If you have a single column table, do a SELECT DISTINCT into a temp table, truncate your single column table and INSERT the distinct values back from temp table. If user realizes that they need to keep only unique records in the column and if they are willing to create unique constraint, the very first requirement of creating a unique constraint is to delete the duplicate records
If you place several of these arithmetic operators in an expression without any parentheses, the operators are resolved in this order: multiplication, division, modulo, addition, and subtraction. Character Operators You can use character operators to manipulate the way character strings are represented, both in the output of data and in the process of placing conditions on data to be retrieved
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COMMIT - save work done SAVEPOINT - identify a point in a transaction to which you can later roll back ROLLBACK - undo the modification I made since the last COMMIT SET TRANSACTION - Change transaction options like isolation level and what rollback segment to use SET ROLE - set the current active roles DML are not auto-commit. If you include the SAMPLE clause within a multi-table or remote query, you will get a parse error or "ORA-30561: SAMPLE option not allowed in statement with multiple table references"
Since I must treat a response, I have tried the third situation explained in this article, but I get an error in ODI which says that the identifier must be declared. Please feel free if you have any other question Reply Cezar Santos April 29, 2010 at 6:57 AM Hi Jay, Yes, you can handle multiple out parameters by creating multiples functions
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sql-server log-shipping asked 3 hours ago Kris Gruttemeyer 1,284420 2 votes 1answer 19 views TDE restored DB encryption state I've been looking into using TDE in our SQL Server 2014 environment and have a few questions. mysql database-design schema asked 1 hour ago Naterade 1061 2 votes 2answers 15 views Do not reject entire statement when deleting rows in batch I have a table who's purpose is to store the application's various images
This is the fastest, if you have not much constraints on your table If your table is huge, or you dont't have the privelge to create and drop tables, then you may write plsql block to walk through your ordered records, and on all it's fields, and if the record you take is the same as the previous, then delete the later temporary table. No spaces please The Profile Name is already in use Password Notify me of new activity in this group: Real Time Daily Never Keep me informed of the latest: White Papers Newsletter Jobs By clicking "Join Now", you agree to Toolbox for Technology terms of use, and have read and understand our privacy policy
You can find an other sql tutorial titled How to delete duplicate records or rows among identical rows in a table where no primary key exists among Kodyaz SQL articles. ORDER BY ...) to Delete Duplicate Rows in SQL Table If you have duplicate rows in your MS SQL Server database tables, you may want to delete duplicate records
http://javarevisited.blogspot.com/2012/12/how-to-find-second-highest-or-maximum-salary-sql.htmlSecond maximum salary using LIMIT keyword of MYSQL database LIMIT keyword of MySQL database is little bit similar with TOP keyword of SQL Server database and allows to take only certain rows from result set. SELECT TOP 1 salary FROM ( SELECT TOP 3 salary FROM employees ORDER BY salary DESC) AS emp ORDER BY salary ASCIs this correct for 3rd highest salary ?? May 28, 2014 at 5:49 AM Anonymous said..
Summarizing Derived Tables So, how do we fix this? Well, like many SQL problems, the answer is simple: Do it one step at a time, don't try to join all of the tables together and just add SUM() and GROUP BY and DISTINCT almost randomly until things work; break it down logically step by step. It is vital to identify and understand what the virtual primary key of a result set is when you join multiple tables, and to recognize which rows are duplicated or not
Now, once the timing of the contention is known, afterwards, the tool DUMPLOCKLOG can be used to extract the lock contentions which have been recorded since the last TPARESET (These are stored in memory, so a reset will blow all away)
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(in Oracle) 3 Find duplicate values in oracle 0 oracle sql query to return rows by eliminate duplicates 3 SQL Server : find duplicates in a table based on values in a single column 1 How do I display non duplicate values in a table in Oracle? Hot Network Questions How fast does Roche limit disintegration proceed? Why is it standard for a website logo to navigate to the home page? How to get a list of monomials of a polynomial without coefficients? Did J.K
http://javarevisited.blogspot.com/2012/12/how-to-find-duplicate-records-in-table-mysql-query-example.htmlYou can see in first query that it listed Ruby as duplicate record even though both Ruby have different phone number because we only performed group by on name. Can you please write something about DB performance tuning as well as its being repetitvely asked to me and am unable to convince a great deal as I havent really worked on such scenarios December 17, 2012 at 8:07 AM Anonymous said..
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