In SQL server you can write
create index indx on T1 (A,B) INCLUDE (C,D,E)
Is there a way to do the same thing in Oracle?
In SQL server you can write create index indx on T1 (A,B) INCLUDE (C,D,E)
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In SQL server you can write
create index indx on T1 (A,B) INCLUDE (C,D,E)
Is there a way to do the same thing in Oracle?
Simply put all the columns in the index:
create index indx on T1 (A,B,C,D,E)If Oracle decides to use your index (e.g., A and B are in the WHERE clause) it will take the values of C, D, and E from the index.
If the columns are very long varchars Oracle may not be able to build the index. This is sometimes called a “covered” index and I’ve used or seen it on more than a few occasions.