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更新时间:2019-09-18 13:14:01

  1. explain_stmt:
  2. explain_key table_name [column_name]
  3. | explain_key [explain_type] explainable_stmt
  4. explain_key:
  5. {EXPLAIN | DESCRIBE | DESC}
  6. explain_type:
  7. BASIC
  8. | OUTLINE
  9. | EXTENDED
  10. | EXTENDED_NOADDR
  11. | PLANREGRESS
  12. | PARTITIONS
  13. | FORMAT = {TRADITIONAL | JSON}
  14. explainable_stmt:
  15. select_stmt
  16. | insert_stmt
  17. | update_stmt
  18. | delete_stmt
  19. | replace_stmt