decode statement in sql

1. View SQL statement IO consumptionSET STATISTICS IO onSELECT * from Dbo.jx_order where order_time> ' 2011-04-12 12:49:57.580 'SET STATISTICS IO off2. View the SQL statement time consumptionSET STATISTICS time onSELECT * from Dbo.jx_order where order_time> ' 2011-04-12 12:49:57.580 'Set STATISTICS time off3. View

This article goes on to the previous article: query to SQL and add to and update to SQL. Taking northwind as an example, we will introduce how to delete data using LINQ to SQL. First, take a row of data in the MERs table as an example to delete the data: NorthwindDataContext ctx = new NorthwindDataContext(); Customer test1 = ctx.Customers.Single(c => c.CustomerI

I don't know whether stored procedures can be implemented, but SQL Server 2000 Job Scheduling does have this function. How can I make some SQL statements run regularly and perform the following operations in sequence: Enterprise Manager-- Manage -- SQL Server proxy -- Right-click a job -- Create a job -- Enter the job name in "general" -- "Step" -- New

1 Declare @name varchar( +)2 Declare @sql varchar( +)3 4 if object_id('tempdb: #space') is not NULL Drop Table#Space5 Create Table#Space(Namevarchar( -), Rowsbigint, reservedvarchar( A), datavarchar( A), index_sizevarchar( A), unusedvarchar( A))6 7 DeclareSpcursorLocal for Select '['+Name+']' fromsysobjectswhereType= 'u'8 OpenSP9 FetchSp into @nameTen while @ @fetch_status = 0 One begin A Set @sql = 'INS

Because of the ORM tool, we debug the program is far from directly in the program to write a string of SQL simple, want to check a SQL is how happy, a line of sql = "SELECT * From ..." Look for it, now with Hibernate, Even if the show_sql=true is opened in JPA, it is a string called "name =?" and id =? "Fortunately find a tool, P6spy, as a real JDBC agent, interc

, 2009 Monday pm) According to ' date of month, day of the week, morning afternoon 'Select Datename (Yy,getdate ()) + ' year ' +Datename (Mm,getdate ()) + ' month ' +Datename (Dd,getdate ()) + ' Day ' +Datename (Weekday,getdate ()) +Case when Datename (Hh,getdate ()) --2. Write the function, depending on the input time. The day of the year is outputSelect DATEPART (dy,getdate ())--3. Finding random output characters ' A-ZSelect char (97+abs (checksum (NEWID))%26)Select char (97+rand () *26)

Id = % d of the SQL query statement in PHP (recommended), SQL % d Some SQL statements are written as follows: 'Select id FROM dbname WHERE xx_id = % d; ', $ bl ['student _ id'] "Xx_id = % d", here % d Refers to a decimal number (d means decimal ), the content of the decimal number is the following $ bl ['student _ i

Method 1:Applies to SQL Server 2000/2005SELECT TOP Page Size *From table1WHERE ID not in ( SELECT TOP Page Size * (pages-1) ID from table1 ORDER by ID )ORDER by IDMethod 2:Applies to SQL Server 2000/2005SELECT TOP Page Size *From table1WHERE ID > ( ( SELECT TOP Page Size * (pages-1) ID from table1 ORDER by ID

SQL statement learning, SQL statements Exercise for one table 1. Create a table create table student(name Char(20),curriculum Char(20),score Char(20)); Insert data: Insert into student (name, curriculum, score) VALUES ('wang wu', 'mat', '123 '); Mysql> select * from student; + -------- + ------------ + ------- + | Name | curriculum | score | + -------- + ---

SQL statement records, SQL statements Query all surgical appointments and the corresponding schedule. If the pk is not null, separate them with commas ). The SQL statement in mysql is as follows: Select distinct. pk,. surgeryName,. clerkName,. customerName,. orderTime, B

One-to-Multiple SQL statement syntax for fields between SQL SERVER tables and tables, serversql Table A1 A2 A3 A4 01 02 03 04 03 04 01 02 Table B B1 B2 01 Zhang San 02 Li Si 03 Wang Wu 04 Zhao Liu

Tags: isnull font name ROM null arch weight 2.x arcTable information field information in SQL Server These things are also placed in the system tables, and the following SQL statement is used to query the field information for a table. SelectT1.name Table_name,t2.namecol_name, T3.name+'('+Convert(varchar( $), T2.length)+')'Datatype,t2.isnullable fromsysobjects T1

Tags: ... span answer according to creat other where table BSPToday, on the Internet, according to the old table to create a new table SQL statement, the Web gave two answersCREATE table tab_new like Tab_old (creating a new table with the old table )CREATE TABLE tab_new as Select Col1,col2 ... From tab_old definition onlyTwo statements have been tried, error.The correct method is select * into newtable from

There is a table with the following dataPlease write the SQL statement with the result as follows.Create a table in MySQLCREATE TABLE ' AA ' (' id ' int (ten) not NULL auto_increment COMMENT ' book Number ',' Year ' varchar (4) is not NULL DEFAULT ' COMMENT ',' Month ' varchar (2) Not NULL DEFAULT ' 0 ' COMMENT ' month ',' Mount ' double DEFAULT NULL COMMENT ' quantity ',PRIMARY KEY (' id ')) Engine=innodb

Tags: time difference binary not for simple JPG rop condition Sele sizeFor statements to run, there are other factors to consider, in addition to the execution plan itself, such as the compile time of the statement, the execution time, the number of disk reads, and so on. If the DBA is able to run the problem statement separately, you can open the following three switches before running to collect statistic

Some commonly used SQL statement syntaxes compiled by the Helper's house editor. For more information, see I. Data Control Statement (DML) 1. INSERT (INSERT the record statement into the data table) Insert into Table Name (field name 1, field name 2 ,......) VALUES (value 1, value 2 ,......); Insert into Table Name (fi

SQL query a specified date and time record SQL statement and query an instance Create a table with the following abc structure:Create table 'cc'. 'loup '('Id' INT (4) not null AUTO_INCREMENT,'Datetimes 'INT (4) NULL,'Ipaddress' VARCHAR (20) NULL,Primary key ('id ')) ENGINE = MYISAMInsert data in batchesInsert into 'loup' ('id', 'datetimes ', 'ipaddress') VALUES(1

SQL query specify date time record SQL statement and query instance First create a table ABC structure is as followsCREATE TABLE ' cc '. ' Loup ' (' ID ' INT (4) Not NULL auto_increment,' DateTimes ' INT (4) NULL,' IPAddress ' VARCHAR NULL,PRIMARY KEY (' id ')) ENGINE = MYISAMThen BULK INSERT dataINSERT into ' loup ' (' id ', ' datetimes ', ' IPAddress ') VALUES

Original: SQL SERVER execution Order of an SQL statementOrder of execution of an SQL statement1, from (Tell the program from which table if the table expression is still the same order)2. Where (conditional filter predicate filter)3. Group BY (Group)4. Having (grouping predicate filtering)5. Select (expression)6, Expression (Window function aggregation function,

sql| News | web | statement 1,select Statement In the SQL world, the most fundamental operation is the SELECT statement. Many people will be familiar with the following when using SQL directly under Database Tools: SELECT whatFrom