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实践积累/数据库/循环遍历插数据.md

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+```sql
+declare @x numeric(18,2) --X
+declare @dt datetime --时间
+declare @gpsindex numeric(18,2) --GPSIndex
+declare @rand float --随机数
+declare @count int --计数
+
+set @x = 0
+set @count = 1
+set @dt = '2018-07-02 12:00:00'
+
+```
+while(@dt < getdate()) begin
+
+```sql
+set @gpsindex = convert(bigint, datediff(ss, '1970-01-01 00:00:00', @dt))*1000 + datepart(ms,@dt)
+
+
+insert into [ZHDMTProj].[dbo].[Flowmeter01]([GPSIndex],[aDatetime],[X]) values(@gpsindex, @dt, @x) --目标表
+```
+--****************
+```sql
+set @count = @count + 1
+set @dt = DATEADD(ss,15,@dt) --每次递增30秒
+```
+end