sql query with nolock

SQL Server paging query processing method summary, SQL Server Paging Sqlserver2008 does not support the keyword limit, so its paging SQL query statement cannot be performed using MySQL. Fortunately, sqlserver2008 provides top, rownumber, and other keywords, in this way, you

Tags: reading Notes database sql Part iii:thinking in SetsCHAPTER7 Thinking in Sets The three Mostcommon set operations is as follows. Intersection Difference Union in the SQL The corresponding keywords in each of the Intersection Except Union The actual database implementation generally supports the following

Query, delete, insert, query, and sort SQL statementsHere we provide the maximum and minimum SQL statements for queries, deletions, inserts, queries, total sorting sum and average.Select: select * from table1 where rangeInsert: insert into table1 (field1, field2) values (value1, value2)Delete: delete from table1 where

,-1, GETDATE ()),111)//111 is the style number, (100-114)Query first day of the month Date: Select DATEADD (mm, DATEDIFF (mm,0, GETDATE ()),0) asfirstday Query Last day of the month Date: Select DateAdd (MS,-3, DATEADD (mm, DATEDIFF (M,0, GETDATE ()) +1,0)) asLastday//change-The value of 3 changes accordinglyHow many days are there this month:SelectDatePart (Dd,dateadd (dd,-1, DateAdd (MM,1, Cast ((CAST (GE

In the previous description of SQL Server parameterized query's where in and like implementation, we introduced several implementation schemes for SQL Server to use parameterized query where in, with XML and Table value parameters missing, here is a supplement ArticleGuide Solution 5 use XML Parameters Solution 6 use the table value parameter TVP and datata

(@PageSize) A.id,a.name from(SELECTRow_number () Over(Order byId asRowNumber* fromPerson with(NOLOCK)) AWHEREA.rownumber>((@PageIndex-1)*@PageSize)three. Small Tips1. At first, when writing a blog, actually thought of another method, can not be proposed, we have to look at this SQL.　　　　SELECT TOP (@PageSize*fromWHERE>(SELECTTOP(@ PageIndex-1)*@PageSizeMAX from person)2. The following are the results of th

All right, go to the database log to search for it and use the time and keyword for batch configuration .. You can use all that you can think.First, assume that you have executed it. No? Okay, either it's too simple, or you're too simple ..Copy codeThe Code is as follows:Select top 1000-- Creation TimeQS. creation_time,-- Query statementSUBSTRING (ST. text, (QS. statement_start_offset/2) + 1,(Case qs. statement_end_offset WHEN-1 then datalength (st. t

Fuzzy query and SQL fuzzy query Public function Index () {// fuzzy query by account, real name, and mobile phone number $ user = M ('cuser'); $ where = "(IFNULL (projectno ,'". session ("user") ['projectno']. "') = '". session ("user") ['projectno']. "'OR projectno ='') "; if (! Empty (I ('Param. name ') {$ name = trim

Users use email as a user name landing, you need to check out an email corresponding to a record. Each user's email is unique.SELECT * from T_user WHERE email=?;The above statement implements a query email corresponding to a user information, but because the email column is not indexed , will result in a full table scan , the efficiency will be very low.SELECT * from T_user WHERE email=? LIMIT 1;Plus limit 1, as long as a corresponding record is found

Label:Write in front: This is the first T-SQL query Advanced series article. But the T-SQL query step-up series is far from finished. This topic is advanced and I think it is because this topic requires some advanced knowledge as the basis. If there is any mistake in the article, please do not hesitate to correct me. T

SQL query skills two ways to query whether a table exists Method 1: Determine whether a system object existsDeclare @ Dbtablefilename varchar (100) Set @ dbtablefilename = 'tx' If objectproperty (object_id (@ dbtablefilename), 'isusertable') is not null Print 'exists' Else Print 'not exists' If object_id (@ dbtablefilename) is not null Print 'exists' Else Prin

@ PACK_RECEIVED;Select @ CPU_BUSY;Select @ PACK_SENT;Select @ TIMETICKS;Select @ IDLE;Select @ TOTAL_ERRORS;Select @ IO_BUSY;Select @ TOTAL_READ; -- number of disk readsSelect @ PACKET_ERRORS; -- number of network packet errorsSelect @ TOTAL_WRITE; -- number of disk writes executed by sqlserverSelect patIndex ('% soft %', 'Microsoft SqlServer ');Select patIndex ('soft % ', 'Software SqlServer ');Select patIndex ('% soft', 'sqlserver microsoft ');Select patIndex ('% so_gr %', 'jsonisprogram ');1

The instance resolution and SQL horizontal display are displayed in the row-to-column manner of SQL query statements. This article shares two examples of horizontal display of rows and columns in SQL query statements for your reference. The specific content is as follows: Ex

Introduction In SQL Server, each query finds the shortest path to achieve its goal. If the database only accepts one connection, only one query is executed at a time. Therefore, queries must be completed quickly and easily. However, most databases need to process multiple queries at the same time. These queries will not wait in line like a gentleman, but will be

OK, go to the database log to look for, through the time, keyword batch match. All you can think of is to use it. Let's assume that you've executed it. No? Well, either it's too simple, or you're too easy. Copy Code code as follows: SELECT Top 1000 --Creation time Qs.creation_time, --Query statement SUBSTRING (St.text, (QS.STATEMENT_START_OFFSET/2) +1, (Case Qs.statement_end_offset WHEN-1 THEN datalength (st.text) ELSE qs.

Label: Public classTestsql {@Test Public voidtest01 () {Session session=NULL; Try{Session=hibernateutil.opensession (); List). addentity (Student.class). Setparameter (0, "% hole%"). Setfirstresult (0). Setmaxresults (10). List (); for(Student stu:stus) {System.out.println (Stu.getname ()); } } Catch(Exception e) {e.printstacktrace (); } finally{Hibernateutil.close (session); }} @Test Public voidtest02 () {Session session=NULL; Try{Session=hibernateutil.opensession (); List). Addentity

1. Use SET STATISTICS TIME ON -- First clear the cache Dbcc dropcleanbuffers; Dbcc freeproccache; -- Run Set statistics time on; SELECT orderid, custid, empid, shipperid, orderdate, filler FROM dbo. Orders WHERE orderdate> = '123' AND orderdate Set statistics time off; GO You will get a similar message: SQL Server Analysis and Compilation Time: CPU time = 15 ms, occupied time = 33 Ms. SQL Server executi

Before: This is the first T-SQL query advanced seriesArticleBut the advanced series of T-SQL query is far from finished. I think this topic needs some advanced knowledge as the foundation. If there are errors in this article, please do not correct it. The content of this article requires the indexing knowledge as the b

Label:ioarjavaforsp Data onbsad Publiclist To get the metadata for the SQL query result set column based on the SQL query

Solution 5 use xml Parameters If you are not familiar with SQL server xml type parameters, you must first understand the XQuery concept. Here, an XQuery is a language used to search for and extract elements and attributes from XML documents, simply put, the language used to query xml leads to XPath. In fact, XPath is a subset of XQuery. XQuery 1.0 and XPath 2.0 share the same data model, the same functions