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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
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– leonbloy
May 16 '16 at 14:10
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How can I get all constants of a type by reflection?
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answered Jan 12 '17 at 16:16
BCABCA
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Mean per group in a data.frame [duplicate]
...egate(d[, 3:4], list(d$Name), mean)
Group.1 Rate1 Rate2
1 Aira 16.33333 47.00000
2 Ben 31.33333 50.33333
3 Cat 44.66667 54.00000
Here we aggregate columns 3 and 4 of data.frame d, grouping by d$Name, and applying the mean function.
Or, using a formula interface:
aggregate(....
django 1.5 - How to use variables inside static tag
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edited Apr 26 '14 at 20:16
Barney Szabolcs
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How to show full object in Chrome console?
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edited Jul 5 '16 at 7:43
Mosh Feu
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What does “Content-type: application/json; charset=utf-8” really mean?
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deceze♦deceze
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Import CSV to mysql table
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edited Jun 16 '14 at 21:51
answered Jun 18 '12 at 6:38
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What is “String args[]”? parameter in main method Java
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how to get GET and POST variables with JQuery?
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answered Jan 13 '09 at 16:08
Ates GoralAtes Goral
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Git asks for username every time I push
...r ZhugastrovAlexander Zhugastrov
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