=== 数据库字段测试 ===

1. 表结构:
  - protein_id (varchar(255))
  - sequence (varchar(1000))
  - enzyme_name (varchar(255))
  - ec_number (varchar(255))
  - gene_name (varchar(255))
  - host_organism (varchar(255))
  - taxonomy (varchar(255))
  - genbank_ids (varchar(255))
  - uniprot_ids (varchar(255))
  - pdb_ids (varchar(255))
  - refseq_ids (varchar(255))
  - reference (varchar(2000))
  - source_name (varchar(255))
  - sequence_source (varchar(255))
  - structure_source (varchar(255))
  - ec_number_source (varchar(255))
  - can_degrade_ECOFLEX (int(11))
  - can_degrade_ECOVIO_FT (int(11))
  - can_degrade_Impranil (int(11))
  - can_degrade_NR (int(11))
  - can_degrade_O_PVA (int(11))
  - can_degrade_P(3HB_co_3MP) (int(11))
  - can_degrade_P3HP (int(11))
  - can_degrade_P3HV (int(11))
  - can_degrade_P4HB (int(11))
  - can_degrade_PA (int(11))
  - can_degrade_PBAT (int(11))
  - can_degrade_PBS (int(11))
  - can_degrade_PBSA (int(11))
  - can_degrade_PBSeT (int(11))
  - can_degrade_PCL (int(11))
  - can_degrade_PE (int(11))
  - can_degrade_PEA (int(11))
  - can_degrade_PEF (int(11))
  - can_degrade_PEG (int(11))
  - can_degrade_PES (int(11))
  - can_degrade_PET (int(11))
  - can_degrade_PHB (int(11))
  - can_degrade_PHBH (int(11))
  - can_degrade_PHBV (int(11))
  - can_degrade_PHBVH (int(11))
  - can_degrade_PHO (int(11))
  - can_degrade_PHPV (int(11))
  - can_degrade_PHV (int(11))
  - can_degrade_PLA (int(11))
  - can_degrade_PMCL (int(11))
  - can_degrade_PPL (int(11))
  - can_degrade_PS (int(11))
  - can_degrade_PU (int(11))
  - can_degrade_PVA (int(11))
  - PLZ_ID (varchar(255))
  - predicted_ec_number (varchar(255))
  - ec_prediction_source (varchar(255))

2. 塑料类型样本:
错误: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'plastic' in 'field list'