Explain maintainsqlindex

In Microsoft Dynamics NAV (formerly Navision), the MAINTAINSQLINDEX property is used to specify whether a specific field in a table should be indexed in SQL Server. When set to “Yes,” it ensures that the corresponding field in the SQL Server database has an index created or maintained for optimal performance.

But what does it really Mean in database terms?

In database terms, the MAINTAINSQLINDEX property in Microsoft Dynamics NAV (Navision) indicates whether an index should be created or maintained for a specific field in the underlying SQL Server database. Indexes in databases are like the index in a book – they help speed up data retrieval by allowing the database engine to quickly locate rows based on the indexed columns. By setting MAINTAINSQLINDEX to “Yes,” you’re instructing the system to ensure that the field has an index in the SQL Server database, which can improve query performance when accessing data.

What happens when you set it to “no”?

When you set the MAINTAINSQLINDEX property to “No” for a field in Microsoft Dynamics NAV (Navision), you’re essentially instructing the system not to create or maintain an index for that field in the underlying SQL Server database. This means that the database won’t create or maintain an index specifically for that field, potentially leading to slower query performance when accessing data based on that field. However, it can also save storage space and maintenance overhead if the field isn’t frequently used for querying or if indexing isn’t necessary for the specific application’s requirements.

Does it create vsift if it’s set to no?

When the MAINTAINSQLINDEX property is set to “No” for a field in Microsoft Dynamics NAV (Navision), it typically does not create a VSIFT (Very Large Field Index Table) index for that field. VSIFT indexes are specific to Dynamics NAV and are used for indexing large text fields (such as Text and Code fields) in SQL Server.

If a field is not indexed (i.e., MAINTAINSQLINDEX set to “No”), it usually means that no index, including VSIFT indexes, will be created for that field. However, it’s always recommended to verify the behavior based on the specific version and configuration of Dynamics NAV being used, as details may vary.

Will create sift indexes instead if it’s set to no?

In Microsoft Dynamics NAV (Navision), when the MAINTAINSQLINDEX property for a field is set to “No,” a SIFT (SumIndexFieldTable) index is not automatically created for that field. SIFT indexes are used for storing aggregated data in a separate table to improve the performance of certain queries.

Setting MAINTAINSQLINDEX to “No” typically means that no specific index, including SIFT indexes, will be created for that field in the SQL Server database. This can lead to slower query performance when accessing data based on that field, as the database engine won’t have an index to quickly locate the relevant rows.

Short Summary

• MAINTAINSQLINDEX property is used to specify whether a field in a table should be indexed in SQL Server for optimal performance.
• MAINTAINSQLINDEX indicates whether an index should be created or maintained for a field in the underlying SQL Server database. Indexes help speed up data retrieval by allowing the database engine to quickly locate rows based on the indexed columns.
• MAINTAINSQLINDEX set to “No” means that the database won’t create or maintain an index for that field, potentially leading to slower query performance when accessing data based on that field. However, it can also save storage space and maintenance overhead if the field isn’t frequently used for querying or if indexing isn’t necessary for the specific application’s requirements.
• MAINTAINSQLINDEX typically does not create a VSIFT (Very Large Field Index Table) index for that field when it’s set to “No”. VSIFT indexes are specific to Dynamics NAV and are used for indexing large text fields (such as Text and Code fields) in SQL Server.
• MAINTAINSQLINDEX does not automatically create a SIFT (SumIndexFieldTable) index for that field when it’s set to “No”. SIFT indexes are used for storing aggregated data in a separate table to improve the performance of certain queries.