columnstore Questions

4

Solved

I want to create a clustered columnstore index in a table using the following query: CREATE CLUSTERED COLUMNSTORE INDEX cci ON agl_20180319_bck And I am getting this error: Msg 35343, Level 16, S...
Proxy asked 19/3, 2018 at 14:33

1

Solved

I have a data set that I want to place in a clustered column store and optimize it for segment elimination when accessing it by a column called SubjectId which is defined as uniqueidentifier type. ...
Errand asked 31/7, 2024 at 21:5

3

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We are conducting a migration project, and looking to replace most Rowstore indexes with Clustered Columnstore indexes for large Data Warehouse. We are adding a unique index on the identity column....

2

I have a Clustered Columnstore Index Table for our IOT metrics (timeseries data). It contains more than 1 billion rows and structured like this: CREATE TABLE [dbo].[Data]( [DeviceId] [bigint] NOT ...

2

Solved

I need to make some mechanism that checks if a table X is columnstored or not and if it is not to convert it. I am aware that to convert a table X for example to clustered columnstore index we can...
Chaworth asked 12/3, 2018 at 14:40

3

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I have the following database structure, stored in a relational database: Two fact tables with ~80 million rows each Three dimension tables that have between 300,000 - 500,000 rows Both fact tabl...

3

I have a non-clustered columnstore index on all columns a 40m record non-memory optimized table on SQL Server 2016 Enterprise Edition. A query forcing the use of the columnstore index will perfor...

3

Solved

I am confused about the columnstore index. What is a columnstore index, and how it is different from clustered and non-clustered indexes?
Rapier asked 3/10, 2016 at 9:40

1

I'm planning to create a Non-clustered columnstore index on SQL Server 2014. But non clustered column store index is read-only and cannot perform DML operations, we need to disable before insert a...
Agnella asked 11/11, 2016 at 17:49

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I did found few examples in the documentation where primary keys are created by passing parameters to ENGINE section. But I did not found any description about any argument to ENGINE, what it means...
Ethelstan asked 31/7, 2016 at 14:8

4

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I have a table with ~200 million rows and ~15 columns in it. I am planning to create the column store index on my table. Will there be any change in performance based on the order of columns that I...
Goldplate asked 2/4, 2012 at 4:47

2

Reading about clustered column store index in SQL Server 2014, I'm wondering if having a table with a huge number of columns is still an anti-pattern. Currently to alleviate the problem of having a...
Liability asked 4/11, 2013 at 12:25
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