MySQL query statement processing results - enumeration fields

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语法：CASE [COLUMN_] WHEN [situation] THEN .... END AS [NEW_NAME]

SELECT o.WMIO_CODE,
CASE o.WMIO_TYPE
WHEN 0 THEN 'Return in storage'
WHEN 1 THEN 'Restocking'
WHEN 2 THEN 'Transfer into warehouse' END AS WMIO_TYPE,
o.WMIO_CUSTOMER_NAME,
o.WMIO_RECEIPT_NUM,
o.WMIO_REJECT_NUM,
o.WMIO_ANALYSISOR,
o.WMIO_ANALYSIS_TIME
FROM wm_into_order_10000 o WHERE o.WMIO_CODE = 'I10000025160923002'

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