65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
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# -*- coding: utf-8 -*-
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"""迁移脚本：为非空邮箱补充唯一索引。"""
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import logging
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from sqlalchemy import text
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from insurance.db.compat import db
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def migrate():
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"""创建 wecom_user_mapping.email 非空唯一索引。"""
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try:
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from sqlalchemy import inspect
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inspector = inspect(db.engine)
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if not inspector.has_table("wecom_user_mapping"):
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logging.info("wecom_user_mapping 表不存在，跳过邮箱唯一索引")
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return
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user_columns = {col["name"] for col in inspector.get_columns("wecom_user_mapping")}
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if "email" not in user_columns:
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logging.info("wecom_user_mapping.email 字段不存在，跳过邮箱唯一索引")
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return
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index_names = {idx["name"] for idx in inspector.get_indexes("wecom_user_mapping")}
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if "idx_wecom_user_mapping_email_unique" in index_names:
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logging.info("邮箱唯一索引已存在，跳过创建")
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return
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duplicate_email = db.session.execute(text("""
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SELECT email
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FROM wecom_user_mapping
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WHERE email IS NOT NULL AND email <> ''
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GROUP BY email
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HAVING COUNT(*) > 1
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LIMIT 1
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""")).fetchone()
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if duplicate_email:
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logging.warning(
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"wecom_user_mapping 存在重复邮箱 %s，跳过邮箱唯一索引创建",
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duplicate_email[0],
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)
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return
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db.session.execute(text("""
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CREATE UNIQUE INDEX IF NOT EXISTS idx_wecom_user_mapping_email_unique
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ON wecom_user_mapping (email)
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WHERE email IS NOT NULL AND email <> ''
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"""))
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db.session.commit()
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logging.info("成功创建 wecom_user_mapping.email 唯一索引")
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except Exception as e:
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logging.error("创建邮箱唯一索引失败: %s", e)
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db.session.rollback()
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raise
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def downgrade():
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"""删除邮箱唯一索引。"""
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try:
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db.session.execute(text("DROP INDEX IF EXISTS idx_wecom_user_mapping_email_unique"))
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db.session.commit()
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except Exception as e:
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logging.error("删除邮箱唯一索引失败: %s", e)
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db.session.rollback()
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raise
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