teradata sql case statement

SQL statement-case when then else end, SQL-case Output the following results based on the preceding table information: The following are the database and table structure data: create table DeptSales(deptID int,SubjMonth int ,sales int ,deptname varchar(50)) insert into

Recently learned SQL in Teradata environment. Here to record the study of the knowledge points, as a record.Directory: About SQL learning and the online database used Table Union (join) SQL Sub-query Create a new field at select (as, Case time) Data

PL/SQL daily question: the difference between a CASE statement and a CASE expression: there are many different types of guinea pigs in the world, some of which have identifiable characteristics. For example, the "Abyssinians" skin has a pleated garlands www.2cto.com "Texels" with long curly hair. In contrast, the White

Times, lob pre-read 0 Times.Table ' Ufi8s6u81179717475734 ' . Scan count 1 , Logical read 37 Physical reads 0 Times, pre-read 0 Times, lob logic reads 0 Physical lob reads 0 Times, lob pre-read 0 Times.Table ' Ufi2j0n11179717502375 ' . Scan count 1 , Logical read 46 Physical reads 0 Times, pre-read 0 Times, lob logic reads 0 Physical lob reads 0 Times, lob pre-read 0 Times. Table found hereUft3a6h61176948132312 has near

c.t_id=d.t_id left joins student A on a.s_id=b.s_id where D.tname= ' Zhang San '; /*dense_rank () */select E.s_id,e.c_id,e.score from (select s_id, c_id, Score,dense_rank () over (partition by c_id ORDER BY s_id) Rank1 from SC) e left joins course C on e.c_id=c.c_id left joins teacher D on c.t_id=d.t_id where D.tname= ' Zhang San ' and e.rank1=1; Select Top 1* from (select s_id, c_id, Score,dense_rank () up (partition by c_id ORDER by s_id) Rank1 from SC E left J Oin course C on e.c_id=c

An SQL statement is used in the project, such: Select sum (price * xiaoliang)/sum (xiaoliang) price from ...... When sum (xiaoliang) = 0, the error of division by 0 will occur. What should I do? At first, I wantProgramProcessing, that is, moving the computing process to the program is obviously troublesome. Later, I found the method of using the case

cannot give the literal value null to EXPRESSION1,2. Coalesce[,k??? ' Les] FunctionsThe COALESCE function compares each expression in the expression list to null and returns the value of the first non-null expression. The COALESCE function has the following structureCOALESCE (Expression1,expression2,........., expressionn)If expression1 equals null, EXPRESSIOIN2 is computed. If the expression2 evaluates to NULL, the function returns EXPRESSION2 and returns null if the result of all expressions

Case has two formats. Simple case functions and case search functions. -- Simple case Function Case Sex When '1' Then Male' When '2' Then Female' Else 'Others' End -- Case search function

Oracle experiences 1 -- oracle introduction @ basic SQL statement @ conditional query @ sort data theory and case studies1. Oracle IntroductionOracle is the first word for English translation of oracle (Oracle bone inscriptions) Unearthed from Yin. Oracle is the world's largest supplier of information management software and services. It was founded in 1977 and i

SQL server's case when then statement, sqlcase -- Select DataName,-- Case Code---- When 'w01' then 'male'---- When 'w07 'then' female'---- Else 'others'---- End as Code-- From dbo. HistoryData Select DataName,(CaseWhen Code = 'w01' then 'male'When Code = 'w07 'then' female'Else 'others'End)From HistoryData The access d

One of the SQL statement judgment methodsCase has two formats. Simple case functions and case search functions.-- Simple case FunctionCase sexWhen '1' then 'male'When '2' then 'female'Else 'others' end-- Case search functionCase w

Case has two formats. Simple case functions and case search functions.1. Simple case Functions Case sex when '1' then' male 'when' 2' then' female 'else' others' end 2. Case search functions

This afternoon colleagues asked me a more basic question, when splicing SQL statements, if encountered like the situation what to do.My original writing is a simple concatenation of strings, and later colleagues asked me what to do if I encountered SQL injection. I think about it, it's really a problem.Just on the Internet to find the relevant instructions, the original is so written.As such an

Analysis of two methods of SQL statement row/column conversion case... the application of the when function and the limit function bitsCN.com /* Create a database */Create database tmpGoUSE tmpGo /* Create a database Test table */Create table [Scores]([ID] int identity (1, 1)Primary key,[Student] VARCHAR (20 ),[Subject] VARCHAR (30 ),[Score] FLOAT) Go Truncate ta

Label:Youdao Written Questions: Server Monitoring table Server_status, when the server state occurs server_status changes in the data table will be inserted a record, state 0 indicates that the shutdown 1 is normal, SQL query Server A's downtime start time and end time, There is a status record for more than one server in the table. svr_id Svr_name Status_time STATUS 1 A 2013-10-31 00:00:00

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.Text.RegularExpressions;namespacetestpro{ Public Partial classCaseWhenSqlGeneration:System.Web.UI.Page {protected voidPage_Load (Objectsender, EventArgs e) { } protected voidBtnok_click (Objectsender, EventArgs e) { stringEnumstring = This. TxtEnum.Text.Trim (). Replace ("\ r \ n",""); BOOLUsemark = This. chkusemark.enabled; stringres

SQL statement case when then else end returns a qualified value, sqlcase Case has two formats Simple Case functions and Case search functions: -- Simple Case function

Keyword: case Case has two formats. Simple Case functions and Case search functions. -- Simple Case Function CASE sex WHEN '1' THEN 'male' WHEN '2' THEN 'female' ELSE 'others' END -- Case