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Can you do greater than comparison on a date in a Rails 3 search?
... a user_id field. Using the raw SQL notation means you need to include the table clarifications yourself, eg: where("notes.user_id = ?",current_user.id).
– DreadPirateShawn
Jul 13 '14 at 10:03
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Using global variables in a function
... natural place for global data:
Each module has its own private symbol table, which is used as the global symbol table by all functions defined in the module. Thus, the author of a module can use global variables in the module without worrying about accidental clashes with a user’s global vari...
Hibernate - Batch update returned unexpected row count from update: 0 actual row count: 0 expected:
...e the field generator="native" or "incremental" and in your DATABASE the table mapped is not auto_incremented
Solution: Go to your DATABASE and update your table to set auto_increment
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Numpy where function multiple conditions
...u even asking it to get logical AND of, because in the operator precedence table if you see, & is given precedence over < or > operators. Here's the table from from lowest precedence to highest precedence.
It's not even performing the < and > operation and being asked to perform a...
Difference between InvariantCulture and Ordinal string comparison
...se flag matters for all sampled cultures
The code used to generate above table:
var l = new List<string>
{ "0", "9", "A", "Ab", "a", "aB", "aa", "ab", "ss", "ß",
"Ä", "Äb", "ä", "äb", "あ", "ぁ", "ア", "ァ", "Ａ", "亜" };
foreach (var comparer in new[]
{
StringComp...
Can I concatenate multiple MySQL rows into one field?
...ead of a group—and concatenate on a certain field.
Let's say you have a table of product ids and their names and prices:
+------------+--------------------+-------+
| product_id | name | price |
+------------+--------------------+-------+
| 13 | Double Double | 5 |...
How to avoid the “divide by zero” error in SQL?
...1 / NULLIF(CAST(NULL AS INT), 0). In real life, you are going to supply a table column to NULLIF() rather than a NULL constant. Since table columns have known datatypes, this also works fine: SELECT 1 / NULLIF(SomeNullableColumn, 0) FROM SomeTable.
– MarredCheese
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SQL - Select first 10 rows only?
...
In SQL server, use:
select top 10 ...
e.g.
select top 100 * from myTable
select top 100 colA, colB from myTable
In MySQL, use:
select ... order by num desc limit 10
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How do you manually execute SQL commands in Ruby On Rails using NuoDB
...n.execute("foo")
with "foo" being the sql statement( i.e. "SELECT * FROM table").
This command will return a set of values as a hash and put them into the results variable.
So on my rails application_controller.rb I added this:
def execute_statement(sql)
results = ActiveRecord::Base.connectio...
twig: IF with multiple conditions
... And of course I had no chance of finding that wonderful and time-saving table when looking at the IF documentation : twig.sensiolabs.org/doc/tags/if.html Thanks for the solution !
– FMaz008
Dec 5 '11 at 17:01
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