I\'ve got these three here columns on a table: year, pid (integer), and code (varchar). Want to index each one. Which is better (I\'m using postgres, but I\'m curio开发者_运维技巧us about systems in g
Simple intro: I have a database with users and groups. Every user might be a member of one or more groups.
I have a table as follows in Postgres SQL 8.4: 1| John Smith | 2011-08-12 12:44:13.125+08 2| John Smith | 2011-08-16 08:38:57.968+08
What I want to is to make statistics on a table and for this I\'m using generate_series(); Here is what I\'m doing:
I am new to postgres and DW, and I have to design a DATE Dimension as given in book. I saw many places on the web and I did not succeed so far, can some explain how to populate fields like \'Fiscal We
I have a query that really isn\'t that complicated. Its taking close to 250ms to run, which is pretty slow. I\'ve analyzed the query using EXPLAIN and noticed a seq scan. I have the proper indexes in
I\'ve a problem with LIKE operator in PostgreSQL. It does not match patterns that contain the - character. I\'ve tried to escape these characters using the ESCAPE option, but it still does not work.
I have a JPA entity class (one of many) and I can run JPQL queries on it, returning that entity without any problem. However, when I attempt to run any named native query that selects all the fields o
I am trying to use a postgresql database for my rails app. I followed the tutorials provided in this link:
I currently want to extract a value from a SQL command responde somehting like this: psql db -c \"SELECT COUNT(test) FROM tbTest;\"
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