# Segment, Column, and Merge Status

This section includes information schema views that contain information about the way data is stored and organized within a cluster.

## In this section

* [COLUMNAR\_SEGMENTS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/columnar-segments.md)
* [IND\_CS\_PARTITION\_ROW\_SEGMENT\_GROUPS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/ind-cs-partition-row-segment-groups.md)
* [JSON\_COLUMN\_SCHEMA](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/json-column-schema.md)
* [KEY\_COLUMN\_USAGE](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/key-column-usage.md)
* [LMV\_COLUMNSTORE\_ACTIVE\_MERGE\_PLANS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/lmv-columnstore-active-merge-plans.md)
* [MV\_COLUMNAR\_SEGMENT\_INDEX](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/mv-columnar-segment-index.md)
* [MV\_COLUMNSTORE\_ACTIVE\_MERGE\_PLANS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/mv-columnstore-active-merge-plans.md)
* [MV\_COLUMNSTORE\_FILES](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/mv-columnstore-files.md)
* [MV\_COLUMNSTORE\_MERGE\_STATUS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/mv-columnstore-merge-status.md)
* [MV\_REBALANCE\_STATUS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/mv-rebalance-status.md)
* [MV\_ROW\_CHANGE\_COUNTS](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/mv-row-change-counts.md)

***

Modified at: July 3, 2025

Source: [/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/](https://docs.singlestore.com/db/v9.1/reference/information-schema-reference/segment-column-and-merge-status/)

(An index of the documentation is available at /llms.txt)