Serial number generation rules:
1: The total length of the serial number is 22 digits
2: The serial number is divided into three parts: header (2 digits) + timestamp (YYYYMMDDHHmmSSsss a total of 17 digits) + random code (3 digits)
Example serial number: SN20150812102400111234
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7
8
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--获取时间戳
select
convert
(
varchar
,
replace
(
replace
(
replace
(
replace
(
convert
(
varchar
,getdate(),121),
'-'
,
''
),
':'
,
''
),
' '
,
''
),
'.'
,
''
))
--结果：20150703114447613
--获取随机码
select
substring
(
convert
(
varchar
,rand()),3,3)
--结果：813
--获取完整的流水号
SELECT
'SN'
+
convert
(
varchar
,
replace
(
replace
(
replace
(
replace
(
convert
(
varchar
,getdate(),121),
'-'
,
''
),
':'
,
''
),
' '
,
''
),
'.'
,
''
))+
substring
(
convert
(
varchar
,rand()),3,3)
--结果：SN20150703114447613813
|
Reprinted from: https://www.cnblogs.com/DBArtist/p/SerialNumber.html