docs: update formula syntax & revise date function content

packages/noco-docs/content/en/setup-and-usages/formulas.md

@@ -66,13 +66,13 @@ Example: ({Column1} + ({Column2} * {Column3}) / (3 - $Column4$ ))
 | Name        | Syntax                           | Sample                          | Output                                                                    |
 |-------------|----------------------------------|---------------------------------|---------------------------------------------------------------------------|
 | **CONCAT**  | `CONCAT(str1, [str2,...])`       | `CONCAT({Column1}, ' ', {Column2})`     | Concatenated string of input parameters                                   |
-| **LEFT**    | `LEFT(str1, [str2,...])`         | `LEFT({Column}, 3)`               | `n` characters from the beginning of input parameter                      |
+| **LEFT**    | `LEFT(str1, n)`         | `LEFT({Column}, 3)`               | `n` characters from the beginning of input parameter                      |
 | **LEN**     | `LEN(str)`                       | `LEN({Column})`                    | Input parameter character length                                          |
 | **LOWER**   | `LOWER(str)`                     | `LOWER({Column})`                  | Lower case converted string of input parameter                            |
-| **MID**     | `SUBTR(str, position, [count])`  | `MID({Column}, 3, 2)`             | Alias for `SUBSTR`                                                        |
+| **MID**     | `MID(str, position, [count])`  | `MID({Column}, 3, 2)`             | Alias for `SUBSTR`                                                        |
 | **REPEAT**  | `REPEAT(str, count)`             | `REPEAT({Column}, 2)`             | Specified copies of the input parameter string concatenated together      |
 | **REPLACE** | `REPLACE(str, srchStr, rplcStr)` | `REPLACE({Column}, 'int', 'num')` | String, after replacing all occurrences of `srchStr` with `rplcStr`       |
-| **RIGHT**   | `RIGHT(str, count)`              | `RIGHT({Column}, 3)`              | `n` characters from the end of input parameter                            |
+| **RIGHT**   | `RIGHT(str, n)`              | `RIGHT({Column}, 3)`              | `n` characters from the end of input parameter                            |
 | **SEARCH**  | `SEARCH(str, srchStr)`           | `SEARCH({Column}, 'str')`         | Index of `srchStr` specified if found, 0 otherwise                        |
 | **SUBSTR**  | `SUBTR(str, position, [count])`  | `SUBSTR({Column}, 3, 2)`          | Substring of length 'count' of input string, from the postition specified |
 | **TRIM**    | `TRIM(str)`                      | `TRIM({Column})`                   | Remove trailing and leading whitespaces from input parameter              |
@@ -83,11 +83,13 @@ Example: ({Column1} + ({Column2} * {Column3}) / (3 - $Column4$ ))
 
 | Name | Syntax | Sample | Output | Remark |
 |---|---|---|---|---|
-| **DATEADD** | `DATEADD({DATE_COL}, 1, 'day')` | `DATEADD(date, 1, 'day')` | Supposing {DATE_COL} is 2022-03-14. The result is 2022-03-15. | DateTime columns and negative values are supported. Example: `DATEADD(DATE_TIME_COL, -1, 'day')` |
+| **NOW** | `NOW()` | `NOW()` | 2022-05-19 17:20:43 | Returns the current time and day |
-|  | `DATEADD({DATE_COL}, 2, 'month')` | `DATEADD(date, 2, 'month')` | Supposing {DATE_COL} is 2022-03-14 03:14. The result is 2022-05-14 03:14. | DateTime columns and negative values are supported. Example: `DATEADD(DATE_TIME_COL, -2, 'month')` |
 |  | `IF(NOW() < {DATE_COL}, "true", "false")` | `IF(NOW() < date, "true", "false")` | If current date is less than {DATE_COL}, it returns true. Otherwise, it returns false. | DateTime columns and negative values are supported. |
-|  | `IF(NOW() < DATEADD({DATE_COL},10,'day'), "true", "false")` | `IF(NOW() < DATEADD(date,10,'day'), "true", "false")` | If the current date is less than {DATE_COL} plus 10 days, it returns true. Otherwise, it returns false. | DateTime columns and negative values are supported. |
+| **DATEADD** | `DATEADD(date \| datetime, value, ["day" \| "week" \| "month" \| "year"])` | `DATEADD(date, 1, 'day')` | Supposing {DATE_COL} is 2022-03-14. The result is 2022-03-15. | DateTime columns and negative values are supported. Example: `DATEADD(DATE_TIME_COL, -1, 'day')` |
-
+|  |  | `DATEADD(date, 1, 'week')` | Supposing {DATE_COL} is 2022-03-14 03:14. The result is 2022-03-21 03:14. | DateTime columns and negative values are supported. Example: `DATEADD(DATE_TIME_COL, -1, 'week')` |
+|  |  | `DATEADD(date, 1, 'month')` | Supposing {DATE_COL} is 2022-03-14 03:14. The result is 2022-04-14 03:14. | DateTime columns and negative values are supported. Example: `DATEADD(DATE_TIME_COL, -1, 'month')` |
+|  |  | `DATEADD(date, 1, 'year')` | Supposing {DATE_COL} is 2022-03-14 03:14. The result is 2023-03-14 03:14. | DateTime columns and negative values are supported. Example: `DATEADD(DATE_TIME_COL, -1, 'year')` |
+|  |  | `IF(NOW() < DATEADD(date,10,'day'), "true", "false")` | If the current date is less than {DATE_COL} plus 10 days, it returns true. Otherwise, it returns false. | DateTime columns and negative values are supported. |
 ### Logical Operators
 
 | Operator | Sample               | Description              |
@@ -104,7 +106,7 @@ Example: ({Column1} + ({Column2} * {Column3}) / (3 - $Column4$ ))
 
 | Name       | Syntax                                         | Sample                                      | Output                                                      |
 |------------|------------------------------------------------|---------------------------------------------|-------------------------------------------------------------|
-| **IF**     | `IF(expr, successCase, [failCase])`            | `IF({Column} > 1, Value1, Value2)`            | successCase if `expr` evaluates to TRUE, elseCase otherwise |
+| **IF**     | `IF(expr, successCase, elseCase)`            | `IF({Column} > 1, Value1, Value2)`            | successCase if `expr` evaluates to TRUE, elseCase otherwise |
 | **SWITCH** | `SWITCH(expr, [pattern, value, ..., default])` | `SWITCH({Column}, 1, 'One', 2, 'Two', '--')` | Switch case value based on `expr` output                    |
 | **AND**    | `AND(expr1, [expr2,...])`                      | `AND({Column} > 2, {Column} < 10)`              | TRUE if all `expr` evaluate to TRUE                         |
 | **OR**     | `OR(expr1, [expr2,...])`                       | `OR({Column} > 2, {Column} < 10)`               | TRUE if at least one `expr` evaluates to TRUE               |