I am currently part of a team designing a site that will potentially have thousands of users who will be doing a number of date related searches. During the design phase we have been trying to determi
Problem 72 child tables, each having a year index and a station index, are defined as follows: CREATE TABLE climate.measurement_12_013
We are trying to optimize some of our queries. One query is doing the following: SELECT t.TaskID, t.Name as Task, \'\' as Tracker, t.ClientID, (<complex subquery>) Date,
I was wondering if adding a LIMIT 1 to a query would speed up the processing? For example... I have a query that will most of the time return 1 result, but will occasionally r开发者_StackOverflow社区e
I have two very large enterprise tables in an Oracle 10g database. One table keeps the historical information of the other table. The problem is, I\'m getting to the point where the records are just t
I\'m running the following query: SELECT * FROM all_tab_cols c LEFT JOIN all_varrays v ON c.owner = v.owner
SQL Server doesn\'t allow creating an view with schema binding where the view query uses OpenQuer开发者_StackOverflow社区y as shown below.
I\'ve got a table (col1, col2, ...) with an index on (col1, col2, ...). The table has got millions of rows in it, and I want to run a query:
One thing I always wonder while writing query is that am I writing most optimized query or not? I know certain things like:
Hey guys, trying to optimize this query to solve a duplicate user issue: SELECT userid, \'ismaster\' AS name, \'false\' AS propvalue FROM user
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