feat: honor omit_unused_structs (#74)

Port Go's filterUnusedStructs so unused table and enum models
are omitted from models.py. Bump CI/goldens to sqlc 1.30.0.

Author: aimestereo

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
         go-version: '1.23.5'
     - uses: sqlc-dev/setup-sqlc@v4
       with:
-        sqlc-version: '1.28.0'
+        sqlc-version: '1.30.0'
     - run: make
     - run: make test
     - run: sqlc diff

README.md

@@ -76,3 +76,9 @@ class Status(str, enum.Enum):
     OPEN = "op!en"
     CLOSED = "clo@sed"
 ```
+
+### Omit unused table and enum structs
+
+Option: `omit_unused_structs`
+
+If `true`, sqlc won't generate table and enum structs that aren't used in queries for a given package.

examples/src/authors/models.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 import dataclasses
 from typing import Optional
 

examples/src/authors/query.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 # source: query.sql
 from typing import AsyncIterator, Iterator, Optional
 

examples/src/booktest/models.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 import dataclasses
 import datetime
 import enum

examples/src/booktest/query.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 # source: query.sql
 import dataclasses
 import datetime

examples/src/jets/models.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 import dataclasses
 
 

examples/src/jets/query-building.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 # source: query-building.sql
 from typing import AsyncIterator, Optional
 

examples/src/ondeck/city.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 # source: city.sql
 from typing import AsyncIterator, Optional
 

examples/src/ondeck/models.py

@@ -1,6 +1,6 @@
 # Code generated by sqlc. DO NOT EDIT.
 # versions:
-#   sqlc v1.28.0
+#   sqlc v1.30.0
 import dataclasses
 import datetime
 import enum