From a5d2b69c9fdce1ad7f304208779f06f018c1b7fd Mon Sep 17 00:00:00 2001
From: Temidayo Akindahunsi <98013820+TemidayoA@users.noreply.github.com>
Date: Thu, 4 Jun 2026 11:10:30 +0100
Subject: [PATCH 1/2] fix: deduplicate sql metric aliases to prevent view
 schema collisions (#10926)

---
 .../sqlalchemy_execution_engine.py                | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/great_expectations/execution_engine/sqlalchemy_execution_engine.py b/great_expectations/execution_engine/sqlalchemy_execution_engine.py
index f14c281dad26..8ed2a18bf227 100644
--- a/great_expectations/execution_engine/sqlalchemy_execution_engine.py
+++ b/great_expectations/execution_engine/sqlalchemy_execution_engine.py
@@ -1187,8 +1187,21 @@ def _organize_metrics_by_domain(  # noqa: C901 # FIXME
                 )
                 domain_batches[domain_id]["metric_ids"].append(metric_to_resolve.id)
             else:
+                alias = metric_to_resolve.metric_name
+                
+                # Prevent "Duplicated field name in view schema" SQL errors by deduplicating aliases
+                existing_aliases = {
+                    col.name for col in domain_batches[domain_id]["select"] if hasattr(col, "name")
+                }
+                
+                if alias in existing_aliases:
+                    suffix = 1
+                    while f"{alias}_{suffix}" in existing_aliases:
+                        suffix += 1
+                    alias = f"{alias}_{suffix}"
+
                 domain_batches[domain_id]["select"].append(
-                    metric_fn.label(metric_to_resolve.metric_name)
+                    metric_fn.label(alias)
                 )
                 domain_batches[domain_id]["metric_ids"].append(metric_to_resolve.id)
 

From 6c8957f8104bc7b51010757969f23d581ae82061 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Thu, 4 Jun 2026 10:18:12 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 .../execution_engine/sqlalchemy_execution_engine.py       | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/great_expectations/execution_engine/sqlalchemy_execution_engine.py b/great_expectations/execution_engine/sqlalchemy_execution_engine.py
index 8ed2a18bf227..1b90a97c95c2 100644
--- a/great_expectations/execution_engine/sqlalchemy_execution_engine.py
+++ b/great_expectations/execution_engine/sqlalchemy_execution_engine.py
@@ -1188,21 +1188,19 @@ def _organize_metrics_by_domain(  # noqa: C901 # FIXME
                 domain_batches[domain_id]["metric_ids"].append(metric_to_resolve.id)
             else:
                 alias = metric_to_resolve.metric_name
-                
+
                 # Prevent "Duplicated field name in view schema" SQL errors by deduplicating aliases
                 existing_aliases = {
                     col.name for col in domain_batches[domain_id]["select"] if hasattr(col, "name")
                 }
-                
+
                 if alias in existing_aliases:
                     suffix = 1
                     while f"{alias}_{suffix}" in existing_aliases:
                         suffix += 1
                     alias = f"{alias}_{suffix}"
 
-                domain_batches[domain_id]["select"].append(
-                    metric_fn.label(alias)
-                )
+                domain_batches[domain_id]["select"].append(metric_fn.label(alias))
                 domain_batches[domain_id]["metric_ids"].append(metric_to_resolve.id)
 
         for domain_id in list(domain_batches.keys()):