Hi,

When I try to execute query within Sql tab, many a times I get "Missing value in the form!" alert. I'm not sure if it's happening to just me or it's a bug introduced somehow.

I using current git version.

Steps to reproduce:

1. Select any database from nav pannel

2. Select Sql tab

2. copy and paste this query
create table missing_val (
    id integer
)

3. click GO.

OR

1. Select any table from nav panel.

2. Codemirror editor will have a pre-populated query so just click "GO"

both the above comes with a pop up saying "Missing value in the form!", while it should not.

I was debugging the code for why its happening, i realized in checkSqlQuery function,
sqlQuery.value is either empty or is having just part of input value in some cases (where it is working as the value is not empty). So to fix it, I added a line that explicitly set the value of sqlQuery element and now its working for me.
Here is the commit, let me know if it looks fine, I'll add a bug and send a pull request.
https://github.com/smita786/phpmyadmin/commit/51d78cbb81f0e0121b3b1b932604487a71c809f8

Thanks and Regards

- Smita Kumari