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quickstarts/manage-data/Pushdown-feature.md

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@@ -25,12 +25,12 @@ When cost-based join pushdown is enabled, the connector only pushes down join op
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The following table describes catalog configuration properties for join pushdown.
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| Property name | Description | Default value |
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|---------------|-------------|---------------|
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| join-pushdown.enabled | Enable join pushdown. `join_pushdown_enabled` is the equal catalog session property. | true |
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| join-pushdown.strategy | Strategy used to evaluate whether join operations are pushed down. Set to AUTOMATIC to enable cost-based join pushdown, or EAGER to pushdown joins. Note that EAGER can push down joins even when table statistics are unavailable. | AUTOMATIC |
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| Property name | Description | Default value |
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|------------------------|-----------------------------------------------------------------------------|---------------|
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| join-pushdown.enabled | Enable join pushdown. `join_pushdown_enabled` is the equivalent catalog session property. | true |
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| join-pushdown.strategy | Strategy used to evaluate whether join operations are pushed down. Set to `AUTOMATIC` to enable cost-based join pushdown, or `EAGER` to pushdown joins. Note that `EAGER` can push down joins even when table statistics are unavailable. | AUTOMATIC |
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The connector does not support pushdown of range predicates, such as ```>```, ```<```, or ```BETWEEN```, on columns with character string types like ```CHAR``` or ```VARCHAR```. Equality predicates, such as ```IN``` or ```=```, and inequality predicates, such as ```!=``` on columns with textual types are pushed down. This ensures correctness of results since the remote data source may sort strings differently than Trino.
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The connector does not support pushdown of range predicates, such as ```>```, ```<```, or ```BETWEEN```, on columns with character string types like ```CHAR``` or ```VARCHAR```. Equality predicates, such as ```IN``` or ```=```, and inequality predicates, such as ```!=``` on columns with textual types are pushed down. This ensures correctness of results since the remote data source may sort strings differently than Trino.
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## Limit pushdown
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A LIMIT reduces the number of returned rows for a SQL SELECT statement. Limit pushdown enables connector to push processing of such queries of unsorted records to Teradata. A pushdown of this clause can improve the performance of the query and significantly reduce the amount of data transferred from Teradata to Trino.

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