• 1. re-order code: 序号

• 1.If you want those three predicates applied in the exact order in which you code them, you must drop and re-create the index (or create a new index) on (COLA, COLC, COLB).
  如果您想那三个谓词完全按照它们的编码顺序应用，则必须删除并在(COLA, COLC, COLB)上重建索引(或者创建一个新索引)。
  dict.yoduao.com

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