What is the equivalent of: …in SQL Server 2005? Answer Recommended: This is another alternative, but it’s risky because of casting to a FLOAT. It’s also been demonstrated to not scale performance as well as the DATEADD/DATEDIFF approach.
Tag: oracle
Insert if not exists Oracle
I need to be able to run an Oracle query which goes to insert a number of rows, but it also checks to see if a primary key exists and if it does, then it skips that insert. Something like: Is this at all possible with Oracle? Bonus points if you can tell me how to do this in PostgreSQL
Why use a JOIN clause versus a WHERE condition?
I develop against Oracle databases. When I need to manually write (not use an ORM like hibernate), I use a WHERE condition instead of a JOIN. for example (this is simplistic just to illustrate the style): I learned this style from an OLD oracle DBA. I have since learned that this is not standard SQL syntax. Other than being non-standard
How can I select records ONLY from yesterday?
I’ve spent hours searching the web for an answer to this question… Here’s what I currently have: select * from order_header oh where tran_date = sysdate-1
SELECT SUM as field
Suppose i have this table table (a,b,c,d). Datatypes are not important. I want to do this select a as a1,b as b1,c as c1, (select sum(d) from table where a=a1 and b=b1) as total from table …
Oracle SQL escape character (for a ‘&’)
While attempting to execute SQL insert statements using Oracle SQL Developer I keep generating an “Enter substitution value” prompt: I’ve tried escaping the special character in the query using the ” above but I still can’t avoid the ampersand, ‘&’, causing a string substitution. Answer the & is the default value for DEFINE, which allows you to use substitution variables.
Deferrable Constraints in SQL Server
Do any versions of SQL Server support deferrable constraints (DC)? Since about version 8.0, Oracle has supported deferrable constraints – constraints that are only evaluated when you commit a …
What SQL would I need to use to list all the stored procedures on an Oracle database?
What SQL would I need to use to list all the stored procedures on an Oracle database? If possible I’d like two queries: list all stored procedures by name list the code of a stored procedure, given …
How to execute an .SQL script file using c#
I’m sure this question has been answered already, however I was unable to find an answer using the search tool. Using c# I’d like to run a .sql file. The sql file contains multiple sql statements, some of which are broken over multiple lines. I tried reading in the file and tried executing the file using ODP.NET … however I
How do I spool to a CSV formatted file using SQLPLUS?
I want to extract some queries to a CSV output format. Unfortunately, I can’t use any fancy SQL client or any language to do it. I must use SQLPLUS. How do I do it?