> For the complete documentation index, see [llms.txt](https://docs.redivis.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.redivis.com/reference/workflows/transforms/variable-creation-methods/navigation.md). # Navigation ### First value Returns the value of a variable for the first row in a given analytic window. –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#first_value) ```sql FIRST_VALUE(@variable[ @ignore_null NULLS]) ``` #### Return type dynamic (input-dependent) #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | -------------- | -------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | -------- | -------------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | true | - | | `@ignore_null` | [enum](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#enum) | any of: `IGNORE`, `RESPECT` | false | *(Ignore nulls (default))* | ### Lag Returns the value of a variable on a preceding row within the analytic window –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#lag) ```sql LAG(@variable, @literal[, @default_value]) ``` #### Return type dynamic (input-dependent) #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | ---------------- | -------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | -------- | ------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | true | - | | `@literal` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [integer](https://docs.redivis.com/reference/datasets/variables#integer) | false | *(1)* | | `@default_value` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | false | *(NULL)* | ### Last value Returns the value of a variable for the last row in a given analytic window. –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#last_value) ```sql LAST_VALUE(@variable[ @ignore_null NULLS]) ``` #### Return type dynamic (input-dependent) #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | -------------- | -------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | -------- | -------------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | true | - | | `@ignore_null` | [enum](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#enum) | any of: `IGNORE`, `RESPECT` | false | *(Ignore nulls (default))* | ### Lead Returns the value of a variable on a subsequent row within the analytic window –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#lead) ```sql LEAD(@variable, @literal[, @default_value]) ``` #### Return type dynamic (input-dependent) #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | ---------------- | -------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | -------- | ------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | true | - | | `@literal` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [integer](https://docs.redivis.com/reference/datasets/variables#integer) | false | *(1)* | | `@default_value` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | false | *(NULL)* | ### Nth value Returns the value at the Nth row of a given window frame. –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#nth_value) ```sql NTH_VALUE(@variable, @literal[ @ignore_null NULLS]) ``` #### Return type dynamic (input-dependent) #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | -------------- | -------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | -------- | -------------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [Redivis type](https://docs.redivis.com/reference/datasets/variables#variable-types) | true | - | | `@literal` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [integer](https://docs.redivis.com/reference/datasets/variables#integer) | true | - | | `@ignore_null` | [enum](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#enum) | any of: `IGNORE`, `RESPECT` | false | *(Ignore nulls (default))* | ### Percentile (continuous) Computes the specified percentile value for a variable within an ordered partition, with linear interpolation. –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#percentile_cont) ```sql PERCENTILE_CONT(@variable, @literal[ @ignore_null NULLS]) ``` #### Return type float #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | -------------- | -------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | -------------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [integer](https://docs.redivis.com/reference/datasets/variables#integer), [float](https://docs.redivis.com/reference/datasets/variables#float) | true | *(variable)* | | `@literal` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [float](https://docs.redivis.com/reference/datasets/variables#float) | true | *(Value between \[0, 1])* | | `@ignore_null` | [enum](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#enum) | any of: `IGNORE`, `RESPECT` | false | *(Ignore nulls (default))* | ### Percentile (discrete) Computes the specified percentile value for a variable within an ordered partition. Returns the first sorted value with cumulative distribution greater than or equal to the percentile. –> [learn more](https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#percentile_disc) ```sql PERCENTILE_DISC(@variable, @literal[ @ignore_null NULLS]) ``` #### Return type float #### Parameters | Name | Type | Allowed values | Required | Placeholder (in UI) | | -------------- | -------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | -------------------------- | | `@variable` | [variable](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#variable) | any [integer](https://docs.redivis.com/reference/datasets/variables#integer), [float](https://docs.redivis.com/reference/datasets/variables#float) | true | *(variable)* | | `@literal` | [literal](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#literal) | any [float](https://docs.redivis.com/reference/datasets/variables#float) | true | *(Value between \[0, 1])* | | `@ignore_null` | [enum](https://docs.redivis.com/reference/projects/transform-nodes/variable-creation-methods/common-elements#enum) | any of: `IGNORE`, `RESPECT` | false | *(Ignore nulls (default))* | --- # Agent Instructions This documentation is published with GitBook. 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