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Is the SQL WHERE clause short-circuit evaluated?
...on algorithm that takes into account a lot of things (indexes, statistics, table size, resources, etc) to come up with an effective execution plan. After this evaluation, you can't say for sure that your short circuit logic is guaranteed.
I ran into the same question myself sometime ago and my res...
Insert Update stored proc on SQL Server
...in the case mentioned above we are removing one
additional read from the table if we
use the UPSERT instead of EXISTS.
Unfortunately for an Insert, both the
UPSERT and IF EXISTS methods use the
same number of reads on the table.
Therefore the check for existence
should only be done whe...
SQL Server: Maximum character length of object names
...
Yes, it is 128, except for temp tables, whose names can only be up to 116 character long.
It is perfectly explained here.
And the verification can be easily made with the following script contained in the blog post before:
DECLARE @i NVARCHAR(800)
SELECT ...
Pure virtual function with implementation
...ual methods inside the constructor). I guess it has to do with the virtual table coherency, which might not be prepared to route to the body of the correct implementation.
– teodron
May 18 '17 at 7:47
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How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...have changed (redirects to finance.yahoo.com/q) and no longer contains the table the XPath suggests.
– richardr
May 4 '14 at 0:14
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Entity Framework Code First - Advantages and disadvantages of Fluent Api vs Data Annotations [closed
.....)
Specification of inheritance mapping between object model and database tables (Table-Per-Hierarchy, Table-Per-Type, Table-Per-Concrete-Class):
.Map<TDerived>(Action<EntityMappingConfiguration<TDerived>> ...)
Edit: Microsoft considers the Fluent API as an "advanced feature" (...
Why switch is faster than if
...h switch the JVM loads the value to compare and iterates through the value table to find a match, which is faster in most cases.
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What's the difference between CSS classes .foo.bar (without space) and .foo .bar (with space) [dupli
...t">.
In general, each part of a selector applies to one HTML element.
table[border].clname means a table with a border attribute and a class of clname, while table [border] .clname means an element with class clname, in an element with a border attribute, in a table.
(Edit: well, I say "one HT...
Using a .php file to generate a MySQL dump
... or less are auto-explicative:
$dumpSettingsDefault = array(
'include-tables' => array(),
'exclude-tables' => array(),
'compress' => 'None',
'no-data' => false,
'add-drop-database' => false,
'add-drop-table' => false,
'single-transaction' => true,
...
How to use DISTINCT and ORDER BY in same SELECT statement?
..., such as Order, event, etc. so if you have (for example) a column in your table called Event you can write [Event] instead of Event to stop SQL throwing a parse error.
– Ben Maxfield
Oct 24 '16 at 21:26
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