All Questions

2
answers

Problem with the bootstrap modal backdrop

I have a problem closing a modal, this problem does not always happen, well the detail is that the backdrop of the modal is attached image. The modal is closed but the backdrop remains, the way I am closing it is as follow...
asked on 27.05.2016 / 22:09
3
answers

The query does not work, it does not detect letters

I'm trying to do a query in PHP and MYSQL, but it does not work for me, 'grado' is a number, for example 2. If I make the query only with 'grado' if it works, but if I try with 'grupo' which is a letter, for example B, it...
asked on 09.02.2016 / 15:58
4
answers

connection c # with postgres

I have a problem with this connection to pgsql. I do not know what is happening. I placed a breakpoint in each line of code and it enters all the lines but the user does not recognize me, I do not know if I'm doing it wrong or I'm missing someth...
asked on 04.04.2016 / 20:03
4
answers

How can I get random values from an array until the elements of it end?

The fact is that I want to get a random array values from a array until they end. All the array have 7 values in total and, in the end, what I want to achieve is to obtain a combination of these values automatically to generate sente...
asked on 09.01.2018 / 18:34
2
answers

Error "Unsupported major.minor version" in Java

When trying to run a class made in
asked on 02.12.2015 / 00:34
3
answers

Is it correct to put an event inside another event? [closed]

I have a script in which I am going to add XLS files, once I validate the file format, I close a bootstrap modal and open another modal where it is a confirmation window to see if it is safe to upload that file. This confirmation modality has...
asked on 01.02.2018 / 20:16
1
answer

SQLite3 does not fail to insert nonexistent reference

I am working against a database in SQLite3 and I was surprised to be able to insert a line with a reference to another table in which the corresponding row with the foreign key does not exist. The following minimum example illustrates the sit...
asked on 07.01.2016 / 09:17
5
answers

Error in date format sql server 2012

I have an application whose information is stored in a database on sql server but I have the following problem: When making a query with the following script directly from the sql server engine, it returns me records: SELECT * FROM PR_11 WH...
asked on 05.02.2016 / 21:50
1
answer

Are quotes important in mysql queries?

Specifically, I mean these - > '' when selecting the fields to consult. I understand that when entering values if it is important to tell if it is a number or a string, but to select the fields works whether you put them or...
asked on 08.01.2018 / 12:29
2
answers

How to use buttons in HTML form to choose between several options?

I am designing a registration form and the section of choice of sex is not designed as a dropdown but as three buttons that when choosing one is active and I do not know how to do this in HTML and CSS. I have tried to put a type button but it...
asked on 20.02.2018 / 14:27