## io.SinkWrite


What storing a node's state did, in any sink.


Usage

``` python
io.SinkWrite(
    mode, version, contract, inserted=0, deleted=0, constraints=dict()
)
```


[mode](sql.Dialect.md#sverify.sql.Dialect.mode) is how: `created` the table, `overwrite` it, `merge` the change (Delta), `append` the new rows or write the change `row_level` (Iceberg), `update` it with the change (a sink of your own), or `skipped` a state the table already holds. `version` is the table's version afterwards; `constraints` are the CHECK constraints the table has for the node's guarantees (Delta). `print` it for a one-line summary. A refresh's report lists the writes it made.


## Attributes


`mode: Literal[``"created", `<span class="st">`"overwrite"``, ``"merge"``, ``"append"``, ``"row_level"``, ``"update"``, ``"skipped"``]`</span>  
`"created"` (the first write made the table), `"overwrite"` (the table's rows were replaced), `"merge"` (the change in one MERGE commit, Delta), `"append"` (the change only added rows, Iceberg), `"row_level"` (position deletes and new rows in one snapshot, Iceberg), `"update"` (the change, written by a sink of your own) or `"skipped"` (the table already has this state's epoch).

`version: int | None`  
The table's version afterwards (Delta), its snapshot sequence number (Iceberg), or None if the sink has no versions.

`contract: Contract`  
What the commit recorded.

`inserted: int`  
Rows written.

`deleted: int`  
Rows deleted.

`constraints: dict[str, str]`  
The table's CHECK constraints from the node's guarantees, by name (Delta; empty for Iceberg).