from sqlalchemy import Column, Text, BigInteger, TIMESTAMP, VARCHAR, ForeignKey
from sqlalchemy.orm import declarative_base

Base = declarative_base()


class KeywordClustering(Base):
    __tablename__ = "keyword_clustering"

    id = Column(BigInteger, primary_key=True, autoincrement=True, comment="主键id")
    keyword_id = Column(BigInteger, nullable=False, comment="关键词id")
    keyword_summary = Column(Text, nullable=True, comment="关键词知识")
    create_time = Column(TIMESTAMP, nullable=False, server_default="CURRENT_TIMESTAMP", comment="创建时间")
    update_time = Column(TIMESTAMP, nullable=False, server_default="CURRENT_TIMESTAMP", onupdate="CURRENT_TIMESTAMP",
                         comment="更新时间")