DebugQuery(mapping=None, *, ignore_unknown_fields=False, **kwargs)Specifies a SQL statement that is evaluated to return up to 10 scalar values that are used to debug rules. If the rule fails, the values can help diagnose the cause of the failure.
The SQL statement must use GoogleSQL
syntax <https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax>__,
and must not contain any semicolons.
You can use the data reference parameter ${data()} to reference
the source table with all of its precondition filters applied.
Examples of precondition filters include row filters, incremental
data filters, and sampling. For more information, see Data
reference
parameter <https://cloud.google.com/dataplex/docs/auto-data-quality-overview#data-reference-parameter>__.
You can also name results with an explicit alias using
[AS] alias. For more information, see BigQuery explicit
aliases <https://docs.cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#explicit_alias_syntax>__.
Example:
SELECT MIN(col1) AS min_col1, MAX(col1) AS max_col1 FROM ${data()}
Attributes |
|
|---|---|
| Name | Description |
description |
str
Optional. Specifies the description of the debug query. - The maximum length is 1,024 characters. |
sql_statement |
str
Required. Specifies the SQL statement to be executed. |