case expression

The CASE expression returns a value based on the conditional logic. In the development process, we often need to return a value for a column based on the conditional logic. In this CASE, we need to use the CASE expression. For example, the following

Case statements and case expressions are an important part of PLSQL Process Control. Although they are easy to use, they are easy to confuse. This article describes the case statement and the case expression, and provides an example This helps you

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

I. BACKGROUNDResc table preserves the system's first-level, two-level functional modules, while preserving the function of the two-level function module pages, the PID defines the parent-child relationship.Want to through the Resc table, sorting out

Today's programming. The following functions are required in the keyboard response function, Void keyboard (unsigned char key, int X, int y) {Switch (key) {Case "S": Case "S": anglex + = 15.0; fig (); break; Case "D": Case "D ": angley + = 15.0; fig

In our development process, we often need to return a value for a column, based on conditional logic, then we need to use the case expression. For example, the following query to the Products table uses a CASE expression in the SELECT statement to

Case statements and case expressions are an important part of plsql Process Control. Although they are easy to use, they are easy to confuse. This article describes the case statement and case expression, and provides a demonstration to better

From a in mm_xxzxWhere. cjrid = 1 & (. djlx = 0 |. djlx = 1 |. djlx = 5 |. djlx = 6 |. djlx = 7)Orderby A. djlxSelect New{Xxlxmc = A. djlx = 0? "Repair Plan": (A. djlx = 1? "Repair task list": (A. djlx = 2? "Spare parts warehouse receiving ticket": (

Ashamed to say, since the FB1.5 out, has not been in the deep excavation of its new features, but when it is an IB to treat a continuation-as long as the smooth transplant, even if OK. Ashamed to say, since the FB1.5 out, has not been in the deep

There are two forms of Ruby case expressions: The first form is similar to a set of continuous if statements: it allows you to list a set of conditions and execute the first statement corresponding to the true condition expression. In the second

Ruby: Case expression and rubycase expression There are two forms of Ruby case expressions: The first form is similar to a set of continuous if statements: it allows you to list a set of conditions and execute the first statement corresponding to

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

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, and Oracle9i

ArticleDirectory Basic syntax Examples Coalesce and nullif Functions Conclusion The difference between the expression and the as expression after the case and the end is the most obvious -- Oracle Select

A. Using a SELECT statement with a case-simple expressionUsing a SELECT statement with a simple case expressionIn a SELECT statement, the case simple expression can only be used for equivalence checking, without making other comparisons. The

Tips for using functions in Oracle (2)-The NULLIF function provides the abbreviated CASE expression through a comparison expression. Syntax NULLIF (expression-1, expression-2) the expression to be compared with expression-1. Expression-2: The

Case BriefA column-based logical expression is actually a case expression. Can be used after Select,update,delete,set and in,where,order by and having clauses. Since this is a T-SQL query, only the case expression is used in the SELECT clause and

Case BriefA column-based logical expression is actually a case expression. Can be used after Select,update,delete,set and in,where,order by and having clauses. Since this is a T-SQL query, only the case expression is used in the SELECT clause and

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 PL/SQL. CASE expression for value matchingThe CASE expression is more flexible than the DECODE function. In its

Introduction T-SQL is not just a language for querying a database, or a language that can manipulate data. Column-based case expressions are one of them, unlike other query statements that can be substituted for each other (for example, queries