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Should I commit or rollback a read transaction?
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Suppose I create a temp table, populate it with ids, join it with a data table to select the data that goes with the ids, then delete the temp table. I'm really just reading data, and I don't care what happens to the temp table, since it's temporar...
How do I list all cron jobs for all users?
... by hour and minute, insert the
# header line, and format the results as a table.
cat "${temp}" |
sed --regexp-extended "s/^(\S+) +(\S+) +(\S+) +(\S+) +(\S+) +(\S+) +(.*)$/\1\t\2\t\3\t\4\t\5\t\6\t\7/" |
sort --numeric-sort --field-separator="${tab}" --key=2,1 |
sed "1i\mi\th\td\tm\tw\tus...
Is storing a delimited list in a database column really that bad?
...m in a comma separated list of values stored in one column of the database table.
10 Answers
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How does Go compile so quickly?
...ded to be fast: it should take at most a few seconds to build a large executable on a single computer. To meet these goals required addressing a number of linguistic issues: an expressive but lightweight type system; concurrency and garbage collection; rigid dependency specification; and so on. FAQ
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Hidden Features of SQL Server
...T clause allows to do this very easily - it allows access to the "virtual" tables called inserted and deleted (like in triggers):
DELETE FROM (table)
OUTPUT deleted.ID, deleted.Description
WHERE (condition)
If you're inserting values into a table which has an INT IDENTITY primary key field, with ...
What is the difference between up-casting and down-casting with respect to class variable
...that method is declared as final or static.(Explanation Belongs to Virtual Tables Concept)
Virtual Table / Dispatch Table : An object's dispatch table will contain the addresses of the object's dynamically bound methods. Method calls are performed by fetching the method's address from the object's ...
PadLeft function in T-SQL
I have the following table A:
17 Answers
17
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How to assign from a function which returns more than one value?
...it a lot more now than when I originally posted this answer since the data.table package uses the := operator mucho in a much handier way :-)
– Steve Lianoglou
Mar 12 '13 at 0:58
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How do I connect to a MySQL Database in Python?
... = db.cursor()
# Use all the SQL you like
cur.execute("SELECT * FROM YOUR_TABLE_NAME")
# print all the first cell of all the rows
for row in cur.fetchall():
print row[0]
db.close()
Of course, there are thousand of possibilities and options; this is a very basic example. You will have to loo...
What is the difference between ELF files and bin files?
...to be loaded at a specific memory address. Whereas....
ELF files are Executable Linkable Format which consists of a symbol look-ups and relocatable table, that is, it can be loaded at any memory address by the kernel and automatically, all symbols used, are adjusted to the offset from that memory a...