SQL Server PARTITION FUNCTION(分区)
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分区并不影响Linq,sql查询
在MSSQL中,选中目标表,右键-存储-创建分区
根据提示完成分区,存储成sql
这里展示如何根据Id的数据范围分区
在执行前,可能需要设置日志文件大小为“无限制”,否则执行过程中可能出现事务日志已满,原因为“LOG_BACKUP”
的报错
--其实就是写个生成字符串列表(数据范围)的函数
DECLARE @fenqu nvarchar(max) =
N'CREATE PARTITION FUNCTION [fenqu](bigint) AS RANGE RIGHT FOR VALUES (';
DECLARE @i int = 0;
WHILE @i < 50000000
BEGIN
SET @fenqu += '''' + CAST(@i as nvarchar(10)) + '''' + N', ';
SET @i = @i+500000;
END
SET @fenqu += '''' + CAST(@i as nvarchar(10))+ '''' + N'); ';
EXEC sp_executesql @fenqu;
--数量和上面分区的数量对应
CREATE PARTITION SCHEME [fenqufangan] AS PARTITION [fenqu] TO (
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY],
[PRIMARY],[PRIMARY])
分区完成后,日志文件、数据文件可能会很大,可以收缩一下
资料
CREATE PARTITION FUNCTION (Transact-SQL)
官方资料展示了根据数量、根据时间段分区的示例
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