how to update millions of records in sql server

1. Improved version of "Russian stored procedure" CREATE procedure pagination1(@ Pagesize int, -- page size, such as storing 20 records per page@ Pageindex int -- current page number)As set nocount on Begin Declare @ indextable table (id int identity (), nid int) -- Define table VariablesDeclare @ PageLowerBound int -- defines the bottom code of this page.Declare @ PageUpperBound int -- defines the top code of this page. Set @ PageLowerBound = (@ page

How SQL Deletes a member's published N Records from millions records-sql retrieval efficiency issues Delete from table200 where mid=xxxxxxx timeout If you use the SELECT * from table200 where mid=xxxxxxx is also timed out But if you use the Select top table200 where mid=x

I think a lot of people know that in Oracle, stored procedures can be passed in an array (such as int[]), that is, you can pass multiple records to the data to update together. Reduce the number of requests to the database. But what about SQL Server? Bulk INSERT This is a lot of people know, I also know, but unfortunat

BBS library. When I was asked about SQL Server's processing capabilities again during the interview, I was very confident that SQL server could withstand millions of processing capabilities, I have also proved that it can. At this time, the interviewer is always very agile in thinking, and the problem is coming soon.

SQL efficient paging (Millions of data records) and SQL Paging Reference: SQL paging statements Method 1: the most efficient Select top page size * FROM (SELECT ROW_NUMBER () OVER (order by id) AS RowNumber, * FROM table1) as a where RowNumber> page size * (page number-1)

Use PLSQL to delete a large table with millions of records. This script uses the dbms_output.sleep () process to determine the maximum number of log files to be archived. You can use PL/SQL to delete a large table with millions of records. This script uses dbms_output.sleep

Now we use mysql to directly use limit for database paging. There is no error in this case. If tens of thousands of data entries are not a problem, if you have tens of millions of records, you will want to die. Let me analyze them for you. Now we use mysql to directly use limit for database paging. There is no error in this case. If tens of thousands of data entries are not a problem, if you have tens of

Label:To delete a large table of millions records using PL/sql: Recently, developers have been stress-tested in the test environment database, resulting in a large amount of dirty data in the database. There are several records of large tables of data in millions or even tho

Optimization tips for SQL statements with millions of records in ORACLE 1. To optimize queries, try to avoid full table scanning. First, you should consider creating an index on the columns involved in where and order. Www.2cto.com 2. try to avoid null value determination on the field in the where clause. Otherwise, the engine will discard the index and perform f

1. Improved version of "Russian stored procedure" CREATE procedure pagination1(@ Pagesize int, -- page size, such as storing 20 records per page@ Pageindex int -- current page number)As set nocount on Begin Declare @ indextable table (id int identity (), nid int) -- Define table VariablesDeclare @ PageLowerBound int -- defines the bottom code of this page.Declare @ PageUpperBound int -- defines the top code of this page. Set @ PageLowerBound = (@ pag

time. Let's take a look at this effect. SQL Server 2000 elapsed time: 21099 SQL Server 2008 elapsed time: 10997 Method 4: Use the sqlbulkcopy class This method is fast, but it depends on the memory. For complex data with tens of millions of

committing SQL statements in batchesIf you need to perform a large DELETE or INSERT query on an online website, you need to be very careful to avoid your actions to keep your entire site from stopping accordingly. Because these two operations will lock the table, the table is locked, the other operations are not in.Apache will have a lot of child processes or threads. So, it works quite efficiently, and our servers don't want to have too many child p

SQL Server database's experience in operating hundreds of millions of tables is summarized. sorting hundreds of millions of tables or joining hundreds of millions of tables may cause the system to lose response. ◆ 1. I did make a large query. the involved data table conta

ZWOMILBSM0 l on L.tlntcode=t1.tlntcode join ZWOMEXPRM0 CP on T1.TLNTCODE=CP.T Lntcode where IsNull (T2.DELETEFG, ' 0 ') = ' 0 ' and I.mlbscode in (select value from #i) and i.locatype= '--and i.mlbs Type= ' and P.mlbscode in (select value from #p) and p.locatype= '--and p.mlbstype= ' + l.mlbscode in (select V Alue from #l) and l.locatype= ""--and l.mlbstype= ' and cp.companyn like '% ' [emailprotected]+ '% ' and CP. Sequence=0 ' EXEC sp_executesql @Sql