reply to this topic. It has been closed.
private将在数据库中变为"N“。我绝对需要将db中的值更改为NULL,而不是'‘空。 数据库插入工作正常。这就是它: $priv = $_POST['private']; $sql = "UPDATE wp_users SET privacy = :private WHERE ID 浏览0提问于2015-04-10得票数 4 回答已采纳 3回答...
as myID,* from ST_User a order by myID --定义表变量 declare @t table ( id int not null, msg nvarchar(50) null ) insert into @t values(1,'1') insert into @t values(2,'2') select * from @t 三、循环 --while循环计算1到100的和 declare @a int declare @sum int set @a=1 ...
此外清空資料欄位的話,應該是要使用null 而不是 '' 例如 Dim str2 As String = "Update 物業 Set [房客序號] = null Where [大樓名稱]='a' 已編輯 Bruce_柏 2012年5月28日 上午 02:35 已標示為解答 C.Kevin 2012年5月28日 上午 02:52 2012年5月28日 上午 02:35 ...
Update t1 set t1.c2 = t2.c2 from t1 inner join t2 on t1.c1 = t2.c1 1. 2. 3. 4. 5. 6. 7. 二、FROM 子句中指定的表的别名不能作为 SET column_name 子句中被修改字段的限定符使用。飞飞As,p技术乐园例如,下面的内容无效: UPDATE titles ...
UPDATE[%keyword]table-ref[[AS]t-alias]value-assignment-statement[FROM[optimize-option]select-table[[AS]t-alias]{,select-table2[[AS]t-alias]}][WHEREcondition-expression]UPDATE[%keyword]table-ref[[AS]t-alias]value-assignment-statement[WHERECURRENTOFcursor]value-assignment-statement::=SETcolumn1=...
] table_name SET { column_name = { expression | NULL } } [ ,...n ] [ FROM from_clause ] [ WHERE <search_condition> ] [ OPTION ( LABEL = label_name ) ] [;] ArgumentsWITH <common_table_expression> Specifies the temporary named result set or view, also known as common table ...
Updates the designated column with a null value. C# Copy [Android.Runtime.Register("updateNull", "(Ljava/lang/String;)V", "GetUpdateNull_Ljava_lang_String_Handler:Java.Sql.IResultSetInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")] public void UpdateNull (st...