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Fix incompatible schema errors when streaming table source schema evolves #1304

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Fix incompatible schema errors when streaming table source schema evolves #1304

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b5c21a1
Remove redundant temporary view creation before streaming table creation
adam-staros95 Jan 19, 2026
3465c0e
Merge branch 'main' into fix/streaming-table-fails-on-schema-evolution
benc-db Jan 21, 2026
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19 changes: 0 additions & 19 deletions dbt/include/databricks/macros/relations/streaming_table/create.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -9,26 +9,7 @@
{%- set comment = streaming_table.config["comment"].comment -%}
{%- set refresh = streaming_table.config["refresh"] -%}

{%- set analysis_sql = sql | replace('STREAM ', '') | replace('stream ', '') -%}

{#
TODO: When DESCRIBE QUERY EXTENDED is supported, this implementation should be simplified
to use that instead. For now, we work around this limitation by writing results to a
temporary view and using DESCRIBE TABLE EXTENDED on the temporary view.
#}
{%- set temp_relation = make_temp_relation(relation) -%}
{% call statement('create_temp_view') -%}
{%- set view_sql = analysis_sql.rstrip('; \n\t') -%}
{{ create_temporary_view(temp_relation, view_sql) }}
{%- endcall %}

{%- set columns = adapter.get_columns_in_relation(temp_relation) -%}
{%- set model_columns = model.get('columns', {}) -%}
{%- set columns_and_constraints = adapter.parse_columns_and_constraints(columns, model_columns, []) -%}

{#-- We don't enrich the relation with model constraints because they are not supported for streaming tables --#}
CREATE STREAMING TABLE {{ relation.render() }}
{{ get_column_and_constraints_sql(relation, columns_and_constraints[0]) }}
{{ get_create_sql_partition_by(partition_by) }}
{{ liquid_clustered_cols() }}
{{ get_create_sql_comment(comment) }}
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