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  • day 22 全量更新

    --全量更新
    create table pdata.dbo.customer(
    name varchar(255)
    ,type varchar(255)
    ,type_no varchar(255)
    ,address varchar(255)
    ,tel varchar(255) )

    insert into pdata.dbo.customer values( 'ccc ', 'sfz',' 1201334',' a1 ',' 1')
    insert into pdata.dbo.customer values( 'AAA ', 'sfz',' 1301121',' a2 ',' 128285 ')
    insert into pdata.dbo.customer values( 'ddd ', 'sfz',' 1201335',' a3 ',' 1268910 ')
    insert into pdata.dbo.customer values( 'cef ', 'sfz',' 1201005',' a9 ',' 1268910 ')
    insert into pdata.dbo.customer values( 'verg', 'sfz',' 1201255',' a12 ',' 1268910 ')
    insert into pdata.dbo.customer values( 'erf ', 'sfz',' 1201285',' a89 ',' 1268910')

    create table sdata.dbo.customer_20180312 (
    name varchar(255)
    ,type varchar(255)
    ,type_no varchar(255)
    ,address varchar(255)
    ,tel varchar(255) )



    insert into sdata.dbo.customer_20180312 values( 'cwcwie ', 'sfz',' 1201334',' a75 ',' 122828 ')
    insert into sdata.dbo.customer_20180312 values( 'AAA ', 'sfz',' 1301121',' a5cio21 ',' 0 ')
    insert into sdata.dbo.customer_20180312 values( 'ddd ', 'sfz',' 1201335',' a98 ',' 1268910 ')
    insert into sdata.dbo.customer_20180312 values( 'cef ', 'sfz',' 1201005',' a0 ',' 12689102 ')
    insert into sdata.dbo.customer_20180312 values( 'verg', 'sfz',' 1201255',' a12 ',' 1268910 ')
    insert into sdata.dbo.customer_20180312 values( 'erf ', 'sfz',' 1201285',' a89 ',' 0')

    select * from sdata.dbo.customer_20180312

    删除有误的数据或者已经存在的数据

    delete from pdata.dbo.customer
    where exists(
    select 1 from sdata.dbo.customer_20180312 b
    where pdata.dbo.customer.name =b.name
    and pdata.dbo.customer.type = b.type
    and pdata.dbo.customer.type_no=b.type_no
    and(
    pdata.dbo.customer.address <>b.address
    or pdata.dbo.customer.tel <>b.tel
    )
    )


    select * from pdata.dbo.customer

    插入新的数据

    insert into pdata.dbo.customer
    (name
    ,type
    ,type_no
    ,address
    ,tel
    )
    select
    a.name
    ,a.type
    ,a.type_no
    ,a.address
    ,a.tel
    from sdata.dbo.customer_20180312 a
    left join pdata.dbo.customer b
    on a.name =b.name
    and a.type = b.type
    and a.type_no=b.type_no
    where b.type is null


    select* from pdata.dbo.customer

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  • 原文地址:https://www.cnblogs.com/simly/p/9570844.html
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