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site/docs/extensions/functions_aggregate_approx.md

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+
+
+
+
+# functions_aggregate_approx.yaml
+
+
+This document file is generated for [functions_aggregate_approx.yaml](https://github.com/substrait-io/substrait/tree/main/extensions/functions_aggregate_approx.yaml)
+## Aggregate Functions
+
+### approx_count_distinct
+
+
+Implementations:  
+approx_count_distinct(`x`): -> `return_type`   
+0. approx_count_distinct(`any`): -> `i64`
+
+*Calculates the approximate number of rows that contain distinct values of the expression argument using HyperLogLog. This function provides an alternative to the COUNT (DISTINCT expression) function, which returns the exact number of rows that contain distinct values of an expression. APPROX_COUNT_DISTINCT processes large amounts of data significantly faster than COUNT, with negligible deviation from the exact result.*

site/docs/extensions/functions_aggregate_decimal_output.md

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+
+
+
+
+# functions_aggregate_decimal_output.yaml
+
+
+This document file is generated for [functions_aggregate_decimal_output.yaml](https://github.com/substrait-io/substrait/tree/main/extensions/functions_aggregate_decimal_output.yaml)
+## Aggregate Functions
+
+### count
+
+
+Implementations:  
+count(`x`, `option:overflow`): -> `return_type`   
+0. count(`any`, `option:overflow`): -> `decimal<38,0>`
+
+*Count a set of values. Result is returned as a decimal instead of i64.*
+
+<details><summary>Options:</summary>
+
+<li>overflow ['SILENT', 'SATURATE', 'ERROR'] </li> 
+
+</details>
+
+### count
+
+
+Implementations:
+
+*Count a set of records (not field referenced). Result is returned as a decimal instead of i64.*
+### approx_count_distinct
+
+
+Implementations:  
+approx_count_distinct(`x`): -> `return_type`   
+0. approx_count_distinct(`any`): -> `decimal<38,0>`
+
+*Calculates the approximate number of rows that contain distinct values of the expression argument using HyperLogLog. This function provides an alternative to the COUNT (DISTINCT expression) function, which returns the exact number of rows that contain distinct values of an expression. APPROX_COUNT_DISTINCT processes large amounts of data significantly faster than COUNT, with negligible deviation from the exact result. Result is returned as a decimal instead of i64.*

site/docs/extensions/functions_aggregate_generic.md

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+
+
+
+
+# functions_aggregate_generic.yaml
+
+
+This document file is generated for [functions_aggregate_generic.yaml](https://github.com/substrait-io/substrait/tree/main/extensions/functions_aggregate_generic.yaml)
+## Aggregate Functions
+
+### count
+
+
+Implementations:  
+count(`x`, `option:overflow`): -> `return_type`   
+0. count(`any`, `option:overflow`): -> `i64`
+
+*Count a set of values*
+
+<details><summary>Options:</summary>
+
+<li>overflow ['SILENT', 'SATURATE', 'ERROR'] </li> 
+
+</details>
+
+### count
+
+
+Implementations:
+
+*Count a set of records (not field referenced)*
+### any_value
+
+
+Implementations:  
+any_value(`x`, `option:ignore_nulls`): -> `return_type`   
+0. any_value(`any1`, `option:ignore_nulls`): -> `any1?`
+
+*Selects an arbitrary value from a group of values.
+If the input is empty, the function returns null.
+*
+
+<details><summary>Options:</summary>
+
+<li>ignore_nulls ['TRUE', 'FALSE'] </li> 
+
+</details>