These value then POST by the form and then captured by server script(in this case PHP). The problem is: ALL of this captured blank are actually treated as '' << blank string NOT the actual NULL. SO, if you tried to write these blank values into mySQL cell that was defined as INT ...
You need to use parameterized query and pass DBNull.Value as a parameter's value. In that case it will work fine. Here is sample how to use parameterized queries/stored procedures http://support.microsoft.com/kb/308049/en-us V Can use this if v r having Stored Procedure. but i m not...
How to open a socket connection based on an insert TRIGGER? How to pass a Datarow as Serialized object How to pass array values in query string How to Pass Null value as Parameter to a Stored Procedure using SQL DataSource How to pass table name as parameter to a Stored Procedure?
This can be done in below: INSERT INTO orders (ID, customer_name, order_date, total_orders) SELECT ID, customer_name, order_date, total_orders FROM orders
Re: how do you insert a null value in a parameterized SQL statement? System.DBNull.Value can't be converted to a string it will give you a conversion error. Dealing with DBNulls are annoying, but you have no choice really when dealing with databases. Reply With Quote May...
It’s easier to visualize any data in Excel, and thus easier to update accurately. In this article, I’m going to explain how to insert data from Excel to SQL Server using these 2 different, reliable methods: Method 1: Use SQL Spreadsto insert directly from Excel to SQL tables – the...
INSERTINTOtable_name(column1,column2,column3,...)VALUES(value1,value2,value3,...); SQL Copy Here, you can specify the columns where you want to insert the data, allowing you to selectively populate specific columns while leaving others null. This can be particularly useful when dealing wit...
Note:To insert data into a registered feature class, a unique, not-null value must be specified for the ObjectID column. To do this, theNext_RowIDprocedure must be used. SQL Server Geometry sample: -- Get the number of rows in the looping table ...
How to Insert Values into an Identity Column in SQL Server SETIDENTITY_INSERTtable ON Insert records SET IDENTITY_INSERT table OFF 标签:database mr liao 粉丝-0关注 -1 +加关注 0 0 升级成为会员
I need to insert a NULL value for an int column using $db->prepare and $sql->execute, but always get a 0 no matter what value I use in the execute function. Here are the codes. $db->do( "create table if not exists gsm (data int)"); ...