docs: add supported json op

docs/reference/sql/functions/overview.md

@@ -271,7 +271,23 @@ SELECT json_to_string(parse_json('{"a": 1, "b": 2}'));
 * `json_get_float(json, path)` to extract a float value from a JSON value by the path, while integer and boolean values will be converted to floats.
 * `json_get_string(json, path)` to extract a string value from a JSON value by the path. All valid JSON values will be converted to strings, including null values, objects and arrays.
 
-`path` is a string that select and extract elements from a json value. Checkout [SQL/JSONPath](https://github.com/datafuselabs/jsonb?tab=readme-ov-file#sqljsonpath) for supported `path` syntax.
+`path` is a string that select and extract elements from a json value. The following operators in the path are supported:
+
+| Operator                 | Description                                                  | Examples           |
+|--------------------------|--------------------------------------------------------------|--------------------|
+| `$`                      | The root element                                             | `$`                |
+| `@`                      | The current element in the filter expression                 | `$.event?(@ == 1)` |
+| `.*`                     | Selecting all elements in an Object                          | `$.*`              |
+| `.<name>`                | Selecting element that match the name in an Object           | `$.event`          |
+| `:<name>`                | Alias of `.<name>`                                           | `$:event`          |
+| `["<name>"]`             | Alias of `.<name>`                                           | `$["event"]`       |
+| `[*]`                    | Selecting all elements in an Array                           | `$[*]`             |
+| `[<pos>, ..]`            | Selecting 0-based `n-th` elements in an Array                | `$[1, 2]`          |
+| `[last - <pos>, ..]`     | Selecting `n-th` element before the last element in an Array | `$[0, last - 1]`   |
+| `[<pos1> to <pos2>, ..]` | Selecting all elements of a range in an Array                | `$[1 to last - 2]` |
+| `?(<expr>)`              | Selecting all elements that matched the filter expression    | `$?(@.price < 10)` |
+
+If the path is invalid, the function will return a NULL value.
 
 ```sql
 SELECT json_get_int(parse_json('{"a": {"c": 3}, "b": 2}'), 'a.c');

i18n/zh/docusaurus-plugin-content-docs/current/reference/sql/functions/overview.md

@@ -264,7 +264,23 @@ SELECT json_to_string(parse_json('{"a": 1, "b": 2}'));
 * `json_get_float(json, path)` 按照路径 `path` 从 JSON 中获取浮点数值。布尔值、整数值将被转换为浮点数。
 * `json_get_string(json, path)` 按照路径 `path` 从 JSON 中获取字符串。所有类型的 JSON 值都将被转换为字符串，包括数组、对象和 null。
 
-`path` 是一个用于从 JSON 值中选择和提取元素的字符串。查看 [SQL/JSONPath](https://github.com/datafuselabs/jsonb?tab=readme-ov-file#sqljsonpath) 以了解支持的 `path` 语法。
+`path` 是一个用于从 JSON 值中选择和提取元素的字符串。`path` 中支持的操作符有：
+
+| 操作符                    | 描述                                                          | 示例                |
+|--------------------------|--------------------------------------------------------------|--------------------|
+| `$`                      | 根元素                                                        | `$`                |
+| `@`                      | 过滤表达式中的当前元素                                           | `$.event?(@ == 1)` |
+| `.*`                     | 选择对象中的所有元素                                             | `$.*`             |
+| `.<name>`                | 选择对象中匹配名称的元素                                          | `$.event`         |
+| `:<name>`                | `.<name>` 的别名                                              | `$:event`          |
+| `["<name>"]`             | `.<name>` 的别名                                              | `$["event"]`       |
+| `[*]`                    | 选择数组中的所有元素                                             | `$[*]`             |
+| `[<pos>, ..]`            | 选择数组中基于0的第 `n` 个元素                                    | `$[1, 2]`         |
+| `[last - <pos>, ..]`     | 选择数组中最后一个元素之前的第 `n` 个元素                           | `$[0, last - 1]`   |
+| `[<pos1> to <pos2>, ..]` | 选择数组中某个范围内的所有元素                                     | `$[1 to last - 2]` |
+| `?(<expr>)`              | 选择所有匹配过滤表达式的元素                                      | `$?(@.price < 10)` |
+
+如果 `path` 是无效的，函数将返回 `NULL`。
 
 ```sql
 SELECT json_get_int(parse_json('{"a": {"c": 3}, "b": 2}'), 'a.c');