"""add_parameter_table

Revision ID: 3f2e574cefad
Revises: 92ec1d480a3c
Create Date: 2025-07-11 15:29:01.868419

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '3f2e574cefad'
down_revision = '92ec1d480a3c'
branch_labels = None
depends_on = None


def upgrade():
    """升级数据库到当前版本"""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('Parameters',
    sa.Column('ID', sa.Integer(), autoincrement=True, nullable=False),
    sa.Column('F1', sa.Float(), nullable=True, comment='活性SOM的占比系数'),
    sa.Column('F2', sa.Float(), nullable=True, comment='HA占比系数'),
    sa.Column('F3', sa.Float(), nullable=True, comment='氮肥镉含量平均值(mg/kg)'),
    sa.Column('F4', sa.Float(), nullable=True, comment='磷肥镉含量平均值(mg/kg)'),
    sa.Column('F5', sa.Float(), nullable=True, comment='钾肥镉含量平均值(mg/kg)'),
    sa.Column('F6', sa.Float(), nullable=True, comment='复合肥镉含量平均值(mg/kg)'),
    sa.Column('F7', sa.Float(), nullable=True, comment='有机肥镉含量平均值(mg/kg)'),
    sa.Column('F8', sa.Float(), nullable=True, comment='农药镉含量(mg/kg)'),
    sa.Column('F9', sa.Float(), nullable=True, comment='农家肥镉含量(mg/kg)'),
    sa.Column('F10', sa.Float(), nullable=True, comment='农膜镉含量(mg/kg)'),
    sa.Column('F11', sa.Float(), nullable=True, comment='作物亩产量(斤)'),
    sa.Column('NF', sa.Float(), nullable=True, comment='氮肥单位面积使用量(t/ha/a)'),
    sa.Column('PF', sa.Float(), nullable=True, comment='磷肥单位面积使用量(t/ha/a)'),
    sa.Column('KF', sa.Float(), nullable=True, comment='钾肥单位面积使用量(t/ha/a)'),
    sa.Column('CF', sa.Float(), nullable=True, comment='复合肥单位面积使用量(t/ha/a)'),
    sa.Column('OF', sa.Float(), nullable=True, comment='有机肥单位面积使用量(t/ha/a)'),
    sa.Column('P', sa.Float(), nullable=True, comment='农药单位面积使用量(t/ha/a)'),
    sa.Column('FF', sa.Float(), nullable=True, comment='农家肥单位面积使用量(t/ha/a)'),
    sa.Column('AF', sa.Float(), nullable=True, comment='农膜(存留)单位面积使用量(t/ha/a)'),
    sa.Column('Area', sa.String(length=50), nullable=True, comment='地区'),
    sa.PrimaryKeyConstraint('ID')
    )
    # ### end Alembic commands ###


def downgrade():
    """将数据库降级到上一版本"""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_table('Parameters')
    # ### end Alembic commands ###