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Merge pull request #6380 from segmentio/query-language-renames
Update query-language docs to match changes being made with actual query language
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‎src/api/public-api/query-language.md‎

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@@ -37,7 +37,7 @@ Follow these syntax rules when you create definitions:
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The language supports the following syntactic sugar adjustments:
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- The language automatically wraps a 'literal' extractor function around string or number inputs wherever a scalar expression expects them.
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- You can invoke the boolean comparator functions `eq`, `neq`, `gt`, `gte`, `lt`, and `lte` by omitting the period and parenthesis and replacing the function name with the equivalent symbols `=`, `!=`, `>`, `>=`, `<`, and `<=`. Regardless of the syntactic sugar, the comparison still dictates the operations allowed in the call-chain.
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- You can invoke the boolean comparator functions `equals`, `differs`, `greater_than`, `at_least`, `less_than`, and `at_most` by omitting the period and parenthesis and replacing the function name with the equivalent symbols `=`, `!=`, `>`, `>=`, `<`, and `<=`. Regardless of the syntactic sugar, the comparison still dictates the operations allowed in the call-chain.
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### Definition type
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### Comparisons
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| `eq` | |
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| ----------- | -------------------------------------------------------- |
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| Syntax | `eq({v: Scalar})`<br>`v` - value to compare for equality |
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| Return Type | `Comparator` |
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| Example | `eq(500)`<br>Syntactic Sugar: `== 500` |
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| `neq` | |
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| ----------- | ----------------------------------------------------------- |
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| Syntax | `neq({v: Scalar})`<br>`v` - value to compare for inequality |
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| Return Type | `Comparator` |
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| Example | `neq(500)`<br>Syntactic Sugar: `!= 500` |
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| `is_null` | |
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| ----------- | ------------ |
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| Syntax | `is_null()` |
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| Return Type | `Comparator` |
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| Example | `is_null()` |
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| `is_set` | |
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| `equals` | |
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| ----------- | ------------------------------------------------------------ |
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| Syntax | `equals({v: Scalar})`<br>`v` - value to compare for equality |
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| Return Type | `Comparator` |
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| Example | `equals(500)`<br>Syntactic Sugar: `== 500` |
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| `differs` | |
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| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| Syntax | `differs({v: Scalar})`<br>`v` - value to compare for inequality |
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| Return Type | `Comparator` |
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| Notes | 'differs' only returns true if the value exists and is not equal. If null values need to be considered then use 'NOT (expression) = (value)' or add a condition to check for nulls '(expression) != (value) OR (expression).absent()'. |
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| Example | `differs(500)`<br>Syntactic Sugar: `!= 500` |
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| `absent` | |
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| ----------- | ----------------------------------------------------------------------------- |
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| Syntax | `absent()` |
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| Return Type | `Comparator` |
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| Description | Returns true when a value is null. Equivalent to `NOT (expression).exists()`. |
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| Example | `absent()` |
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| `exists` | |
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| ----------- | ----------------------------------------------------------------------------------------------- |
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| Syntax | `is_set()` |
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| Syntax | `exists()` |
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| Return Type | `Comparator` |
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| Description | Returns true when a value is set, meaning not null. Equivalent to `NOT (expression).is_null()`. |
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| Example | `is_set()` |
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| `gt` | |
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| ----------- | ------------------------------------------- |
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| Syntax | `gt({n: Scalar})`<br>`n` - value to compare |
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| Return Type | `Comparator` |
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| Example | `gt(500)`<br>Syntactic Sugar: `> 500` |
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| `gte` | |
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| ----------- | -------------------------------------------- |
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| Syntax | `gte({n: Scalar})`<br>`n` - value to compare |
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| Return Type | `Comparator` |
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| Example | `gte(500)`<br>Syntactic Sugar: `>= 500` |
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| `lt` | |
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| ----------- | ----------------------------------------- |
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| Syntax | `lt({n: Scalar})`<br>n - value to compare |
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| Return Type | `Comparator` |
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| Example | `lt(500)`<br>Syntactic Sugar: `< 500` |
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| `lte` | |
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| ----------- | -------------------------------------------- |
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| Syntax | `lte({n: Scalar})`<br>`n` - value to compare |
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| Return Type | `Comparator` |
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| Example | `lte(500)`<br>Syntactic Sugar: `<= 500` |
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| `contains` | |
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| ----------- | -------------------------------------------------------------------------- |
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| Syntax | `contains({s: String})`<br>`s` - string to search for in containing string |
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| Return Type | `Comparator` |
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| Example | `contains('shoes')` |
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| Description | Returns true when a value is set, meaning not null. Equivalent to `NOT (expression).absent()`. |
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| Example | `exists()` |
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| `greater_than` | |
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| -------------- | ----------------------------------------------------- |
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| Syntax | `greater_than({n: Scalar})`<br>`n` - value to compare |
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| Return Type | `Comparator` |
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| Example | `greater_than(500)`<br>Syntactic Sugar: `> 500` |
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| `at_least` | |
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| -------------- | ------------------------------------------------- |
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| Syntax | `at_least({n: Scalar})`<br>`n` - value to compare |
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| Return Type | `Comparator` |
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| Example | `at_least(500)`<br>Syntactic Sugar: `>= 500` |
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| `less_than` | |
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| -------------- | ------------------------------------------------ |
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| Syntax | `less_than({n: Scalar})`<br>n - value to compare |
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| Return Type | `Comparator` |
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| Example | `less_than(500)`<br>Syntactic Sugar: `< 500` |
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| `at_most` | |
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| -------------- | ------------------------------------------------ |
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| Syntax | `at_most({n: Scalar})`<br>`n` - value to compare |
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| Return Type | `Comparator` |
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| Example | `at_most(500)`<br>Syntactic Sugar: `<= 500` |
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| `contains` | |
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| -------------- | ------------------------------------------------------------------------------------------ |
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| Syntax | `contains({a: Array})`<br>`a` - array of possible values |
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| Return Type | `Comparator` |
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| Description | Matches when the value contains one of the elements of the parameter array as a substring. |
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| Example | `contains(['shoes','shirts'])` |
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| `omits` | |
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| ----------- | ------------------------------------------------------------------------------------------------------------------------------- |
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| Return Type | `Comparator` |
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| Example | `ends_with('total')` |
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| `contains_one` | |
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| -------------- | ------------------------------------------------------------------------------------------ |
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| Syntax | `contains_one({a: Array})`<br>`a` - array of possible values |
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| Return Type | `Comparator` |
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| Description | Matches when the value contains one of the elements of the parameter array as a substring. |
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| Example | `contains_one(['shoes','shirts'])` |
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| `one_of` | |
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| ----------- | ---------------------------------------------------------------------------------- |
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| Syntax | `one_of({a: Array})`<br>`a` - array of possible values |
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| `ScalarExtractor` (extends `Extractor`, `Scalar`) | |
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| ------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| Base Type | `Extractor`, `Scalar` |
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| Operations allowed in call-chain | `eq`, `neq`, `is_null`, `is_set`, `gt`, `gte`, `lt`, `lte`, `contains`, `omits`, `starts_with`, `ends_with`, `contains_one`, `one_of`, `before_date`, `after_date`, `within_last`, `before_last`, `after_next` (inherited from `Scalar`) |
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| Operations allowed in call-chain | `equals`, `differs`, `absent`, `exists`, `greater_than`, `at_least`, `less_than`, `at_most`, `contains`, `omits`, `starts_with`, `ends_with`, `one_of`, `before_date`, `after_date`, `within_last`, `before_last`, `after_next` (inherited from `Scalar`) |
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| Notes | A `ScalarExtractor` represents extractions of a single data element, like a field value or a trait value. |
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| `EventPropertyExtractor` (extends `Extractor`) | |
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| `Scalar` | |
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| -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| Operations allowed in call-chain | `eq`, `neq`, `is_null`, `is_set`, `gt`, `gte`, `lt`, `lte`, `contains`, `omits`, `starts_with`, `ends_with`, `contains_one`, `one_of`, `before_date`, `after_date`, `within_last`, `before_last`, `after_next`, `within_next` |
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| Operations allowed in call-chain | `equals`, `differs`, `absent`, `exists`, `greater_than`, `at_least`, `less_than`, `at_most`, `contains`, `omits`, `starts_with`, `ends_with`, `one_of`, `before_date`, `after_date`, `within_last`, `before_last`, `after_next`, `within_next` |
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| `ListScalar` | |
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| -------------------------------- | ------- |
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```sql
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event(“Shoes Bought”).within(30 days).mode(property(“spend”), 2)
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```
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```

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