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SQLiteDatabase.query method
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tableColumns
null for all columns as in SELECT * FROM ...
new String[] { "column1", "column2", ... } for specific columns as in SELECT column1, column2 FROM ... - you can also put complex expressions here:
new String[] { "(SELECT max(column1) ...
cartesian product in pandas
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If you have a key that is repeated for each row, then you can produce a cartesian product using merge (like you would in SQL).
from pandas import DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[...
Why is setTimeout(fn, 0) sometimes useful?
...consistently winning this race and attempting to set drop-down selection before the browser was ready, meaning that the bug would appear.
This race existed because JavaScript has a single thread of execution that is shared with page rendering. In effect, running JavaScript blocks the updating of th...
Change Screen Orientation programmatically using a Button
... No it's not like that.. Actually i tested the code in that link before posting.. It was working in my device..
– Hariharan
Aug 16 '13 at 8:36
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Inspect element that only appear when other element is mouse overed/entered
...he triggering element in the dev tools (the link)
Right click, and select "force element state", and select ":hover"
Inspect the CSS tooltip
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How to use count and group by at the same select statement
...ant to count all the records after the group by statement.
Is there a way for this directly from sql?
For example, having a table with users I want to select the different towns and the total number of users
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Entity framework linq query Include() multiple children entities
...ies.CompleteCompanies().FirstOrDefault(c => c.Id == companyID); //same for next advanced method
– Hamid
Mar 28 '16 at 8:28
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Problem with converting int to string in Linq to entities
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With EF v4 you can use SqlFunctions.StringConvert. There is no overload for int so you need to cast to a double or a decimal. Your code ends up looking like this:
var items = from c in contacts
select new ListItem
{
Value = SqlFunctions.StringConvert((dou...
PostgreSQL: How to pass parameters from command line?
..., you can PREPARE statements just like you can in a scripting language. Unfortunately, you still can't use ?, but you can use $n notation.
Using the above example:
PREPARE foo(text,text,text) AS
SELECT *
FROM foobar
WHERE foo = $1
AND bar = $2
OR baz = $3 ;
EXEC...
Use a normal link to submit a form
I want to submit a form. But I am not going the basic way of using a input button with submit type but a a link.
7 Answe...