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Snapshot structure changes #194

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Snapshot structure changes #194

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f42ab4a
Update code for create_columns and get_true_sql macros
septimit Sep 5, 2024
60b984a
Merge pull request #193 from septimit/snapshot_structure_changes
tallamohan Sep 5, 2024
421c5e9
testcase for snapshot with schema change
VarunSharma15 Nov 13, 2024
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21 changes: 16 additions & 5 deletions dbt/include/teradata/macros/materializations/snapshot/helpers.sql
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Original file line number Diff line number Diff line change
@@ -1,3 +1,19 @@
{% macro teradata__create_columns(relation, columns) %}
{% for column in columns %}
{% call statement() %}
alter table {{ relation.render() }} add "{{ column.name }}" {{ column.data_type }};
{% endcall %}
{% endfor %}
{% endmacro %}

{% macro teradata__post_snapshot(staging_relation) %}
{{ adapter.dispatch('drop_relation', 'dbt')(staging_relation) }}
{% endmacro %}

{% macro teradata__get_true_sql() %}
{{ return('1 = 1') }}
{% endmacro %}

{% macro teradata__snapshot_staging_table(strategy, source_sql, target_relation) -%}

with snapshot_query as (
Expand Down Expand Up @@ -125,8 +141,3 @@
) sbq

{% endmacro %}

{% macro teradata__post_snapshot(staging_relation) %}
{{ adapter.dispatch('drop_relation', 'dbt')(staging_relation) }}
{% endmacro %}

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