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How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
...but usually require a little configuration. Always use Unicode strings for SQL queries.
MySQL
In the connection string add:
charset='utf8',
use_unicode=True
E.g.
>>> db = MySQLdb.connect(host="localhost", user='root', passwd='passwd', db='sandbox', use_unicode=True, charset="utf8")
...
Does Parallel.ForEach limit the number of active threads?
...de that failed to set a limit and spawned 200+ threads thereby popping the SQL connection pool.. I recommend setting the Max DOP for any work that cannot be trivially reasoned about as being explicitly CPU bound.)
– user2864740
Apr 11 '17 at 23:31
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What is the best way to prevent session hijacking?
...ou are vulnerable to session fixation, or your session ID storage is weak (SQL injection?), SSL will be no improvement at all.
– Calimo
Jan 22 '12 at 18:15
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Why do I need Transaction in Hibernate for read-only operations?
...actions can be optimized by DBs, but this of course is DB specific. E.g. MySQL added support for this only in InnoDB starting from 5.6.4 version.
If you're not using JDBC directly, but rather an ORM, that might be problematic. For instance Hibernate community says that working outside of transaction...
SET versus SELECT when assigning variables?
...es between the SET and SELECT statements when assigning variables in T-SQL?
4 Answers
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What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?
When creating a table in SQLite3, I get confused when confronted with all the possible datatypes which imply similar contents, so could anyone tell me the difference between the following data-types?
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How can you program if you're blind?
...platform and visual studio as my environment. I also use tools like the MS Sql enterprise studio and others for DB access, network monitoring etc.
I tried to spend some time with emacspeak but since my work was mostly based on the MS platform, never really spent a lot of time there.
I have also spen...
What's the difference between an inverted index and a plain old index?
...inverted" even if it is just what everybody thinks of a "normal index". A SQL b-tree index stores for each word a pointer to all rows ("documents") containing it. There we call it "index". But in search engines we suddenly call this exact same procedure "inverted index". Not because it's fundamenta...
How to encrypt/decrypt data in php?
...ARY.
The output value, like the IV, is binary; to store those values in MySQL, consider using BINARY or VARBINARY columns. If this is not an option, you can also convert the binary data into a textual representation using base64_encode() or bin2hex(), doing so requires between 33% to 100% more stor...
Can dplyr package be used for conditional mutating?
...
case_when is now a pretty clean implementation of the SQL-style case when:
structure(list(a = c(1, 3, 4, 6, 3, 2, 5, 1), b = c(1, 3, 4,
2, 6, 7, 2, 6), c = c(6, 3, 6, 5, 3, 6, 5, 3), d = c(6, 2, 4,
5, 3, 7, 2, 6), e = c(1, 2, 4, 5, 6, 7, 6, 3), f = c(2, 3, 4,
2, 2, 7, 5, 2))...