Questions tagged as 'null'

Tagged questions
2
answers

Accepting null fields in a Texbox

When I click on "Save", the program does a check of Texbox with a negotiation that I did not to let pass numbers repeat, the problem is that it of error if any Textbox is blank. Here is the code I saved saving the information in an...
asked by 03.01.2017 / 19:08
1
answer

Method $ _POST returning NULL

Good evening. I'm having a problem with my $ _POST method, because it just returns me NULL. I've already tried N forms, refiz design, BD, refiz class by class, etc., but to no avail. Where am I wrong? Here's a part of the code: <?php...
asked by 29.07.2016 / 04:00
1
answer

How to find Null values without specifying attribute (MariaDB)

I would like to do a search to find NULL values across the table without having to determine which of the attributes might have NULL. NOTE: with ALL the table I mean that somewhere in it has null, not that the table should be composed entirel...
asked by 04.07.2016 / 00:00
2
answers

SQL - put null values in 0

I have a pivot table that returns me some null values in SUM(1) . I wanted them to be zero rather than null, but I can not. Original pivot table SELECT Description AS Categoria, [ACS], [URO] FROM (...
asked by 02.06.2015 / 13:31
1
answer

Why is the description variable coming out null?

I do not understand why the variable descricao is not producing the values. In this case, it should look like this: Carregador antigo conectando a tomada de conector de dois pinos But it's coming out: Carregador antigo...
asked by 09.12.2015 / 23:46
1
answer

Define variable as null in a Query in php

I have the following QUERY on my system: $Query = "SELECT * FROM Monit WHERE ($Modulo IS NULL OR Modulo = '$Modulo') AND ($Usuario IS NULL OR Usuario = '$Usuario') AND ($Data IS NULL OR Data_reg = '$Data') ORDER BY Data_monit...
asked by 20.02.2018 / 15:34
2
answers

End loop when an entry is empty

I have the following situation: A repeat loop that asks for a name, and 2 notes, where the data entry should finish when you read an empty name, but the way below the second time the program runs the name is not asked, any tips on how to do? n...
asked by 24.09.2017 / 17:58
1
answer

Remove Null Item from a ComboBox c #

Hello, I need to develop an advanced search filter. I created some comboBoxs for the keywords, but whenever I need to fetch the contents of a column that eventually has less content than another column, the comboBox is populated with Cells in Nu...
asked by 29.07.2016 / 20:51
3
answers

SQL Server subquery is always returning null. How to fix.

I have a procedure and a COMMON TABLE EXPRESSION (subquery). This my CTE does a search and offers to my query the result, my query then uses the results of it. In my Address table I have a "Complement" field that allows null values. However w...
asked by 02.12.2015 / 05:05
0
answers

Datagrid Adding extra value without C # WPF

I have the following problem, I have a combobox <ComboBox x:Name ="CmbLista" ItemsSource="{Binding Path=Lista}" DisplayMemberPath="Descricao" SelectedValue="{Binding Path=Model, Mode = TwoWay}"...
asked by 10.10.2018 / 20:58