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“Insert if not exists” statement in SQLite
... and text you should be able to do like this:
INSERT INTO memos(id,text)
SELECT 5, 'text to insert'
WHERE NOT EXISTS(SELECT 1 FROM memos WHERE id = 5 AND text = 'text to insert');
If a record already contains a row where text is equal to 'text to insert' and id is equal to 5, then the insert op...
How to do a regular expression replace in MySQL?
...ositions and perform substring substitution and extraction, respectively.
SELECT REGEXP_REPLACE('Stackoverflow','[A-Zf]','-',1,0,'c');
-- Output:
-tackover-low
DBFiddle Demo
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Android Studio Editor Font Sizing
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In MacBook Android Studio ->
Select Preferences... ->
Click on Save As.. ->Give any name -> OK -> then select Scheme -> and you given name every option Editable
s...
Cannot use a CONTAINS or FREETEXT predicate on table or indexed view because it is not full-text ind
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use AdventureWorks
create fulltext catalog FullTextCatalog as default
select *
from sys.fulltext_catalogs
Create full-text search index.
create fulltext index on Production.ProductDescription(Description)
key index PK_ProductDescription_ProductDescriptionID
Before you create the index, m...
How to change the Eclipse default workspace?
...down>Workspaces.
There you can set a flag to make Eclipse prompt you to select a workspace at startup by checking the "Prompt for workspace at startup" checkbox.
You can set the number of previous workspaces to remember also. Finally there is a list of recent workspaces. If you just remove all b...
How to get the max of two values in MySQL?
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Use GREATEST()
E.g.:
SELECT GREATEST(2,1);
Note: Whenever if any single value contains null at that time this function always returns null (Thanks to user @sanghavi7)
s...
Can you use an alias in the WHERE clause in mysql?
...ts an unknown column. Is there any way to get around this issue? I need to select records that have a rating higher than x. Rating is calculated as the following alias:
...
Focus Next Element In Tab Index
...st of all, on your tab-able elements, add class="tabable" this will let us select them later.
(Do not forget the "." class selector prefix in the code below)
var lastTabIndex = 10;
function OnFocusOut()
{
var currentElement = $get(currentElementId); // ID set by OnFOcusIn
var curIndex = cur...
Get full path of the files in PowerShell
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Add | select FullName to the end of your line above. If you need to actually do something with that afterwards, you might have to pipe it into a foreach loop, like so:
get-childitem "C:\windows\System32" -recurse | where {$_.exte...
MySQL: Transactions vs Locking Tables
...ransactions vs locking tables to ensure database integrity and make sure a SELECT and UPDATE remain in sync and no other connection interferes with it. I need to:
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