SQL-Bits.com @sql_bits
We give you quick SQL recipes on Twitter and on SQL-Bits dot com. Because SQL matters! sql-bits.com Joined July 2021-
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MariaDB and MySQL don't use indexes for regular expressions, even when they theoretically could. But in some cases you can solve the problem with this optimisation, that I call "REGEXP AND LIKE". vettabase.com/mariadb-the-re…
What's new in @mariadb's latest Long-Term Support release? We have selected a list of most interesting features and explained them all for you! Read the new post by our Founder @FedericoRazzol1 covering the recent MariaDB LTS release: vettabase.com/mariadb-10-11-… #MariaDB #database
In #SQL, this can’t use a regular index: WHERE DATE_PART(YEAR, date) = '2021'. This is an equivalent expression that can use a suitable index, if it exists: WHERE date BETWEEN '2021-01-01' AND '2021-12-31'. #database #Vettabase #VettabaseWeeklyTips
🗓 Get ready for the first edition of #datacomconf2022! 💬Meet the data infrastructure and platform community on 3 November in #Bern!
💬 Be part of this years #OracleBeerBern meets #tvdpdays! Meet the performance experts for the Q&A session on Wednesday afternoon! ⁉️ Register now! 🖊 meetup.com/de-DE/oracle-b… #SwissOUC
Storing filenames, urls or alphanumeric codes in #MariaDB/#MySQL? Consider storing them with #ascii charset and ascii_bin collation. This makes searches faster and physical tables smaller. #database #opensource #DBMS #Vettabase #VettabaseWeeklyTips
“Don’t use an #RDBMS as a cache” - yet another rule that we shouldn’t follow strictly. #Caching the results of a query in a table means that we can join it to other data, use a stricter WHERE or a different ORDER BY at a low cost. #database #Vettabase #VettabaseWeeklyTips
"Data Concurrency and Consistency" In a single-user database, a user can modify data without concern for other users modifying the same data at the same time. However, in a multiuser database, statements within multiple simultaneous transactions may update the same data 1/2
Do you know how to use GROUP BY to group results by *ranges* of values? #SQL sql-bits.com/group-rows-by-…
We can write very advanced #SQL queries just by nesting GROUP BYs. Check this example & explanation! sql-bits.com/groups-of-grou…
Do you know what #PostgreSQL autovacuum is, and how to tune it? Check this article from @kwaku_mikey! vettabase.com/blog/tuning-po…
The idea is amazing, it should seriously reduce resources used for data centres powering and water treatment. These guys are great. theregister.com/2022/04/02/dat…
Here are some creative uses of the LIKE operator. Maybe you won't use them often or at all, but it's good to know them. sql-bits.com/non-trivial-us…
How to work with IDENTITY columns in #Db2: sql-bits.com/db2-creating-i…
How to copy tables in #MySQL and #MariaDB. sql-bits.com/copying-tables…
#SQLServer: Understanding the differences between CHECKSUM(), CHECKSUM_BINARY(), HASHBYTES() sql-bits.com/sql-server-che…
#SQLServer: Learn how to count the occurrences if a substring in a string sql-bits.com/sql-server-how…
Learn how to find values above the average in #SQL. sql-bits.com/find-values-ab…
MariaDB.org: FOSDEM22 MariaDB devroom talks mariadb.org/fosdem22-maria…
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