I had previously spent a lot of my web dev career building web apps and going with the idea that we need fast queries because the user experience is affected by it. So I guess I've been conditioned to always feel like queries that take more than a couple seconds need to be examined. But now I'm dealing with much bigger datasets as part of a data warehouse, and these queries don't affect the user experience. At first, I was worried that these queries take some time. But we're talking about tens or hundreds of millions of records that are queried and potentially aggregated, depending on the use ..read more

Hi guys, 'm looking for specific information on some OVHcloud settings. Let me start by saying that I have never used OVH. I have to work on the design of a site hosted on ovh and as per routine I first of all backup the database mysql and the site files, but when accessing the database by clicking on access via phpmyadmin, it asks for the access credentials. 1. Is there any way I can find this password somewhere on OVH (avoiding compromising the database password) without disturbing the customer or do I necessarily have to ask for it? 2. Changing the password from there (see screenshot https ..read more

Anyone have any idea where to start with this? I received a file, let’s call it database.tar.gz Extracting that file, there are about 4000 files in the extracted folder that appear to represent scripts and data/tables. But each of these files is a .sql.gz file. There is also a metadata file with the dump start and end time. I’ve never seen a mysqldump export look like this. Does this type of export/dump sound familiar to anyone? I need to rebuild this database pretty quickly and wanted to know how it may have been exported so I can reverse the process. Thanks. submitted by /u/sc816 [visit re ..read more

submitted by /u/Fair_Mammoth_6224 [visit reddit] [comments ..read more

I want to start learning SQL and Python. So what to start and how ? I have a experience of 4 years in operations and management. Online Class Recorded Class One to one Offline Coaching YouTube Any suggestions Thanks in advance! submitted by /u/SecretTadpole7120 [visit reddit] [comments ..read more

Hello chat , I have in mysql a table with the following fields : id , bandId, freq, lvl, bw, pass and timestamp , and I want to create an CTE where should keep all my rows but where bandId it is equal and pass is equal , and diference between two frequencys it is lower 10k , in the row of grater frequency to display the value of lower frequency but al the other fileds from that row to remain unchanged. Until now I don't found a solution to this problem, submitted by /u/Wild-Evidence5961 [visit reddit] [comments ..read more

Has anybody tried/used a solution which can give Materilised view capability for MySQL. I do know that Oracle used to have it and discouraged due to performance overheads. MySQL natively dont support MVs and ppl suggest implementing own. I am worried that implementaion cna be come buggy if there are different Where clause conditions that result in storage of multiple result-sets inefficiently submitted by /u/TopTransportation484 [visit reddit] [comments ..read more

Just got hosting at HostGator. The MySql Database says that it is 8.1.27. I need to set up user logins for this website I am going to start building. So anyway, SELECT Password('Qwerty123') FROM DUAL; This works, but I get the message that "Warning: #1681 'PASSWORD' is deprecated and will be removed in a future release." I tried bcrypt.hash, but, apparently either is either not installed or not available. What can I use instead? submitted by /u/PatBrownDown [visit reddit] [comments ..read more

Hi All, I'm running to an issue for my query that sometime returns a null value. Not sure if this a bug or it's something that I could fix myself. Bellow is a function which is very simple, it takes in an account_id and just return it. In the select statement, I can see the account number but sometime the get_test() function just return a null value. -- Function CREATE FUNCTION get_test( _account_id SMALLINT UNSIGNED ) RETURNS SMALLINT UNSIGNED DETERMINISTIC BEGIN RETURN _account_id; END// -- Stored Procedure CREATE PROCEDURE check_post_document() BEGIN SELECT get_test(dl.account_id), -- ret ..read more

I set up a db link from Oracle to MySQL using orbs and oracle gateway. Has anyone done this. Looking for some clarification on a few things, like Do I really need a different db link for each MySQL schema, why do some columns show and others don’t and some randomly odd Error messages Thanks submitted by /u/Beautiful_Resist_655 [visit reddit] [comments ..read more