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Finding # occurrences of a character in a string in Ruby
... Ruby method (1.9...) that can help me find the number of occurrences of a character in a string. I'm looking for all occurrences, not just the first one.
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How can I make a JPA OneToOne relation lazy
...y tested it: on non constrained side, use a one-to-one with a formula like select other_entity.id from other_entity where id = other_entity.id. Of course, this is not ideal for query performances.
– Frédéric
Apr 28 '16 at 6:48
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Store select query's output in one array in postgres
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There are two ways. One is to aggregate:
SELECT array_agg(column_name::TEXT)
FROM information.schema.columns
WHERE table_name = 'aean'
The other is to use an array constructor:
SELECT ARRAY(
SELECT column_name
FROM information.schema.columns
WHERE table_name = ...
JQuery: 'Uncaught TypeError: Illegal invocation' at ajax request - several elements
I have two select elements, A and B: when A's selected option changes, B's options must be updated accordingly. Each element in A implies many elements in B, it's a one-to-many relationship (A contains nations, B should contain cities located in the given nation).
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Enter “&” symbol into a text Label in Windows Forms?
How would one enter special characters into a Label in C# (Windows Forms)?
5 Answers
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Checking oracle sid and database name
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I presume SELECT user FROM dual; should give you the current user
and SELECT sys_context('userenv','instance_name') FROM dual; the name of the instance
I believe you can get SID as SELECT sys_context('USERENV', 'SID') FROM DUAL;
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Access denied for user 'root'@'localhost' while attempting to grant privileges. How do I grant privi
...here ...
Now, what's missing then ?
On my system, I get this:
mysql> select version();
+------------+
| version() |
+------------+
| 5.5.21-log |
+------------+
1 row in set (0.00 sec)
mysql> SHOW GRANTS FOR 'root'@'localhost';
+------------------------------------------------------------...
SQL update query using joins
...common table expression (since you're already on SQL 2005):
with cte as (
select
im.itemid
,im.sku as iSku
,gm.SKU as GSKU
,mm.ManufacturerId as ManuId
,mm.ManufacturerName
,im.mf_item_number
,mm.ManufacturerID
, <your other field>
from
item_master im, gro...
How to remove the border highlight on an input text element
When an HTML element is 'focused' (currently selected/tabbed into), many browsers (at least Safari and Chrome) will put a blue border around it.
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What does it mean when a CSS rule is grayed out in Chrome's element inspector?
... because one or more rules from the set are being applied to the currently selected DOM node.
I guess, for the sake of completeness, dev tools shows all the rules from that set, whether they are applied or not.
In the case where a rule is applied to the currently selected element due to inheritance...