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- delete from [dbo].[lonindata] where isnull([datetime],'')=''
- ALTER TABLE [dbo].[lonindata] ALTER COLUMN [datetime] nvarchar(50) NOT NULL
- ALTER TABLE [dbo].[lonindata] ADD CONSTRAINT [PK_lonindata] PRIMARY KEY CLUSTERED ([datetime] ASC)WITH (PAD_INDEX = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF) ON [PRIMARY]
- delete from dbo.lonindata
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