103 lines
3.4 KiB
Transact-SQL
103 lines
3.4 KiB
Transact-SQL
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/*定期删除数据存储过程*/
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CREATE PROCEDURE sp_DeleteOldData_Batch
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@BatchSize INT = 10000, -- 每批删除的行数
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@DelayMs INT = 100 -- 每批之间的延迟（毫秒）
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AS
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BEGIN
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SET NOCOUNT ON;
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DECLARE @TotalDeleted INT;
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DECLARE @BatchDeleted INT;
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DECLARE @CutoffDate DATETIME;
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DECLARE @StartTime DATETIME;
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DECLARE @DelayTime VARCHAR(12);
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SET @CutoffDate = DATEADD(YEAR, -1, GETDATE());
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SET @StartTime = GETDATE();
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PRINT '开始删除一年前的数据，截止时间：' + CONVERT(VARCHAR, @CutoffDate, 120);
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BEGIN TRY
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-- ============ 删除 BlankingData ============
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SET @TotalDeleted = 0;
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SET @BatchDeleted = 1;
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PRINT '开始删除 BlankingData 表数据...';
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WHILE @BatchDeleted > 0
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BEGIN
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DELETE TOP (@BatchSize) FROM dbo.BlankingData
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WHERE OutTime < @CutoffDate;
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SET @BatchDeleted = @@ROWCOUNT;
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SET @TotalDeleted = @TotalDeleted + @BatchDeleted;
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-- 每批之间短暂延迟，减少锁争用
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IF @BatchDeleted > 0 AND @DelayMs > 0
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BEGIN
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SET @DelayTime = '00:00:00.' + RIGHT('000' + CAST(@DelayMs AS VARCHAR(3)), 3);
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WAITFOR DELAY @DelayTime;
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END
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END
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PRINT 'BlankingData 表删除完成，共删除 ' + CAST(@TotalDeleted AS VARCHAR) + ' 行。';
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-- ============ 删除 FeedingData ============
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SET @TotalDeleted = 0;
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SET @BatchDeleted = 1;
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PRINT '开始删除 FeedingData 表数据...';
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WHILE @BatchDeleted > 0
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BEGIN
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DELETE TOP (@BatchSize) FROM dbo.FeedingData
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WHERE CreateTime < @CutoffDate;
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SET @BatchDeleted = @@ROWCOUNT;
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SET @TotalDeleted = @TotalDeleted + @BatchDeleted;
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IF @BatchDeleted > 0 AND @DelayMs > 0
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BEGIN
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SET @DelayTime = '00:00:00.' + RIGHT('000' + CAST(@DelayMs AS VARCHAR(3)), 3);
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WAITFOR DELAY @DelayTime;
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END
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END
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PRINT 'FeedingData 表删除完成，共删除 ' + CAST(@TotalDeleted AS VARCHAR) + ' 行。';
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-- ============ 删除 tb_alarm ============
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SET @TotalDeleted = 0;
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SET @BatchDeleted = 1;
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PRINT '开始删除 tb_alarm 表数据...';
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WHILE @BatchDeleted > 0
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BEGIN
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DELETE TOP (@BatchSize) FROM dbo.tb_alarm
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WHERE EndTime < @CutoffDate;
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SET @BatchDeleted = @@ROWCOUNT;
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SET @TotalDeleted = @TotalDeleted + @BatchDeleted;
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IF @BatchDeleted > 0 AND @DelayMs > 0
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BEGIN
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SET @DelayTime = '00:00:00.' + RIGHT('000' + CAST(@DelayMs AS VARCHAR(3)), 3);
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WAITFOR DELAY @DelayTime;
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END
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END
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PRINT 'tb_alarm 表删除完成，共删除 ' + CAST(@TotalDeleted AS VARCHAR) + ' 行。';
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PRINT '所有表数据删除完成，总耗时：' +
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CAST(DATEDIFF(SECOND, @StartTime, GETDATE()) AS VARCHAR) + ' 秒。';
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END TRY
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BEGIN CATCH
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PRINT '数据删除失败：' + ERROR_MESSAGE();
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THROW;
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END CATCH
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END
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GO
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