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Naming convention for unique constraint
...K_Table_ReferencedTable , respectively). The IX_Table_Column naming for indexes is also fairly standard.
3 Answers
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Specifying column name in a “references” migration
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Don't I have to add any index?
– caarlos0
Dec 4 '12 at 1:33
1
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Modifying a subset of rows in a pandas dataframe
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Use .loc for label based indexing:
df.loc[df.A==0, 'B'] = np.nan
The df.A==0 expression creates a boolean series that indexes the rows, 'B' selects the column. You can also use this to transform a subset of a column, e.g.:
df.loc[df.A==0, 'B'] = ...
Rails 3 migrations: Adding reference column?
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remember to add the index with user:integer:index
– rickypai
Dec 1 '12 at 17:40
3
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Remove Identity from a column in a table
...able
Script the table to be created; rename everything e.g. 'MyTable2', 'MyIndex2', etc.
Remove the IDENTITY specification.
You should now have two "identical"-ish tables, one full, the other empty with no IDENTITY.
Run ALTER TABLE [Original] SWITCH TO [Original2]
Now your original table will be emp...
What is an example of the simplest possible Socket.io example?
...r updated small-small for the newer API.
Just because I feel nice today:
index.html
<!doctype html>
<html>
<head>
<script src='/socket.io/socket.io.js'></script>
<script>
var socket = io();
socket.on('welcome', funct...
How to remove an element from an array in Swift
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can we filter only based on index ??
– shaqir saiyed
Mar 14 '19 at 7:47
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Get only part of an Array in Java?
...e only a part of it. I know in Python you can do something like this array[index:] and it returns the array from the index. Is something like this possible in Java.
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How to filter SQL results in a has-many-through relation
...ub_id here.
I named the queries after their author in this thread, with an index where there are two.
I ran all queries a couple of times to populate the cache, then I picked the best of 5 with EXPLAIN ANALYZE.
Relevant indexes (should be the optimum - as long as we lack fore-knowledge which clubs w...
Focus Next Element In Tab Index
...Do not forget the "." class selector prefix in the code below)
var lastTabIndex = 10;
function OnFocusOut()
{
var currentElement = $get(currentElementId); // ID set by OnFOcusIn
var curIndex = currentElement.tabIndex; //get current elements tab index
if(curIndex == lastTabIndex) { //if ...