redshift: remove redshift_use_show_apis behavior flag

CLAUDE.md

@@ -211,7 +211,7 @@ Extends `PostgresAdapter`. Uses `redshift_connector` (>=2.1.8,<2.2).
 
 **Auth providers:** `IAMRoleAuthProvider`, `BrowserIdentityCenterAuthProvider`
 
-**Behavior flag:** `REDSHIFT_USE_SHOW_APIS` in `impl.py` gates SHOW TABLES / SVV_* APIs vs legacy PostgreSQL catalog queries. Jinja: `redshift__use_show_apis()`. Python: `adapter.use_show_apis()`.
+**Datasharing:** The `datasharing` profile credential gates SHOW TABLES / SVV_* APIs vs legacy PostgreSQL catalog queries (required for cross-database operations). Jinja: `redshift__use_show_apis()`. Python: `adapter.use_show_apis()`.
 
 **Extra test command:** `hatch run integration-tests-flaky` (runs flaky tests sequentially)
 

dbt-redshift/.changes/unreleased/Breaking Changes-20260428-120000.yaml

@@ -0,0 +1,6 @@
+kind: Breaking Changes
+body: Remove the `redshift_use_show_apis` behavior flag. Use the `datasharing` profile credential instead to enable SHOW/SVV_* APIs for cross-database Datasharing support.
+time: 2026-04-28T12:00:00.000000+05:30
+custom:
+    Author: tauhid621
+    Issue: "1621"

dbt-redshift/src/dbt/adapters/redshift/impl.py

@@ -53,15 +53,6 @@
     ),
 )
 
-REDSHIFT_USE_SHOW_APIS = BehaviorFlag(
-    name="redshift_use_show_apis",
-    default=False,
-    description=(
-        "Use Redshift SVV_* system views instead of PostgreSQL catalog tables "
-        "for metadata queries. Required for cross-database operations with Datasharing. "
-    ),
-)
-
 REDSHIFT_GRANTS_EXTENDED = BehaviorFlag(
     name="redshift_grants_extended",
     default=False,
@@ -149,20 +140,10 @@ def __init__(self, config, mp_context: SpawnContext) -> None:
             lambda: self.behavior.redshift_skip_autocommit_transaction_statements.no_warn
         )
 
-        if (
-            self.behavior.redshift_use_show_apis.no_warn
-            and not self.config.credentials.datasharing
-        ):
-            logger.debug(
-                "The `redshift_use_show_apis` behavior flag has been replaced by the `datasharing` profile configuration. "
-                "Please migrate to `datasharing` as this flag will be removed in a future release."
-            )
-
     @property
     def _behavior_flags(self) -> List[BehaviorFlag]:
         return [
             REDSHIFT_SKIP_AUTOCOMMIT_TRANSACTION_STATEMENTS,
-            REDSHIFT_USE_SHOW_APIS,
             REDSHIFT_GRANTS_EXTENDED,
         ]
 
@@ -214,13 +195,9 @@ def convert_time_type(cls, agate_table: "agate.Table", col_idx):
     def use_show_apis(self) -> bool:
         """Whether to use Redshift SHOW/SVV_* APIs for metadata queries.
 
-        Returns True when the ``datasharing`` profile config is enabled
-        or the ``redshift_use_show_apis`` behavior flag is set.
+        Returns True when the ``datasharing`` profile config is enabled.
         """
-        return (
-            bool(self.config.credentials.datasharing)
-            or self.behavior.redshift_use_show_apis.no_warn
-        )
+        return bool(self.config.credentials.datasharing)
 
     @available
     def drop_without_cascade(self) -> bool:
@@ -245,7 +222,7 @@ def verify_database(self, database):
 
         if database.lower() != expected.lower() and not ra3_node and not self.use_show_apis():
             raise dbt_common.exceptions.NotImplementedError(
-                "Cross-db references allowed only in RA3.* node. ({} vs {})".format(
+                "Cross-db references allowed only in RA3.* node or with datasharing enabled. ({} vs {})".format(
                     database, expected
                 )
             )

dbt-redshift/tests/unit/test_calculate_freshness_from_metadata_batch.py

@@ -28,7 +28,6 @@ def relation(database, schema, identifier):
 def adapter(mocker):
     a = RedshiftAdapter(mocker.MagicMock(), mocker.MagicMock())
     a.config.credentials.datasharing = True
-    a.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=False)
     return a
 
 

dbt-redshift/tests/unit/test_standardize_grants_dict.py

@@ -46,9 +46,8 @@ def adapter(mocker):
     mock_config.flags = {}
     mock_mp_context = mocker.MagicMock()
     a = RedshiftAdapter(mock_config, mock_mp_context)
-    # Explicit defaults: extended off, show_apis off.  Individual test classes override as needed.
+    # Explicit defaults: extended off, datasharing off.  Individual test classes override as needed.
     a.behavior.redshift_grants_extended = mocker.MagicMock(no_warn=False)
-    a.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=False)
     return a
 
 
@@ -58,7 +57,6 @@ class TestStandardizeGrantsDictShowApi:
     @pytest.fixture(autouse=True)
     def set_flags(self, adapter, mocker):
         adapter.behavior.redshift_grants_extended = mocker.MagicMock(no_warn=True)
-        adapter.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=True)
         adapter.config.credentials.datasharing = True
 
     def test_includes_all_privileges(self, adapter):
@@ -320,7 +318,6 @@ class TestStandardizeGrantsDictSvv:
     @pytest.fixture(autouse=True)
     def set_flags(self, adapter, mocker):
         adapter.behavior.redshift_grants_extended = mocker.MagicMock(no_warn=True)
-        adapter.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=False)
         adapter.config.credentials.datasharing = False
 
     def test_distinguishes_users_groups_roles(self, adapter):
@@ -389,7 +386,6 @@ class TestStandardizeGrantsDictLegacyNoShowApis:
     @pytest.fixture(autouse=True)
     def set_flags(self, adapter, mocker):
         adapter.behavior.redshift_grants_extended = mocker.MagicMock(no_warn=False)
-        adapter.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=False)
         adapter.config.credentials.datasharing = False
 
     def test_returns_plain_names(self, adapter):
@@ -423,7 +419,6 @@ class TestStandardizeGrantsDictLegacyWithShowApis:
     @pytest.fixture(autouse=True)
     def set_flags(self, adapter, mocker):
         adapter.behavior.redshift_grants_extended = mocker.MagicMock(no_warn=False)
-        adapter.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=True)
         adapter.config.credentials.datasharing = True
 
     def test_returns_plain_identity_names(self, adapter):

dbt-redshift/tests/unit/test_verify_database.py

@@ -49,7 +49,3 @@ def test_cross_db_blocked_without_either_config(self, adapter):
         adapter.config.credentials.datasharing = False
         with pytest.raises(dbt_common.exceptions.NotImplementedError, match="Cross-db"):
             adapter.verify_database("other_db")
-
-    def test_cross_db_allowed_with_show_apis_flag(self, adapter, mocker):
-        adapter.behavior.redshift_use_show_apis = mocker.MagicMock(no_warn=True)
-        assert adapter.verify_database("other_db") == ""