You should post these to /r/learnsql instead. Note /r/SQL does not allow links to basic tutorials to be posted here. Please view the Wiki for online resources. Learning SQLĪ common question is how to learn SQL. SELECT count(a.field1), a.field2, SUM(b.field4) FROM a INNER JOIN b ON a.key1 = b.key1 WHERE a.field8 = 'test' GROUP by a.field1, a.field2 HAVING SUM(b.field4) > 5 ORDER by a.field.3įor those with SQL questions we recommend using SQLFiddle to provide a useful development and testing environment for those who wish to fully understand your problem and help devise a solution. Something as simple as line breaks and using reddit's built in code formatting (4 spaces at the start of each line) can turn this: This will greatly increase your chances of receiving the help you desire. If you are including actual code in a post or comment, please attempt to format it in a way that is readable for other users. We will gladly help where we can as long as you post the work you have already done or show that you have attempted to figure it out on your own. If you are a student or just looking for help on your code please do not just post your questions and expect the community to do all the work for you. While naturally we should endeavor to work as platform neutrally as possible many questions and answers require tailoring to the feature set of a specific platform. Implemented features for the main site and internal applications using TypeScript, React, Redux, Python, and SQLAlchemy. When requesting help or asking questions please prefix your title with the SQL variant/platform you are using within square brackets like so: There's nothing "complete" about this kind of comparison.The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions. ago Edited 4 days ago I could probably rant for hours on this subject. Thanks 10 16 comments Best Add a Comment mwdb 4 yr. The "Postgres or MySQL" table seems like a place where claims go to wonder about themselves in a four-day silence retreat. Postgres vs MySQL Hi, Can someone please explain to me the functional differences between the Postgres and MySQL database systems As I understand it, the SQL query syntax is the same for both Postgres and MySQL. This database can process 1.68M tpmC with 140,000 warehouses, which results in an efficiency score of 95. Focuses on speed rather than on fulfilling SQL standards. CockroachDB publishes its performance metrics. An open source and a paid commercial edition. Lots of the claims are dubious, and subjective at based. Below is a brief comparison table between MySQL and PostgreSQL. I also think leaving platform out of the discussion is a big mistake. Or the quirky behaviour is somehow justified, but quite a surprise compared to other implementations or textbooks. But PostgreSQL won the Most Loved and Wanted database in the survey. And both are top databases in the 2022 Stackoverflow Survey with MySQL as 1 and PostgreSQL as 2. MySQL has several behaviour bombs like this, where something is syntactically supported but not semantically supported. Both PostgreSQL and MySQL belong to the top 5 databases in DB-Engines ranking as of August 2022. Postgres doesn't." And it shouldn't, if you ask me. PostgreSQL supports more advanced queries, it performs better on complicated queries, but is harder to manage. "MySQL allows to include non-aggregated columns in a SELECT that uses the GROUP BY clause. As of writing of this post, Diesel supports MySQL, Postgres and SQLite. Getting MySQL to be case-insensitive on a case-sensitive file system is a real pain in the ass. 1 Operating System macOS Sierra diesel: postgres dieselcodegen: postgres. The summary claims that "MySQL is case-insensitive by default." Of course, this isn't true - case sensitivity for identifiers depends on the OS and filesystem where MySQL has been installed. There's no objective substantiation of this claim. The article also claims that MySQL "has an easier learning curve". But the article concludes with "MySQL has. The social network Mastodon uses Postgres. The stats from the SO survey in this very article say that MySQL is less popular than PostgreSQL. Well-known companies that use Postgres are Apple, Spotify, Instagram, and Reddit. More seriously, this summary itself is quite flawed: 17 Open-source Free Database Backup Solutions for MySQL, MongoDB, MSSQL, and PostgreSQL. Let me save you some time: MySQL is garbage, and PostgreSQL spanks it with its pants down.
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