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T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
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I know this is a very old question and the problem is marked as fixed. However, if someone with a case like mine where the table have trigger for data logging on update events, this will cause problem. Both the columns will get the update and log will make use...
How to compare Lists in Unit Testing
...gave more detailed messages when it failed. "Different number of elements" and "Element at index 0 do not match" are slightly useless. What are they then?!
– Colonel Panic
May 15 '15 at 15:45
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How to avoid “if” chains?
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You can use an && (logic AND):
if (executeStepA() && executeStepB() && executeStepC()){
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}
executeThisFunctionInAnyCase();
this will satisfy both of your requirements:
executeStep<X>() should evaluate only if the pre...
Find integer index of rows with NaN in pandas dataframe
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add .to_numpy() to convert in numpy array first - pd.isnull(df).any(1).to_numpy().nonzero()
– 7bStan
Nov 6 '19 at 7:21
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How do lexical closures work?
.... This is exactly the problem, though - in this environment, i is mutated, and the closures all refer to the same i.
Here is the best solution I can come up with - create a function creater and invoke that instead. This will force different environments for each of the functions created, with a dif...
How does HashSet compare elements for equality?
..., it will find the hash code using IEqualityComparer<T>.GetHashCode, and store both the hash code and the element (after checking whether the element is already in the set, of course).
To look an element up, it will first use the IEqualityComparer<T>.GetHashCode to find the hash code, t...
Count number of rows within each group
... standard nowadays to use .() instead of list() and setDT() to convert a data.frame to data.table. So in one step setDT(df)[, .N, by = .(year, month)].
– sindri_baldur
Sep 27 '19 at 11:33
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How to replace a string in a SQL Server Table Column
...ar/nvarchar like text, we need to cast the column value as string and then convert it as:
update URL_TABLE
set Parameters = REPLACE ( cast(Parameters as varchar(max)), 'india', 'bharat')
where URL_ID='150721_013359670'
sha...
When to use MyISAM and InnoDB? [duplicate]
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For converting from MyISAM to InnoDB, see myisam2innodb blog.
– Rick James
Jun 5 '15 at 4:45
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Is there a C++ decompiler? [closed]
...less for decompilling C++, you just need to know a bit about how compilers convert C++ structures.
– Michael Anderson
Apr 11 '13 at 5:32
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