Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
Now a days enterprises run databases of hundred of Gigabytes in size. These databases are known as Very Large Databases (VLDB). From Oracle Ver. 8.0 Oracle has provided the feature of table partitioning i.e. you can partition a table according to some criteria . For example you have a SAL...
http://stackoverflow.com/questions/11296361/how-to-create-id-with-auto-increment-on-oracle There is no such thing as "auto_increment" or "identity" columns in Oracle. However, you can model it easily with a sequence and a trigger: Table definition: CREATE TABLE departments ( ID NUMBER(10)...
CREATE PROCEDURE `seq_reset`(v_seq_name varchar(30)) NOT DETERMINISTIC SQL SECURITY DEFINER COMMENT '' BEGIN update seqs set curval=start,flag='A' where seq_name=v_seq_name; END; Subject Views Written By Posted How to generate sequence in MySql ...
Let's call itdbo.Number.SQL Server 2008 can't create sequences, Sequence objects apply to SQL...
Before Oracle 12c, we don’t have a direct method of generating an AUTO_INCREMENT column in a table. We need to use the combination of Sequences and
This will be normal as there are drop sequence and drop table commands in the script. You can ignore these errors. Any other errors indicate a problem has occurred. Create an HTML DB Application Next, you will need to create an HTML DB Application where you can build a form to upload ...
A good construction schedule defines the three crucial Ws in project controls: “What” activities and tasks need to happen? “When” covers not only how long those activities should take, but also the sequence or workflow. “Who” is all about the people required to complete the job, ...
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I am not able to create a sequence in MYSQL 5.0 Want help on creating the same. Basically, what I am looking for is, that I should get a number greater that the last one on every call to this sequence. In Oracle, one can simply write something like:- ...