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Best design for a changelog / auditing database table? [closed]
...nd when?
So, in order to be able to answer such questions quickly (using SQL), we ended up having two additional columns in the audit table
object type (or table name)
object ID
That's when design of our audit log really stabilized (for a few years now).
Of course, the last "improvement" would...
Entity Framework - Code First - Can't Store List
... conversions may impact the ability of EF Core to translate expressions to SQL. A warning will be logged for such cases. Removal of these limitations is being considered for a future release." - Would still be nice though.
– Nicola Iarocci
May 8 at 8:34
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Declare variable in table valued function
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Split code over multiple lines in an R script
...ong string where whitespace/structure is important to preserve (example: a SQL query using RODBC) there is a two step solution.
1) Bring the text string in across multiple lines
long_string <- "this
is
a
long
string
with
whitespace"
2) R will introduce a bunch of \n characters. Strip those...
What is the easiest way to ignore a JPA field during persistence?
...em with @Transient to exclude them from SELECT, INSERT, UPDATE, and DELETE SQL statements.
So, for basic attributes, you need to use @Transient in order to exclude a given property from being persisted.
For more details about computed entity attributes, check out this article.
Association...
What can , and be used for?
...eceiver_MB._strID
Use viewParam
In Receiver, we want to use this param in sql query before the page render, so that we use preRenderView event. We are not going to use constructor because constructor will be invoked before viewParam is received
So that we add
Receiver.xhtml
<f:event listener="#...
Entity Framework Code First - two Foreign Keys from same table
... and GuestTeam scenario), in which case EF gets confused in generating the SQL. Solution is to add code to OnModelCreate as per the accepted answer as well as the two collections for both sides of the relationship.
– Steven Manuel
Jun 17 '16 at 2:54
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MySQL Select Query - Get only first 10 characters of a value
...
Using the below line
SELECT LEFT(subject , 10) FROM tbl
MySQL Doc.
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How to get execution time in rails console?
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Should an Enum start with a 0 or a 1?
...abase or something similar). If you're worried abotu space, with the newer SQL server versions you can have a database compressed, which means 1000 occurences of "SomeEnumTextualValue" will use barely any more space. Of course this won't work for all projects - it's a trade off. I think the worry ab...