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Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT
I am fairly new to MySQL and I am getting a pretty interesting error on which I cannot find any help via google and the stackoverflow search.
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What does java:comp/env/ do?
... lookup using "java:comp/env/foo". Have a look at blog.cherouvim.com/javax-sql-datasource-exposed-through-jndi
– cherouvim
Nov 5 '10 at 7:57
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How do I print the full value of a long string in gdb?
...r_string. The output might be a bit harder to read. For example printing a SQL query results in:
(gdb) x/300sb stmt.c_str()
0x9cd948: "SELECT article.r"...
0x9cd958: "owid FROM articl"...
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How do I insert datetime value into a SQLite database?
I am trying to insert a datetime value into a SQLite database. It seems to be sucsessful but when I try to retrieve the value there is an error:
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Right query to get the current number of connections in a PostgreSQL DB
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Note that when the postgres command line tool, PSQL is used for executing this query, the total number of connections is the result of this query - 1 since the psql connection made is also included as a connection
– neonidian
Dec 13 '...
How to 'insert if not exists' in MySQL?
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use INSERT IGNORE INTO table
see http://bogdan.org.ua/2007/10/18/mysql-insert-if-not-exists-syntax.html
there's also INSERT … ON DUPLICATE KEY UPDATE syntax, you can find explanations on dev.mysql.com
Post from bogdan.org.ua according to Google's webcache:
18th October 2007
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Does the order of LINQ functions matter?
...WHERE clause first) for LINQ-to-XML, but faster the first time for LINQ-to-SQL.
To find out precisely what the performance difference is, you'll most likely want to profile your application. As ever with such things, though, premature optimisation is not usually worth the effort -- you may well fin...
PostgreSQL wildcard LIKE for any of a list of words
I have a simple list of ~25 words. I have a varchar field in PostgreSQL, let's say that list is ['foo', 'bar', 'baz'] . I want to find any row in my table that has any of those words. This will work, but I'd like something more elegant.
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Rails “validates_uniqueness_of” Case Sensitivity
Here is the model (I am using SQLLite3):
4 Answers
4
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Search for “does-not-contain” on a DataFrame in pandas
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Perfect! I'm SQL-familiar with regex and thought it was different in Python - saw a lot of articles with re.complies and told myself I'd get to that later. Looks like I overfit the search and it's just as you say : )
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