![]() And the writing x rows and flushing I've found when developing myself is much faster than trying to get. The Write to temp and then move/rename is the way Photoshop and some other applications save their data. I'd recommend writing to a temp file, then rename/move it to the user's specified one when done. When building up the huge string to the dump into the file when you've done generating it, instead of building 1 huge string and writing it to file all at once when the export is done, I get much better performance by only doing a few hundred rows of CSV generated at a time, write it to the file and flush the buffer you have been writing the generated data to. NET framework can't deal with huge strings very well, and tends to perform badly as a result. Something I've noticed when building CSV export applications is that the MS. Note how long it takes and then export a subset of that data and see how the time taken does not correlate linearly with the amount of rows. Get a table with 15k or so records or more, and export through the wizard. However, this is something I've come across before with. Disproportionately slow comapred to a smaller set. If you are looking for a way to stop the timeout error, now you have two options.Workbench is very slow exporting large datasets through the CSV export wizard. You can find a more detailed post about that here. However, I’d imagine that some things would call for a much higher timeout, especially if you wanted to do a lot of transactions.Īs of, I did some additional noodling around with the queries that produced this slow result and realized some simple indexing reduced the query time from ~50 seconds to. I changed the 30 second defaults to 180, and returned the data I needed. In my case, those were just too short for my long running queries. As you might expect, the DBMS has settings to manage its connection to the SQL server. ![]() ![]() As a workaround, a MySQL 5.6 version of mysqldump could be used. (Bug 22084956, Bug 78924) Workbench 6.3.5 would fail to export MySQL Server 5.6 and below, due to changes present in MySQL Server 5.7. There is a quick setting in Preferences that helped me. As a workaround, the SQL Editor could be used to decorate the 'CREATE PROCEDURE' code with delimiters. Thanks to this specific answer on StackOverflow, but the description of “how-to” it links to is no longer valid, hence this blog post. It turns out there are timeout settings for the DBMS that you extend to make sure that it waits a sufficient amount of time for your query to return data. conf files for the underlying MySQL install, and I went too long down this road before trying something in Workbench itself. I read a few posts that suggested manipulating some of the. I did some initial googling on the error code, but it is a pretty general error code, so it was difficult to be sure whether this was a limitation of SQL or the Workbench DBMS. ON hd2012.UNITID = ef2012a_dist_rv.UNITID colleges and universities from 2012-2015, so this join involved a 7K row table and another with 25K rows, so not inconsequential but also not BIG data level. I’m working with distance education reporting data for all U.S. ![]() The query itself wasn’t overly complex, but I was using aggregate functions, group by, and a join to consolidate a dataset. I was trying to run a query on my local SQL install (whatever MAMP manages and provisions) using MySQL Workbench 6.3 for Mac but kept getting a timeout error. This is kind of a silly and duplicative post, but I spent too much time searching for the right answer, so maybe this will help the right course of action bubble to the top faster in the future.
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