---
id: object/page/9521
type: object
title: Page 9521 "Database Missing Indexes"
summary: Page 9521 "Database Missing Indexes" in Base Application (System.DataAdministration). Present since at least BC23, still in BC30, changed in BC26.
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    title: src/Layers/W1/BaseApp/Modules/System/DatabaseInformation/DatabaseMissingIndexes.page.al (releases/29.x)
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    title: Database missing indexes in Business Central
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    url: https://learn.microsoft.com/dynamics365/business-central/manage-indexes
    title: Manage database index usage
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    - https://learn.microsoft.com/dynamics365/business-central/manage-indexes
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object_id: 9521
name: Database Missing Indexes
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---

# Page 9521 "Database Missing Indexes"

> Page 9521 "Database Missing Indexes" in Base Application (System.DataAdministration). Present since at least BC23, still in BC30, changed in BC26.

Base Application · System.DataAdministration · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Modules/System/DatabaseInformation/DatabaseMissingIndexes.page.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Caption | Database Missing Indexes |
| SourceTable | Database Missing Indexes |
| PageType | List |
| UsageCategory | Administration |
| ApplicationArea | All |

## Fields on this page

Layout controls in source order, grouped by the container they sit in. Shows: the table field a control is bound to (or its expression as written); ToolTip: the control's own, else the bound field's (marked).

| Group | Control | Shows | ToolTip |
|---|---|---|---|
| Group | Table Name | `Rec."Table Name"` | Name of the table on the database. |
|  | Extension Id | `Rec."Extension Id"` | Id of the extension that table belongs to. |
|  | Index Equality Columns | `Rec."Index Equality Columns"` | A list of columns that are used in WHERE equality predicates in the SQL query needing the index. |
|  | Index Inequality Columns | `Rec."Index Inequality Columns"` | A list of columns that are used in WHERE inequality predicates (such as < or >) or ORDER BY in the SQL query needing the index. |
|  | Index Include Columns | `Rec."Index Include Columns"` | A list of columns that are part of the SELECT clause in the SQL query needing the index. |
|  | Seeks | `Rec."User Seeks"` | Number of seeks caused by queries that the recommended index could have been used for. |
|  | Scans | `Rec."User Scans"` | Number of scans caused by queries that the recommended index could have been used for. |
|  | Average Total Cost | `Rec."Average Total User Cost"` | Average cost of the queries that could be reduced by the index. |
|  | Average Impact | `Rec."Average User Impact"` | Average percentage benefit that queries could experience if this missing index is added. |
|  | Estimated Benefit | `Rec."Estimated Benefit"` | The estimated benefit gained by adding the missing index. |

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC26

## Documented on Microsoft Learn

- [Database missing indexes in Business Central](https://learn.microsoft.com/dynamics365/business-central/database-missing-indexes)
- [Manage database index usage](https://learn.microsoft.com/dynamics365/business-central/manage-indexes)

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "page", object_name: "Database Missing Indexes")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.