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Jack Ye
52684d50b9
OSS docs now own the full usage content for features that only run against an Enterprise deployment, since the client interface itself lives here; Enterprise docs keep only the parts specific to its own behavior. Sophon's overlay for these five pages is dropped since the OSS versions are now the complete reference. SQL Reference is restructured to match an object-type SQL manual (DDL by object, then DML, then DQL, then Expressions) instead of the old flat, loosely-ordered page list, absorbing the SQL client-connection guide and FTS-via-SQL examples into it.
33 lines
1.3 KiB
Plaintext
33 lines
1.3 KiB
Plaintext
---
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title: "Views"
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sidebarTitle: "View"
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description: "A saved query, evaluated when read. The non-materialized counterpart to a materialized view."
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icon: eye
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keywords: ["view", "create view", "sql", "catalog"]
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---
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<Badge color="red">Enterprise</Badge>
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This page describes a LanceDB Enterprise capability. The embedded form
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of LanceDB has no server to provide it -- see
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[Architecture](/architecture) for what differs between the two.
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A view stores a **query**, not rows. Reading it runs the query against current
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data, so a view is never stale -- and never faster than the query it wraps.
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It is the counterpart to a
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[materialized view](/management/materialized-view), which stores rows and is
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brought up to date by a refresh. Both are [catalog objects](/basics/catalog)
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defined by a query; the difference is entirely when that query runs.
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| | View | Materialized view |
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| --- | --- | --- |
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| Stores | the query | the rows |
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| Freshness | always current | as of the last refresh |
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| Read cost | the full query, every read | a table scan |
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| Write cost | none | a refresh |
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Views are created in SQL, over the [Flight SQL endpoint](/sql#connecting) --
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there is no SDK method, because the thing a view stores *is* a SQL statement.
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See [View](/sql/ddl/view) for `CREATE VIEW`, `DROP VIEW`, and listing.
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