oracle case statement

Switch syntax The code is as follows Copy Code switch (expression){case constant Expression 1: statement 1;....Case constant Expression 2: statement 2;Default: statement;} Default is to execute it if it is not matched, and default is no

The CASE expression is added to SQL in Oracle8i, and Oracle9i extends it so that the CASE expression and CASE statement can be used in PLSQL. The value matches the CASE expression. The CASE expression is added to SQL in Oracle8i,

In summary, the use of switch is to determine if the expression after the case matches the expression after switch, and once the case is matched, the subsequent program code is executed, regardless of whether the following case matches until the break was met . Do not match to find default. No matter where default is placed. As soon as a junction (

Tags: Linux shell1.case structural Conditional statement syntaxThe case statement is actually the canonical multi-branch if statementCase "string variable" inValue 1) Instruction 1 ...;;Value 2) Instruction 2 ...;;*) Instruction 3 ...EsacChinese programming Syntax:Case "Find a girlfriend condition" inHave a room) to ma

look at this. When this value is set to 0 o'clock, a table with a self-increasing field inserts the behavior of a row of data: 1) Apply for Auto_inc lock 2) Get the current AUTO_INCREMNT value N, give auto_increment plus 1 3) Perform the insert operation and fill n into the new row corresponding field 4) Release Auto_inc lock We see this process, although innodb in order to reduce the size of the lock, the execution of the statement is released

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 condition selection statement and loop statement Oracle Condition Selection statements (IF, CASE), LOOP statements (LOOP, WHILE, and FOR), and sequential control statements (GOTO, NULL ).1. IF condition selection statement1.1 simple condition judgment DECLAREV_sal NUM

If statements process two branches, the IF-else-If structure must be used when processing multiple branches. However, if there are many branches, the more nested if statement layers,ProgramIt is not only huge but also difficult to understand. Therefore, the C language provides a conditional selection statement specifically used to process multi-branch structures, calledSwitch

Select Case statement Execute several sets of statements based on the expression value. Select Case testexpression[Case expressionlist-n[statements-n]] . . .[Case Else expressionlist-n[elsestatements-n]]End SelectParameters Testexpression Any number or string expression. Exp

label: des Io ar uses on art log EF as For such a combined logic circuit [email protected] (x) Case (x) x1: X2 :...... Endcase if the branch item contains all the values of variable X and does not overlap with each other, there is no need to use a comprehensive command in this case. (1) Some books in "// synthesis parallel_case" are used to introduce case statem

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 database has SQL server-like

. Otherwise, execute action. Instance (testuntil. Sh ): #! /Bin/sh A = 10; Until [[$ A-lt 0]; do Echo $; (-)); Done; Result: Sh testuntil. Sh 109876543210 Iii. Shell selection statement (case and select usage) Use Case/esac) Syntax structure Case $ ARG inPattern | sample) # ARG in pattern or sample;;Pa

If testexpression matches any of the case expressionlist expressions , execute the statement between this case clause and the next one, for the last clause, the statement is executed between the clause and the end Select, and the control The statement that is transferred

; Check whether the problem is resolved. 1.4Reference informationSuppose you want to track a session. Only need to open the session level, after tracking please close.· turn on session level tracking:Sql> alter session Set sql_trace = Ture;· To turn off session level tracking:Sql> alter session Set Sql_trace = FALSE; Copyright notice: This article Bo Master original article. Blog, not reproduced without consent. Oracle Database

Next we will talk about the mysql stored procedure case statement syntax and instance tutorial. on the home page, let's take a look at the simple description of the case statement, and then explain the specific usage of the case with examples. Next we will talk aboutMysql tu

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 when sex = '1' then 'male'When sex = '2' then

(" has a great website ") Case " Tim Cook ": println (" CEO of Apple Inc. ") Default: println ("Someone Else") } In addition to being able to use a switch for strings, note here are some interesting things to do. Did not see the break. Because the execution of a case statement in the switch is not done down. No more chance to appear bug! And for insta

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