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1. Control Structure of PL/SQL, including selection structure, loop structure and jump Structure Rlwrap SQLPLUS spool to dynamic Log File Name Oracle SQLPLUS prompt settings Accelerate SQL return by setting SQLPLUS ARRAYSIZE (row prefetch) 1. Select

If and case two conditional statements in the shell 1. If Syntax 1:IfConditionsThenCommandsElseCommandsFi Syntax 2 for if:Syntax: If conditionThenCommandsElif conditionsThenCommandsElif conditionsThenCommands....ElseCommandsFi Description: Read

Use [], &, | to determine 1. If judgment statement: If [$ A = ""]; then "Contents" Elif [$ B = ""]; then "Contents" Else "Contents" Fi Linux if command 1 string judge str1 = str2 when two strings have the same content, length is true str1!

IFNULL (expr1, expr2)If expr1 is not NULL, IFNULL () returns expr1; otherwise, it returns expr2. IFNULL () returns a number or string value, depending on the context in which it is used. SELECT IFNULL(1,0); // 1 SELECT IFNULL(0,10); // 0

Where Condition Query The code is as follows SELECT * FROM news where DATE (adddate) between ' 2011-04-20 '-INTERVAL 5 day and ' 2011-04-20 ' + INTERVAL 5 day SELECT * FROM news where DATE (adddate) in (' 2011-04-20 ', ' 2011-04-15 ', ' 2011-04-2

Suppose a data table has a status field designed to be a varchar type with the following values: Null,pending,pending refund,refund,cancel. We know the order that the query status is cancel, which can be written by the SQL statement: SELECT

Where Condition Query The code is as follows Copy Code SELECT * FROM news where DATE (adddate) between' 2011-04-20 '-INTERVAL 5 day and ' 2011-04-20 ' + INTERVAL 5 daySELECT * FROM news where DATE (adddate) in (' 2011-04-

As we all know, there is no switch in Python, which is generally replaced by if-else, for example, the C Language Switch (key) {Case 'A':/* do_a */break; Case 'B':/* do_ B */break; Case 'C ': /* do_c */break ;} In python If key = 'A': #

Solve | problem | Source code global variable definition Type hrdstate ' Huarong Road Chess representation Current position of 12 pieces on the state (1 to) as Long ' chessboard Superid as Long ' the position number of the chessboard, 0

Run it directly select: 1. I want to answer 2. Song search; 3, news search; 4. Web search; 5. Paste search; 6. Know search; 7. Picture search; 8. Video search; 9; encyclopedia search; Then enter the content you want to search directly automatically

Drop-down box in Form " size = "1" id = "rstype "> auto number 0 then response. Write ("selected") %> text text nchar nvarchar string remarks bit smallint2 bytes tinyint int4 bytes synchronous replication id uniqueidentifier long

Run it and select: 1. I want to answer; 2. song search; 3. news search; 4. webpage Search; 5. post Bar search; 6. know the search; 7. image search; 8. video Search; 9; encyclopedia search; Then, enter the content to be searched and go to the

Test instructions: Give you a long W, wide h of paper, ask if you can be a given size, every origami can only be folded into an integer size.Problem-solving Ideas: Recursive + enumeration enumeration of the length and width of a given size, and then

Jqgrid is a good jquery based DataGrid framework, presumably everyone is not unfamiliar, online based on ASP data is very little, I provide a data format is JSON: , a JSON class for Jqgrid: This code seems to be translated from some PHP in the

This articleArticleAfter I read the original article, I think it is a misunderstanding. When I watch it, there is something in it, but it is of little value and cannot be taken seriously! The key to understanding this article is to confirm the

Good Graph Theory [Cpp]// BEGIN CUT HERE // END CUT HERE# Line 5 "MonsterFarm. cpp"# Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include #

Background: The following describes how to use bugfree as recommended by the bugfree designer: first, create a test case, run test case to generate a test result, and run a failed case, you can directly create bugs. The title, steps, and testresult

I. Structured programming Structured programming is centered on modular design , and the software system to be developed is divided into several independent modules. For the description to determine whether to touch a number is a positive, negative

And python itself does not have a switch statement, the solution has the following 3 kinds:A. Using dictionaryValues = { VALUE1:DO_SOME_STUFF1, VALUE2:DO_SOME_STUFF2, ... VALUEN:DO_SOME_STUFFN, }Values.

Test instructions: Ask you between A-B to ask you to choose two numbers to make these two numbers the same number with the same number.Solution Idea: Enumerate all the numbers between a-B, divide the number into 10 binary hash state compression, and