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Truncate all tables in a MySQL database in one command?
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Drop (i.e. remove tables)
mysql -Nse 'show tables' DATABASE_NAME | while read table; do mysql -e "drop table $table" DATABASE_NAME; done
Truncate (i.e. empty tables)
mysql -Nse 'show tables' DATABASE_NAME | while read table; do mysql -e "truncate tab...
MySQL: Invalid use of group function
I am using MySQL. Here is my schema:
2 Answers
2
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How to escape % in String.Format?
I am storing a SQL query in my strings.xml file and I want to use String.Format to build the final string in code. The SELECT statement uses a like, something like this:
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Calculate distance between 2 GPS coordinates
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This is very easy to do with geography type in SQL Server 2008.
SELECT geography::Point(lat1, lon1, 4326).STDistance(geography::Point(lat2, lon2, 4326))
-- computes distance in meters using eliptical model, accurate to the mm
4326 is SRID for WGS84 elipsoidal Earth mod...
How to remove all MySQL tables from the command-line without DROP database permissions? [duplicate]
How do I drop all tables in Windows MySQL, using command prompt? The reason I want to do this is that our user has access to the database drops, but no access to re-creating the database itself, for this reason we must drop the tables manually. Is there a way to drop all the tables at once? Bear in ...
How do I find the MySQL my.cnf location
Is there a MySQL command to locate the my.cnf configuration file, similar to how PHP's phpinfo() locates its php.ini ?
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Get encoding of a file in Windows
... you're only looking for "bad encodings" from a known list of tools. (i.e. SQL Management Studio defaults to UTF16, which broke GIT auto-cr-lf for Windows, which was the default for many years.)
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Date format Mapping to JSON Jackson
....util.Date explicitly I want to point out that this does not work for java.sql.Date. See also my answer below.
– brass monkey
Nov 16 '18 at 16:00
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Is a LINQ statement faster than a 'foreach' loop?
...by the simpler to understand code.
With other LINQ providers like LINQ-to-SQL, then since the query can filter at the server it should be much better than a flat foreach, but most likely you wouldn't have done a blanket "select * from foo" anyway, so that isn't necessarily a fair comparison.
Re PL...
When to prefer JSON over XML?
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@sotn You haven't PL/SQL for JSON as have XML (e.g. XQuery). It's base for some NoSQL DB (eXist, MarkLogic Server, EMC Documentum xDB, BaseX, Zorba)
– Dmytro Melnychuk
Apr 23 '17 at 9:17
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