The insert statement adds a new row or rows in a table in theOracle database. We generally use it after we have created a table in the database. One important point to remember is that while inserting records i
Oracle Solaris Cluster provides two different types of configuration for Oracle Solaris Zones on Oracle Solaris.Oracle Solaris Zones clustersextends the Oracle Solaris Zones model across multiple clustered nodes to a virtual cluster. This feature allows you to protect applications running within the zones...
To enforce uniqueness, SQL Server creates a unique clustered index on the columns where Primary Keys were created out. If there are any existing clustered indexes, SQL Server creates a Unique Non-clustered index on the table for the Primary Key. Let’s see how we Create, Modify, Drop, Disa...
It’s therefore always a good idea to consider whether you really need this DISTINCT operation to take place to get the results that you want to accomplish. The LIKE Operator When you use the LIKE operator in a query, the index isn’t used if the pattern starts with % or _. It will...
How to create an Oracle Solaris Zones cluster on Oracle Solaris 11, install and configure Oracle Grid Infrastructure 11.2.0.3 and Oracle Real Application Clusters (Oracle RAC) 11.2.0.3 in the zone cluster, and create an Oracle Solaris Cluster 4.0 resourc
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source n...
To allow multiple clusters and nonclustered nodes to access the storage device, create initiator groups by using LUN masking. If you are not using multipathing, skip toStep 5. If you are using multipathing, and if any devices that are associated with the volume you created are at anunconfigur...
Each set of values in its columns can only appear once. So you can't have duplicates. It also has a not null constraint. And creates a unique index in the background.To create one, add the organization index clause to the table definition:...
Unique:It causes the system to check the duplicate value in tables. Concurrently:After using this parameter, PostgreSQL will create an index without locking other sessions like (Insert, Update or Delete) on tables. Without using this parameter, PostgreSQL locks the table on write operation. ...
Let us assume we have a non-clustered index on thenamecolumn and half of the table has valuesriand few rows havepalin thenamecolumn. For the first query, SQL Server will use the table scan because half of the table has the same values. But for the second query, it is better to use...