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# Mysql problem to store only different data

By : Usama CH
Date : October 16 2020, 11:12 AM
With these it helps Sometimes data we are about to store have the same title and description as that we already have in our database. We do not wish to store data if the title and description of incoming data are the same as the title and description of already stored data. How would we do that? , Hey. Mark the columns that hold them UNIQUE
code :

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## Store '\abc\def\fg.jpg' Problem in MySQL

By : user1480658
Date : March 29 2020, 07:55 AM
will be helpful for those in need You need to escape it twice, first for PHP because the \ character has a special meaning:
From the docs:
code :
$urlPath ='\\abc\\def\\fg.jpg';  $databaseUrlPath = mysql_real_escape_string($urlPath);  $databaseUrlPath = addslashes(\$urlPath);


## problem with ActiveRecord/Rails ordering of query data from MySQL -- no problem in SQLite

By : Karma
Date : March 29 2020, 07:55 AM
I hope this helps . it's the quote in ther order params .
the query generated will be (similar to)
code :
"SELECT id, title FROM pages WHERE (pages.pub = 1) ORDER BY 'sort' ASC"

Page.select('id, menu_name').where(:published => true, :left_menu => true).order("sort ASC")


## mysql: Illegal mix of collations in a store procedure problem

By : Emil Kropiwnicki
Date : March 29 2020, 07:55 AM
wish of those help I think the problem is with the collation of the vehStatus parameter. It seems the server or the connection default character set is set to latin1 and the greek_general_ci collation uses the greek character set (ISO 8859-7). Try declaring your parameter like this:
code :
vehStatus text character set greek


## When you store data into a VARCHAR in mysql does it take into account returns? or does it just store a block of text?

By : Ankit Gupta
Date : March 29 2020, 07:55 AM
hop of those help? Yes, a 'return' is still a new line character, so will be stored. It's essentially stored as a \n (a new line)
If you're storing large chunks of text though, you should look to using something like the 'TEXT' or 'BLOB' formats, rather than VARCHAR

## ETL between a MySQL primary Data Store and a MongoDB secondary Data Store

By : Czenrezig
Date : March 29 2020, 07:55 AM
it helps some times Pentaho provides change-data-capture option which can solve Data-synchronization problems.
If by Overkill you mean Setup, Configuration, then Yes that is the common problem with ETL tools and PENTAHO is the easiest among them.