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I am trying to convert (per010) SQR into a SQL to run in SQL Developer.
If you are using SQL Developer, that means that you have to work with a single SQL.
If I remember correctly, PER010 is the Turnover report. It would not be possible to turn this report into a single SQL since it pulls elements from multiple tables and multiple passes, for example Hires versus Terminations.
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I'm in a new job using Microsoft SQL Server.
Is there a way to show how all of these tables link together?
Yes of course,
Go to Database > Database Diagrams > New Database Diagram
Then add all the tables.
This diagram shows you all the tables and relationships.
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there is any simple way to know which one of two SQL Store procedure works better?
Click the Include Actual Execution Plan before running both sp (on the same run) and check the percentages
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I know that SQL is different in various databases. But I need to know which functions are predicates in source SQL as language standart (not vendor solutions).
I found:
CONTAINS
EXISTS
IS NULL
IS NOT NULL
Is it all? Or did I lose smth?
Are all predicates use the TVL?
P.S. Sorry if I wrote stupidity, I'm a noobie in the database but I need to know it for exam.
You can refer here:
ANSI SQL Framework
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My question is simple.
Does SQL Server allow Multi table clustering?
No - SQL Server has the concept of clusters in which two or instances of SQL Server (the program) is running (or is available to run) and if one fails the other instance can very rapidly take over. They work on the same data which is stored in a shared drive. But only one is active at a time.
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I know that PostgreSQL is the closest database to full SQL compliance. I am however wondering where postgres does not comply to the standard, and I am unable to find it in their documentation.
What features of SQL does PostgreSQL lack, and what features does it offer outside the SQL standard?
There is Appendix D of the PostgreSQL documentation on SQL standard conformance:
http://www.postgresql.org/docs/9.4/static/features.html
Take a special look at D.2 for unsupported features.