pack_all()
Creates a dynamic property bag object from all the columns of the tabular expression.
Note
The representation of the returned object isn't guaranteed to be byte-level-compatible between runs. For example, properties that appear in the bag may appear in a different order.
Syntax
pack_all([ ignore_null_empty ])
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| ignore_null_empty | bool |
Indicates whether to ignore null/empty columns and exclude them from the resulting property bag. The default value is false. |
Example
The following query will use pack_all() to create columns for the below table.
| SourceNumber | TargetNumber | CharsCount |
|---|---|---|
| 555-555-1234 | 555-555-1212 | 46 |
| 555-555-1234 | 555-555-1213 | 50 |
| 555-555-1313 | 42 | |
| 555-555-3456 | 74 |
datatable(SourceNumber:string,TargetNumber:string,CharsCount:long)
[
'555-555-1234','555-555-1212',46,
'555-555-1234','555-555-1213',50,
'555-555-1313','',42,
'','555-555-3456',74
]
| extend Packed=pack_all(), PackedIgnoreNullEmpty=pack_all(true)
Output
| SourceNumber | TargetNumber | CharsCount | Packed | PackedIgnoreNullEmpty |
|---|---|---|---|---|
| 555-555-1234 | 555-555-1212 | 46 | {"SourceNumber":"555-555-1234", "TargetNumber":"555-555-1212", "CharsCount": 46} | {"SourceNumber":"555-555-1234", "TargetNumber":"555-555-1212", "CharsCount": 46} |
| 555-555-1234 | 555-555-1213 | 50 | {"SourceNumber":"555-555-1234", "TargetNumber":"555-555-1213", "CharsCount": 50} | {"SourceNumber":"555-555-1234", "TargetNumber":"555-555-1213", "CharsCount": 50} |
| 555-555-1313 | 42 | {"SourceNumber":"555-555-1313", "TargetNumber":"", "CharsCount": 42} | {"SourceNumber":"555-555-1313", "CharsCount": 42} | |
| 555-555-3456 | 74 | {"SourceNumber":"", "TargetNumber":"555-555-3456", "CharsCount": 74} | {"TargetNumber":"555-555-3456", "CharsCount": 74} |
Note
There is a difference between the Packed and the PackedIgnoreNullEmpty columns in the last two rows of the above example. These two rows included empty values that were ignored by pack_all(true).