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How do I change the hover over color for a hover over table in Bootstrap?
I have a table with class 'table-hover'. The default hover over color is a white / light grey. How do I change this color?
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Laravel Eloquent Sum of relation's column
... is no price column. It looks like eloquent is not looking at that Product table at all....
– theAdmiral
Feb 10 '14 at 15:22
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How to combine two or more querysets in a Django view?
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If merging querysets from the same table to perform an OR query, and have duplicated rows you can eliminate them with the groupby function: from itertools import groupby unique_results = [rows.next() for (key, rows) in groupby(result_list, key=lambda obj: obj...
How to add JTable in JPanel with null layout?
I want to add JTable into JPanel whose layout is null . JPanel contains other components. I have to add JTable at proper position.
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Does Foreign Key improve query performance?
Suppose I have 2 tables, Products and ProductCategories. Both tables have relationship on CategoryId. And this is the query.
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Is a Python dictionary an example of a hash table?
...looking up "values" of any type. Is this implemented internally as a hash table? If not, what is it?
4 Answers
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Entity Framework Migrations renaming tables and columns
...eign keys with the new column name.
public override void Up()
{
RenameTable("ReportSections", "ReportPages");
RenameTable("ReportSectionGroups", "ReportSections");
RenameColumn("ReportPages", "Group_Id", "Section_Id");
}
public override void Down()
{
RenameColumn("ReportPages", "Se...
SQL “select where not in subquery” returns no results
... query:
LEFT JOIN / IS NULL:
SELECT *
FROM common
LEFT JOIN
table1 t1
ON t1.common_id = common.common_id
WHERE t1.common_id IS NULL
NOT EXISTS:
SELECT *
FROM common
WHERE NOT EXISTS
(
SELECT NULL
FROM table1 t1
WHERE t1.common_id = ...
In Visual Studio C++, what are the memory allocation representations?
...tually quite a bit of useful information added to debug allocations. This table is more complete:
http://www.nobugs.org/developer/win32/debug_crt_heap.html#table
Address Offset After HeapAlloc() After malloc() During free() After HeapFree() Comments
0x00320FD8 -40 0x01090009 0x01090009 ...
Why is require_once so bad to use?
... I doubt your defined() method is any faster than the built-in lookup table, but I agree with your overall point - surely a non-issue?!
– Bobby Jack
Oct 9 '08 at 8:42
1
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