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...in general people do care about the differences between: kitchen:table and sql:table, or between architecture:column, sql:column, array:column, military:column
– Dimitre Novatchev
Aug 1 '18 at 16:14
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Deep null checking, is there a better way?
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It's an idea I derrived from the null coalescing operator in C# and T-SQL. The nice thing is that the return type is always the return type of the inner property.
That way you can do this:
var berries = cake.Coal(x => x.frosting).Coal(x => x.berries);
...or a slight variation of the a...
How to work around the lack of transactions in MongoDB?
...know whether this comes from my limited viewpoint (I have only worked with SQL databases so far), or whether it actually can't be done.
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What is the most ridiculous pessimization you've seen? [closed]
... ad hoc Access connections to the production DB. Nothing like a few casual SQL'ers to forget a WHERE clause and deadlock the main tables!
– HardCode
Mar 28 '09 at 5:09
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Good MapReduce examples [closed]
... values and perform any sort of transformations on these.
For Example In SQL, Given the Date of Birth, to find out How many people are of age > 30 for a million records would take a while, and this would only increase in order of magnitute when the complexity of the query increases.
Map Reduce...
Rails: Default sort order for a rails model?
...efault_scope { order(created_at: :desc) } if, like me, you try to minimize sql syntax in rails.<br/>If you have multiple columns to order by and you want to use the new syntax you may need to wrap the desc columns in mustaches like this default_scope { order({begin_date: :desc}, :name) }
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Is there a software-engineering methodology for functional programming? [closed]
...elational definition of the essential state in clojure without reinventing sql (without its flaws)? Or is the idea to simply use a good relational (sql) DB and built a functional program on top of it without the conceptual mismatch introduced by OOP?
– Thorsten
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What's the false operator in C# good for?
...ample >0 for true, <0 for false and ==0 for null, and then you'd get SQL-style null semantics. You would also have to implement a .IsNull method or property in order that nullity could be checked explicitly.
Comparing to SQL, imagine a table Table with 3 rows with value Foo set to true, 3 ro...
What is Normalisation (or Normalization)?
...y a number. A higher number means fewer redundancies and dependencies. Any SQL table is in 1NF (first normal form, pretty much by definition) Normalizing means changing the schema (often partitioning the tables) in a reversible way, giving a model which is functionally identical, except with less re...
Best way to select random rows PostgreSQL
I want a random selection of rows in PostgreSQL, I tried this:
12 Answers
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