How can I do a full-text search like containstable or freetexttable on in-memory optimize table SQL Server?
Fulltext indexes are not supported for memory-optimized tables.
https://learn.microsoft.com/en-us/sql/relational-databases/in-memory-oltp/transact-sql-constructs-not-supported-by-in-memory-oltp
Related
I have to migrate SQL Sever 2008 database to the SQL Server 2012. 2008 is the enterprise version and 2012 is standard version. As we know, standard version does not support table partitioning.
The table which is partitioned in the enterprise version has 1 clustered and around 8 non-clustered indexed. I need to drop this partition but do not know how. Can someone please shed little light on how should I go about it?
Thanks.
To unpartition a table, you'll need to recreate all the indexes with a filegroup specification instead of parttion scheme. I suggest you drop all the non-clustered indexes and then rebuild the existing partitioned clustered index using CREATE INDEX...WITH(DROP_EXISTING-ON) with a filegroup specification. Then recreate the non-clustered indexes with a filegroup specfied.
Can we create clustered/non-clustered columnstore index on a memory optimized table in SQL Server 2014?
Columnstore Index is not supported with memory optimized tables.
Nope, you can't create a columnstore index on a memory optimized table, only nonclustered hash and nonclustered indexes are allowed, see here for more details:
Guidelines for Using Indexes on Memory-Optimized Tables
ColumnStore indexes are going to be supported on Top on In-memory/hekaton tables in SQL Server 2016.
There is an option called "ColumnStore Index" available in SQL Server 2012.
Is it comparable with columnar databases such as Cassandra, HBase?
Few advantages of going with SQL Server 2012 can be:
It is Updateable
It is Relational
What other factors can be considered to choose between SQL Server 2012 and other Columnar databases in case faster query performance is a requirement.
I'm not sure what you mean by "it is updatable", but in SQL Server 2012 tables that have a columnstore index cannot be updated. You must first drop the columnstore index or you must partition around the columnstore index in order to support changes to the underlying data.
Also, columnstore indexes are useful in DW systems where very large amounts of data have to be aggregated and accessed quickly.
In SQL Server 2012 you have the alternative of indexed (materialized) views.
I create a fulltext index on a table,I want to have a look at the fulltext data after the population.Is there a file contains fulltext index information? Where is it? Anybody has an idea?
If you are using SQL Server 2008, you can specify a filegroup where the index will be stored. This option isn’t available in SQL Server 2005 because filegroup association is at the catalog level.
That means you can issue a query that lists the contents of the index on SQL Server 2008:
SELECT display_term, column_id, document_count
FROM sys.dm_fts_index_keywords
(DB_ID('AdventureWorks2008'), OBJECT_ID('ProductDocs'))
If you run sp_help_fulltext_columns you will get the Fulltext index tables and columns
in the database.
I found that one of the indexes is slowing my Query...but I can't drop it because it is used else where and it seems it is a good index for that query.
Is there a way in SQL Server 2005+, where I could ignore an index in a Query?