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How to use index in select statement?
Lets say in the employee table, I have created an index(idx_name) on the emp_name column of the table.
8 Answers
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ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
... parent table that holds the
central data values, and a child table with identical values pointing
back to its parent. The FOREIGN KEY clause is specified in the child
table.
It will reject any INSERT or UPDATE operation that attempts to create
a foreign key value in a child table if th...
How do I keep jQuery UI Accordion collapsed by default?
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What does “Receiver type 'CALayer' for instance message is a forward declaration” mean here?
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Good way to use table alias in Update statement?
...mValue
FROM dbo.Rates ra
INNER JOIN dbo.Rates rb
ON ra.ResourceID = rb.ResourceID
WHERE ra.PriceSched = 't8'
AND rb.PriceSched = 't9';
This might help in improving performance.
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Can you have a within a ?
...ther inline elements
Span is an inline element, therefore having span inside span is valid.
There's a related question: Can <span> tags have any type of tags inside them? which makes it completely clear.
HTML5 specification (including the most current draft of HTML 5.3 dated November 16, 20...
Error: “The sandbox is not in sync with the Podfile.lock…” after installing RestKit with cocoapods
...
Regarding I.3 - did you mean the 'Build Phases > Link Binary With Libraries' section ?
– kraftydevil
Sep 29 '14 at 21:45
...
sphinx-build fail - autodoc can't import/find module
...cause of the possibility of having tests within docstrings? Can this be avoided (I don't need any package, I just want sphinx to parse docstring to html).
– cglacet
Apr 29 at 11:00
...
What is the zero for string?
... string cannot be nil (but a *string can).
You can simply test
if stringId=="" {
To pass a zero string in stringID, use
k := NewKey(c, "kind", "", 0, p)
From the specification :
When memory is allocated to store a value, either through a
declaration or a call of make or new, and no exp...
Rounding BigDecimal to *always* have two decimal places
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