--用一配製表存需要轉移資料的大表名稱
--每次都查表名與tab_name相匹配且is_used=1的 說明是當前的歷史表
create table config_table(configid int, --id
tab_name varchar(64), --需要轉移資料大表名稱
condition_col varchar(32),--需要移動時間列名稱
history_name varchar(64), --歷史表名稱
is_used int --是否正在使用
)-- 1 test test_history 1
create procedure sp_movehistorydata(@tab_name varchar(32),@move_time varchar(12))
as--sql
declare @sql varchar(4000)
--column_name
declare @col_name varchar(512)
--history column_name
declare @hiscol_name varchar(512)
--history table_name
declare @histab_name varchar(32)
declare @condition_col varchar(32)
declare @count int
begin
select @histab_name = history_name,@condition_col=condition_col from config_table where tab_name=@tab_name and is_used=1
--if there is not history_name then return
if @histab_name is null or @histab_name=''
return
--select source_table column into @col_name
set @sql = n'select @sc_name = left(collist,len(collist)-5)' +
' from ('+
' select object_id,'+
' (select replicate('' '',30-len( [name]))+[name]+'','' from sys.columns where object_id=a.object_id for xml path('''')) as collist'+
' from sys.columns a where object_id=object_id('''+@tab_name+''')'+
' group by object_id'+
' ) b'
exec sp_executesql @sql,n'@sc_name varchar(512) output',@sc_name=@col_name output
select @count=count(1) from sys.objects where object_id=object_id(@histab_name)
-- if there is not exists history_table then crate and insert data to history_table
-- delete from tab_name when match the condition
if @count is null or @count ='' or @count =0
begin
set @sql = 'select '+@col_name +' into '+@tab_name+'_his1'+' from '+@tab_name+' where '+@condition_col+' <= convert(datetime,'+@move_time+' 23:59:59 )'
exec (@sql)
set @sql = 'delete from '+@tab_name +' where '+@condition_col+' <= convert(datetime,'+@move_time+' 23:59:59 )'
exec (@sql)
endelse
begin
--select source_table column into @hiscol_name
set @sql = n'select @hc_name = left(collist,len(collist)-5)' +
' from ('+
' select object_id,'+
' (select replicate('' '',30-len( [name]))+[name]+'','' from sys.columns where object_id=a.object_id for xml path('''')) as collist'+
' from sys.columns a where object_id=object_id('''+@histab_name+''')'+
' group by object_id'+
' ) b'
exec sp_executesql @sql,n'@sc_name varchar(512) output',@hc_name=@hiscol_name output
if @col_name = @hiscol_name
begin
set @sql = 'insert into '+@histab_name+' select '+@col_name +' from '+@tab_name+' where '+@condition_col+' <= convert(datetime,'+@move_time+' 23:59:59 )'
exec (@sql)
set @sql = 'delete from '+@tab_name +' where '+@condition_col+' <= convert(datetime,'+@move_time+' 23:59:59 )'
exec (@sql)
endelse
begin
-- get historytable_name 's last char set add one then rename histab_name
set @count = cast(right(@histab_name,1) as int)
set @count = @count+1
set @histab_name = substring(@histab_name,1,len(@histab_name)-1)+cast(@count as varchar(1))
set @sql = 'select '+@col_name +' into '+@tab_name+'_his1'+' from '+@tab_name+' where '+@condition_col+' <= convert(datetime,'+@move_time+' 23:59:59 )'
exec (@sql)
set @sql = 'delete from '+@tab_name +' where '+@condition_col+' <= convert(datetime,'+@move_time+' 23:59:59 )'
exec (@sql)
select @count = count(1) from config_table
set @count = @count+1
update config_table set is_used = 0 where tab_name=@tab_name
insert into config_table(configid,tab_name,condition_col, history_name,is_used )
values(@count,@tab_name,@condition_col,@histab_name,1)
endend
end
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