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How do I specify unique constraint for multiple columns in MySQL?
... For those people using MySQL workbench: go to the Indexes tab and select UNIQUE as your type. Give your index a name and check the appropriate columns under the section "Index Columns"
– Pakman
Jun 3 '13 at 20:42
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How to find reason of failed Build without any error or warning
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Build + Intellisense swallowed the error messages.
Selecting Build Only displayed them.
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Autocompletion in Vim
...options for completion of a word, and automatically competes the word upon selection of an option.
– CJBS
Oct 27 '15 at 21:06
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How can I list all the deleted files in a Git repository?
... for me in PowerShell:
git log --find-renames --diff-filter=D --summary | Select-String -Pattern "delete mode" | sort -u > deletions.txt
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How to randomize (or permute) a dataframe rowwise and columnwise?
...ple(1:n()))
or
df2 <- sample_frac(df1, 1L)
column-wise:
df2 <- select(df1, one_of(sample(names(df1))))
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SQLAlchemy - Getting a list of tables
...te_engine('postgresql+psycopg2://root:password@localhost/
q = eng.execute('SELECT * FROM pg_catalog.pg_tables')
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How to output numbers with leading zeros in JavaScript [duplicate]
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When you post code select it and click on the {} button so it gets formatted as such.
– Shef
Sep 12 '11 at 12:05
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How to remove constraints from my MySQL table?
...an show the names of the foreign keys by using this query, as shown here:
SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE REFERENCED_TABLE_SCHEMA = '<database>' AND REFERENCED_TABLE_NAME = '<table>';
Then remove the foreign key by running the before mentioned DR...
heroku - how to see all the logs
...o do from your GUI so you have to logged into your heroku account and then select your application and finally click on view logs
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Windows path in Python
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however best practice is to use the os.path module functions that always select the correct configuration for your OS:
os.path.join(mydir, myfile)
From python 3.4 you can also use the pathlib module. This is equivelent to the above:
pathlib.Path(mydir, myfile)
or
pathlib.Path(mydir) / myfil...