fix: polish the llm+kmeans notebook

CHANGELOG.md

@@ -4,6 +4,18 @@
 
 [1]: https://pypi.org/project/bigframes/#history
 
+## [0.14.1](https://github.com/googleapis/python-bigquery-dataframes/compare/v0.14.0...v0.14.1) (2023-11-16)
+
+
+### Bug Fixes
+
+* Correctly handle null values when initializing fingerprint ordering ([#210](https://github.com/googleapis/python-bigquery-dataframes/issues/210)) ([8324f13](https://github.com/googleapis/python-bigquery-dataframes/commit/8324f133547ec35da5eefc0a8b02fe0f3887d81d))
+
+
+### Documentation
+
+* Add an example notebook about line graphs ([#197](https://github.com/googleapis/python-bigquery-dataframes/issues/197)) ([f957b27](https://github.com/googleapis/python-bigquery-dataframes/commit/f957b278b39e0a472a3153e9e1906c2d5f2ac2e5))
+
 ## [0.14.0](https://github.com/googleapis/python-bigquery-dataframes/compare/v0.13.0...v0.14.0) (2023-11-14)
 
 

bigframes/session/__init__.py

@@ -1120,8 +1120,9 @@ def _create_total_ordering(
  ordering_hash_part = guid.generate_guid("bigframes_ordering_")
  ordering_rand_part = guid.generate_guid("bigframes_ordering_")
 
+ # All inputs into hash must be non-null or resulting hash will be null
  str_values = list(
- map(lambda col: _convert_to_string(table[col]), table.columns)
+ map(lambda col: _convert_to_nonnull_string(table[col]), table.columns)
  )
  full_row_str = (
  str_values[0].concat(*str_values[1:])
@@ -1419,7 +1420,7 @@ def _can_cluster_bq(field: bigquery.SchemaField):
  )
 
 
-def _convert_to_string(column: ibis_types.Column) -> ibis_types.StringColumn:
+def _convert_to_nonnull_string(column: ibis_types.Column) -> ibis_types.StringValue:
  col_type = column.type()
  if (
  col_type.is_numeric()
@@ -1436,4 +1437,6 @@ def _convert_to_string(column: ibis_types.Column) -> ibis_types.StringColumn:
  # TO_JSON_STRING works with all data types, but isn't the most efficient
  # Needed for JSON, STRUCT and ARRAY datatypes
  result = vendored_ibis_ops.ToJsonString(column).to_expr() # type: ignore
- return typing.cast(ibis_types.StringColumn, result)
+ # Escape backslashes and use backslash as delineator
+ escaped = typing.cast(ibis_types.StringColumn, result.fillna("")).replace("\\", "\\\\") # type: ignore
+ return typing.cast(ibis_types.StringColumn, ibis.literal("\\")).concat(escaped)

bigframes/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.14.0"
+__version__ = "0.14.1"

notebooks/generative_ai/bq_dataframes_llm_code_generation.ipynb

@@ -34,7 +34,7 @@
  "<table align=\"left\">\n",
  "\n",
  " <td>\n",
- " <a href=\"https://colab.research.google.com/github/googleapis/python-bigquery-dataframes/tree/main/notebooks/generative_ai/bq_dataframes_llm_code_generation.ipynb\">\n",
+ " <a href=\"https://colab.research.google.com/github/googleapis/python-bigquery-dataframes/blob/main/notebooks/generative_ai/bq_dataframes_llm_code_generation.ipynb\">\n",
  " <img src=\"https://cloud.google.com/ml-engine/images/colab-logo-32px.png\" alt=\"Colab logo\"> Run in Colab\n",
  " </a>\n",
  " </td>\n",