select inv.*,m.machining_tp, m.machining_type,strain_name from sys_process_inv inv LEFT JOIN sys_machining m ON m.id = inv.product_id LEFT JOIN sys_strain strain ON strain.id = inv.strain_id where inv.is_deleted = 0 SELECT id,strain_id,product_id,product_inventory_num,create_time,update_user,update_time,status,is_deleted FROM sys_process_inv WHERE strain_id = #{strainId} AND product_id = #{productId} INSERT INTO sys_process_inv (strain_id,product_id,product_inventory_num,create_time,status,is_deleted) VALUES (#{processInv.strainId},#{processInv.productId},#{processInv.productInventoryNum},NOW(),1,0) SELECT CASE WHEN product_inventory_num > #{saleNum} THEN TRUE ELSE FALSE END result FROM sys_process_inv WHERE id = #{proid} UPDATE sys_process_inv SET product_inventory_num = product_inventory_num - #{saleNum} WHERE id = #{proid} DELETE FROM sys_process_inv WHERE id = #{id}