iif sql

Basics of T-sql: Beyond basic Level 6: Using case expressions and IIF functionsGregory larsen,2016/04/20 (First edition: 2014/04/09)The seriesThis article is part of "Stairway series: The cornerstone of T-sql: Beyond the Basics"From his stairway to T-SQL DML, Gregory Larsen covers more advanced aspects of the T-

an empty unit, the following example returns 0; otherwise, 1 is returned:IIF (isempty (Measures. currentmember), 0, 1) StringIf measures. currentmember is an empty unit, the following string returns the string "yes"; otherwise, the string "no" is returned ":IIF (isempty (Measures. currentmember), "yes", "no ") In access, I can use the IIF function for statistical summary. For example, to know the actual nu

IifReturns one of the two numeric or string values determined by the logical test.GrammarDigitalIIf («logical expression»,«numeric expression1»,«numeric expression2»)If «logical expression» evaluates to TRUE, this function returns «numeric expression1», otherwise, returns «numeric expression2».StringIIf («logical expression»,«string expression1»,«string expression2»)If «logical expression» evaluates to TRUE, this function returns «string expression1», otherwise, returns «string expression2».Comm

. Next, you need to group the "summary table" obtained above by year and month, and count (Order ID) for order quantity, the sum aggregate function calculates the number of paid orders by summation with conditions. Answer: Select order year, order month, count (Order ID) as order quantity, sum (order sales * iif (whether paid =, 0) as paid order quantity, sum (order sales) as sales from (select list. order ID, order year, order month, order sales, w

This conversion is not very common. For some IIF expressions, You need to convert them to the formats supported by SQL Server. After debugging, you can support nested calls. /**/ /// /// IIF statement in the conversion string /// /// /// Static Public String Changeiif ( String Oldstr) { String Str = O

To make the company's attendance public, you need to write a small page that uses the access file shared by the front-end computer. The page must be able to directly determine whether the employee's work time is equal to the standard, I got everything done in a statement. As a result, I found a strange problem. The same function IIF can be implemented for the part that gets off work, and there is a problem for the part where I go to work. It is actual

Let's take a look at the differences between the two functions. 1. Private Function geteachqty () Function Geteachqty ( Byval OBJ As Object ) As Integer If Isdbnull (OBJ) = False Then Return Convert. toint32 (OBJ) Else Return 0 End If End Function 2. Private Function geteachqty () function geteachqty ( byval OBJ as Object ) as integer return IIF ( isdbnull (O

Ladies and gentlemen, I have found a small problem today. I would like to share it with you here. I hope it will be helpful for your future development and at least take a detour. It is not an esoteric thing, please read the content in a relaxed mood: In VB.net, we can use system. math. log function, but it is different from VB6.0. net support for polymorphism, and log (a) is based on E by default and log (A, newbase). The latter supports changing the base number, such as system. math. log () is

Let's look at the example.Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->1 datatable dt = dgvshowall. datasource as datatable;2 DT. Columns. Add (New datacolumn ("doctype", typeof (string )));3 DT. columns ["doctype"]. expression = "IIF (check_type = 1, 'purchase warehouse receiving ', IIF (check_type = 2, 'check warehouse receiving',

To create a database:1 CREATE DATABASETest--The name of the database to be created2 on PRIMARY3 (4 --specific description of the database file5NAME='Test_data',--logical name of the master data file6FILENAME='E:\project\Test_data.mdf',--physical name of the master data file7SIZE=5MB,--Initial size of master data file8MAXSIZE=100MB,--maximum growth of the master data file9FileGrowth= the% --growth rate of master data filesTen ) One LOG on A ( - --the specific

Access SQL Injection reference Description SQL query and comment Annotator Access does not have a special annotator. Therefore, "/*", "--" and "#" cannot be used. However, you can use the NULL character "NULL" (% 00) instead: 'Union SELECT 1, 1 FROM validTableName % 00 Syntax error message "[Microsoft] [Driver ODBC Microsoft Access]" Multi-sentence

Access SQL Injection referenceVersion 0.2.1(Last updated: 10/10/2007)Unknown Original Author Description SQL query and comment Annotator Access does not have a special annotator. Therefore, "/*", "--" and "#" cannot be used. However, you can use the null character "null" (% 00) instead: 'Union select 1, 1 from validtablename % 00 Syntax error

Access SQL Injection GuideVersion 0.2.1 Description SQL query and comment Annotator Access does not have a special annotator. Therefore, "/*", "--" and "#" cannot be used. However, you can use the null character "null" (% 00) instead: 'Union select 1, 1 from validtablename % 00 Syntax error message "[Microsoft] [Driver ODBC Microsoft Acces

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: Example 1: In the SQL query statement row-to-co

quantity.Select productname, orderidFrom ProductsLeft join orders on products. prductsid = orders. productidThe difference between the right join and the left join is that, no matter whether there are matching records in the left table, it returns all records from the left table.For example, if you want to know the customer information and calculate the customer distribution in each region, you can use a right connection to return the customer information even if there are no customers in a reg

Java. util. Date and Java. SQL. Date, java. SQL. Time, java. SQL. Timestamp interchange, java. SQL. timestamp 1. SQL time type to util time type Principle: java. SQL. date, java. SQL. t

of iif () function in access Injection For some Special injections, the iif () function under ACCESS is still quite useful. For example, when the classic "and 1 = 1" and "and 1 = 2" are used to judge the injection, when no difference is returned on the page, the time difference cannot be used for injection in the access database like mysql, And the iif () The re

Tags: implementation mechanism originally page organizes tables based on free article content index ClustFollowing the book on SQL tuning (SQL tuning or SQL optimization) in the essentials of high-performance SQL tuning and case resolution, we talk today about one of the most important core mechanisms of

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 case when then statements. Access does not have case whenHowev

top * FROM table name ORDER by Rnd (ID) SQL server:select Top n * FROM table name ORDER by NEWID () MySQL select * FROM table name ORDER by rand () Limit n Access left connection syntax (recently developed to use left-side connection, Access Help nothing, no access to the Internet SQL instructions, only the test itself, now write down for later) Syntax select TABLE1.FD1,TABLE1,FD2,TABLE2.FD2 from table1 le