查询数据1

app/models/section_data.py

@@ -1,5 +1,6 @@
-from sqlalchemy import Column, Integer, String
+from sqlalchemy import Column, Integer, String, List
 from ..core.database import Base
+from .checkpoint import Checkpoint
 
 class SectionData(Base):
     __tablename__ = "section_data"
@@ -12,4 +13,6 @@ class SectionData(Base):
     status = Column(String(100), nullable=False, comment="断面状态")
     number = Column(String(100), nullable=False, comment="所在桥梁墩(台)编号", index=True)
     transition_paragraph = Column(String(100), comment="过渡段")
-    section_id = Column(String(100), nullable=False, comment="断面id", index=True)
+    section_id = Column(String(100), nullable=False, comment="断面id", index=True)
+
+    Checkpoints = List[Checkpoint]