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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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Replacing NULL with 0 in a SQL server query
...u want to replace a possibly null column with something else, use IsNull.
SELECT ISNULL(myColumn, 0 ) FROM myTable
This will put a 0 in myColumn if it is null in the first place.
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Javascript trick for 'paste as plain text` in execCommand
...
content = window.clipboardData.getData('Text');
document.selection.createRange().pasteHTML(content);
}
});
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Excel Date to String conversion
...ard. It's found under the Data tab in Excel 2007.
If you have one column selected, the defaults for file type and delimiters should work, then it prompts you to change the data format of the column. Choosing text forces it to text format, to make sure that it's not stored as a date.
...
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign
...te definition in the XML and change it manually.
Remove primary keys from select lists in table adapters if they are not related to the data being returned.
Run your query in SQL Management Studio and ensure there are not duplicate records being returned. Duplicate records can generate duplicate p...
Use '=' or LIKE to compare strings in SQL?
...
To see the performance difference, try this:
SELECT count(*)
FROM master..sysobjects as A
JOIN tempdb..sysobjects as B
on A.name = B.name
SELECT count(*)
FROM master..sysobjects as A
JOIN tempdb..sysobjects as B
on A.name LIKE B.name
Comparing strings with '=' is muc...
Visual Studio Disabling Missing XML Comment Warning
...in VS2010):
Sub PragmaWarningDisableForOpenFile()
DTE.ActiveDocument.Selection.StartOfDocument()
DTE.ActiveDocument.Selection.NewLine()
DTE.ActiveDocument.Selection.LineUp()
DTE.ActiveDocument.Selection.Insert("#pragma warning disable 1591")
DTE.ActiveDocument.Selection.EndOfDo...
Add support library to Android Studio project
...oject Structure (Press F4 on PC and Command+; on MAC) on your project).
2.Select Modules on the left pane.
3.Choose your project and you will see Dependencies TAB above the third Column.
4.Click on the plus sign in the bottom. Then a tree-based directory chooser dialog will pop up, navigate to yo...
ReactJS Two components communicating
...te is also increasing in complexity, as we need to
manage active routes, selected tabs, spinners, pagination controls,
and so on.
Managing this ever-changing state is hard. If a model can update
another model, then a view can update a model, which updates another
model, and this, in tur...
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...