SELECT
phone,
concat(
substring(phone, 1, 3),
'****',
substring(phone, 8, 4)
) phone_new
FROM
dw_user
WHERE
phone IS NOT NULL
AND phone <> ''
LIMIT 100,
5
sql 字段街区拼接
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转载自cooler1217.iteye.com/blog/2236798
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