chore: view_cte test case

testdata/diff/create_view/add_view/diff.sql

@@ -7,6 +7,39 @@ CREATE OR REPLACE VIEW array_operators_view AS
     CASE WHEN priority <> ANY (ARRAY[1, 2, 3]) THEN 'different' ELSE 'same' END AS not_equal_any_test
    FROM employees;
 
+CREATE OR REPLACE VIEW cte_with_case_view AS
+ WITH monthly_stats AS (
+         SELECT date_trunc('month'::text, CURRENT_DATE - ((n.n || ' months'::text)::interval)) AS month_start,
+            n.n AS month_offset
+           FROM generate_series(0, 11) n(n)
+        ), employee_summary AS (
+         SELECT employees.department_id,
+            count(*) AS employee_count,
+            avg(employees.priority) AS avg_priority
+           FROM employees
+          WHERE employees.status::text = 'active'::text
+          GROUP BY employees.department_id
+        )
+ SELECT ms.month_start,
+    ms.month_offset,
+    d.name AS department_name,
+    COALESCE(es.employee_count, 0::bigint) AS employee_count,
+        CASE
+            WHEN es.avg_priority > 50::numeric THEN 'high'::text
+            WHEN es.avg_priority > 25::numeric THEN 'medium'::text
+            WHEN es.avg_priority IS NOT NULL THEN 'low'::text
+            ELSE 'no_data'::text
+        END AS priority_level,
+        CASE
+            WHEN ms.month_offset = 0 THEN 'current'::text
+            WHEN ms.month_offset <= 3 THEN 'recent'::text
+            ELSE 'historical'::text
+        END AS period_type
+   FROM monthly_stats ms
+     CROSS JOIN departments d
+     LEFT JOIN employee_summary es ON d.id = es.department_id
+  ORDER BY ms.month_start DESC, d.name;
+
 CREATE OR REPLACE VIEW nullif_functions_view AS
  SELECT e.id,
     e.name AS employee_name,

testdata/diff/create_view/add_view/new.sql

@@ -61,4 +61,44 @@ SELECT
     END AS assignment_status
 FROM employees e
 JOIN departments d USING (id)
-WHERE e.priority > 0;
+WHERE e.priority > 0;
+
+-- View testing CTEs with CASE statements (regression test for issue #106)
+CREATE VIEW public.cte_with_case_view AS
+WITH monthly_stats AS (
+    SELECT
+        date_trunc('month', CURRENT_DATE - (n || ' months')::INTERVAL) AS month_start,
+        n AS month_offset
+    FROM generate_series(0, 11) AS n
+),
+employee_summary AS (
+    SELECT
+        department_id,
+        COUNT(*) AS employee_count,
+        AVG(priority) AS avg_priority
+    FROM employees
+    WHERE status = 'active'
+    GROUP BY department_id
+)
+SELECT
+    ms.month_start,
+    ms.month_offset,
+    d.name AS department_name,
+    COALESCE(es.employee_count, 0) AS employee_count,
+    -- CASE statement using CTE data (triggers the bug from #106)
+    CASE
+        WHEN es.avg_priority > 50 THEN 'high'
+        WHEN es.avg_priority > 25 THEN 'medium'
+        WHEN es.avg_priority IS NOT NULL THEN 'low'
+        ELSE 'no_data'
+    END AS priority_level,
+    -- Another CASE with CTE
+    CASE
+        WHEN ms.month_offset = 0 THEN 'current'
+        WHEN ms.month_offset <= 3 THEN 'recent'
+        ELSE 'historical'
+    END AS period_type
+FROM monthly_stats ms
+CROSS JOIN departments d
+LEFT JOIN employee_summary es ON d.id = es.department_id
+ORDER BY ms.month_start DESC, d.name;

testdata/diff/create_view/add_view/plan.json

@@ -14,6 +14,12 @@
           "operation": "create",
           "path": "public.array_operators_view"
         },
+        {
+          "sql": "CREATE OR REPLACE VIEW cte_with_case_view AS\n WITH monthly_stats AS (\n         SELECT date_trunc('month'::text, CURRENT_DATE - ((n.n || ' months'::text)::interval)) AS month_start,\n            n.n AS month_offset\n           FROM generate_series(0, 11) n(n)\n        ), employee_summary AS (\n         SELECT employees.department_id,\n            count(*) AS employee_count,\n            avg(employees.priority) AS avg_priority\n           FROM employees\n          WHERE employees.status::text = 'active'::text\n          GROUP BY employees.department_id\n        )\n SELECT ms.month_start,\n    ms.month_offset,\n    d.name AS department_name,\n    COALESCE(es.employee_count, 0::bigint) AS employee_count,\n        CASE\n            WHEN es.avg_priority > 50::numeric THEN 'high'::text\n            WHEN es.avg_priority > 25::numeric THEN 'medium'::text\n            WHEN es.avg_priority IS NOT NULL THEN 'low'::text\n            ELSE 'no_data'::text\n        END AS priority_level,\n        CASE\n            WHEN ms.month_offset = 0 THEN 'current'::text\n            WHEN ms.month_offset <= 3 THEN 'recent'::text\n            ELSE 'historical'::text\n        END AS period_type\n   FROM monthly_stats ms\n     CROSS JOIN departments d\n     LEFT JOIN employee_summary es ON d.id = es.department_id\n  ORDER BY ms.month_start DESC, d.name;",
+          "type": "view",
+          "operation": "create",
+          "path": "public.cte_with_case_view"
+        },
         {
           "sql": "CREATE OR REPLACE VIEW nullif_functions_view AS\n SELECT e.id,\n    e.name AS employee_name,\n    d.name AS department_name,\n    (e.priority - d.manager_id) / NULLIF(d.manager_id, 0) AS priority_ratio,\n    NULLIF(e.status::text, 'inactive'::text) AS active_status,\n    NULLIF(e.email::text, ''::text) AS valid_email,\n    GREATEST(e.priority, 0) AS min_priority,\n    LEAST(e.priority, 100) AS max_priority,\n    GREATEST(e.id, d.id, e.department_id) AS max_id,\n        CASE\n            WHEN NULLIF(e.department_id, 0) IS NOT NULL THEN 'assigned'::text\n            ELSE 'unassigned'::text\n        END AS assignment_status\n   FROM employees e\n     JOIN departments d USING (id)\n  WHERE e.priority > 0;",
           "type": "view",

testdata/diff/create_view/add_view/plan.sql

@@ -7,6 +7,39 @@ CREATE OR REPLACE VIEW array_operators_view AS
     CASE WHEN priority <> ANY (ARRAY[1, 2, 3]) THEN 'different' ELSE 'same' END AS not_equal_any_test
    FROM employees;
 
+CREATE OR REPLACE VIEW cte_with_case_view AS
+ WITH monthly_stats AS (
+         SELECT date_trunc('month'::text, CURRENT_DATE - ((n.n || ' months'::text)::interval)) AS month_start,
+            n.n AS month_offset
+           FROM generate_series(0, 11) n(n)
+        ), employee_summary AS (
+         SELECT employees.department_id,
+            count(*) AS employee_count,
+            avg(employees.priority) AS avg_priority
+           FROM employees
+          WHERE employees.status::text = 'active'::text
+          GROUP BY employees.department_id
+        )
+ SELECT ms.month_start,
+    ms.month_offset,
+    d.name AS department_name,
+    COALESCE(es.employee_count, 0::bigint) AS employee_count,
+        CASE
+            WHEN es.avg_priority > 50::numeric THEN 'high'::text
+            WHEN es.avg_priority > 25::numeric THEN 'medium'::text
+            WHEN es.avg_priority IS NOT NULL THEN 'low'::text
+            ELSE 'no_data'::text
+        END AS priority_level,
+        CASE
+            WHEN ms.month_offset = 0 THEN 'current'::text
+            WHEN ms.month_offset <= 3 THEN 'recent'::text
+            ELSE 'historical'::text
+        END AS period_type
+   FROM monthly_stats ms
+     CROSS JOIN departments d
+     LEFT JOIN employee_summary es ON d.id = es.department_id
+  ORDER BY ms.month_start DESC, d.name;
+
 CREATE OR REPLACE VIEW nullif_functions_view AS
  SELECT e.id,
     e.name AS employee_name,

testdata/diff/create_view/add_view/plan.txt

@@ -1,10 +1,11 @@
-Plan: 3 to add.
+Plan: 4 to add.
 
 Summary by type:
-  views: 3 to add
+  views: 4 to add
 
 Views:
   + array_operators_view
+  + cte_with_case_view
   + nullif_functions_view
   + text_search_view
 
@@ -20,6 +21,39 @@ CREATE OR REPLACE VIEW array_operators_view AS
     CASE WHEN priority <> ANY (ARRAY[1, 2, 3]) THEN 'different' ELSE 'same' END AS not_equal_any_test
    FROM employees;
 
+CREATE OR REPLACE VIEW cte_with_case_view AS
+ WITH monthly_stats AS (
+         SELECT date_trunc('month'::text, CURRENT_DATE - ((n.n || ' months'::text)::interval)) AS month_start,
+            n.n AS month_offset
+           FROM generate_series(0, 11) n(n)
+        ), employee_summary AS (
+         SELECT employees.department_id,
+            count(*) AS employee_count,
+            avg(employees.priority) AS avg_priority
+           FROM employees
+          WHERE employees.status::text = 'active'::text
+          GROUP BY employees.department_id
+        )
+ SELECT ms.month_start,
+    ms.month_offset,
+    d.name AS department_name,
+    COALESCE(es.employee_count, 0::bigint) AS employee_count,
+        CASE
+            WHEN es.avg_priority > 50::numeric THEN 'high'::text
+            WHEN es.avg_priority > 25::numeric THEN 'medium'::text
+            WHEN es.avg_priority IS NOT NULL THEN 'low'::text
+            ELSE 'no_data'::text
+        END AS priority_level,
+        CASE
+            WHEN ms.month_offset = 0 THEN 'current'::text
+            WHEN ms.month_offset <= 3 THEN 'recent'::text
+            ELSE 'historical'::text
+        END AS period_type
+   FROM monthly_stats ms
+     CROSS JOIN departments d
+     LEFT JOIN employee_summary es ON d.id = es.department_id
+  ORDER BY ms.month_start DESC, d.name;
+
 CREATE OR REPLACE VIEW nullif_functions_view AS
  SELECT e.id,
     e.name AS employee_name,