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SAP Business Objects – Context Operators in WEBI
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What is the syntax of DECODE function in Oracle?
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Syntax. The syntax of the DECODE function is: DECODE ( expression, search, result [, search, result]… [,default] ) DECODE Function Parameters. The parameters of the Oracle DECODE function are: expression (mandatory): This is the value to compare. search (mandatory): This is the value to compare against the expression.
What is the use of DECODE function in Oracle?
The DECODE function is supported in the various versions of the Oracle/PLSQL, including, Oracle 12c, Oracle 11g, Oracle 10g and Oracle 9i. DECODE ( expression, search, result, search, result… , default ) expression: It is used to specify the value to be compared. search: It is used to specify the value to be compared against expression.
What is the syntax of decode in PLSQL?
Syntax. The syntax for the DECODE function in Oracle/PLSQL is: DECODE( expression , search , result [, search , result]… [, default] ) Parameters or Arguments expression The value to compare. It is automatically converted to the data type of the first search value before comparing. search The value that is compared against expression.
What type of data type does Oracle decode return string?
If search value, actual expression and the result can be any one of the data types such as char, varchar2, nchar or nvarchar. At that time oracle decode function returned string is varchar2 data types and it is the same character set as the first search result parameter.
What is the basic syntax for writing DECODE function in SQL?
Hadoop, Data Science, Statistics & others. The basic syntax for writing DECODE function in SQL is as follows: DECODE (expression , search_1, result_1 [, search_2, result_2], …, [,search_n,result_n] [, default]);
What is the use of decode in SQL?
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DECODE function in Standard Query Language (SQL) is used to add procedural IF – THEN – ELSE like statements to a query. It compares a given expression with each search value one by one and returns a result on the basis of outcomes received from the comparison. A decode function basically performs the task of CASE statements.
What is DECODE function in SQL?
Let’s start one by one. What is DECODE function in SQL? In Oracle, DECODE function allows us to add procedural if-then-else logic to the query. DECODE compares the expression to each search value one by one.
What is the use of PL/SQL DECODE function?
Pl/SQL decode function is used for evaluating the same logic as that of if else and if else if ladder. The decode function has the advantage that the while of the if else condition or else if ladder can be placed in the single line simplifying the code for reading.
What are the advantages of the DECODE function in C++?
The decode function has the advantage that the while of the if else condition or else if ladder can be placed in the single line simplifying the code for reading. However, we can only compare the values specified in the parameters of the function in decode function.
What is the difference between a search and a DECODE function?
It compares a given expression with each search value one by one and returns a result on the basis of outcomes received from the comparison. A decode function basically performs the task of CASE statements.
What is an example of using Decode in a where clause?
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This is an example of using Oracle DECODE in a WHERE clause. This only shows records where the DECODE function returns ‘North America’. This example uses DECODE to find if a value is contained in another value, similar to the LIKE function.
extended example: WHERE Dop_id = (DECODE (‘&prep_flag’, ‘Yes’, (SELECT Dop_id FROM ( SELECT DOP_id, name FROM TABLE) WHERE name IS NOT NULL) , Dop_id)) as mention this works if the select statmen returns on row, and not several. sql oracle plsqldeveloper Share Follow edited Oct 16, 2012 at 23:16 asked Oct 16, 2012 at 22:38 Ishamael 51 1 2 9 2
Can you use The DECODE function in the where clause?
Yes, you can use DECODE in the WHERE clause. It’s done in the same way as any other checks. See the examples section below for an example on how to use the DECODE function in the WHERE clause. Can You Use The Oracle DECODE Function With LIKE? The DECODE function is used to find exact matches.
What is the difference between decode and select?
And Decode works in a similar fashion, although I think it’s less readable. SELECT (columns list) FROM AGREEMENT A WHERE A.ACCOUNT = 545 AND A.GRP_ID = DECODE (?, 0, A.GRP_ID, ?) But given the use case, making the parameter NULL would be a little better.
What is the use of decode in SQL?
DECODE function in Standard Query Language (SQL) is used to add procedural IF – THEN – ELSE like statements to a query. It compares a given expression with each search value one by one and returns a result on the basis of outcomes received from the comparison. A decode function basically performs the task of CASE statements.
What are some examples of where clauses in SQL?
Let’s look at the examples. In this example, we’ll use a simple SQL WHERE clause that shows all of the employees that have a salary of 40000. We simply add the condition to the WHERE clause. In this example, the condition is where the salary column is equal to 40000.
What is the difference between a search and a DECODE function?
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It compares a given expression with each search value one by one and returns a result on the basis of outcomes received from the comparison. A decode function basically performs the task of CASE statements.
References:
Oracle DECODE Function Explained with Examples
SQL DECODE() | How DECODE() Function works in SQL? Examples
Oracle DECODE Function Explained with Examples
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Questions just answered:
What is the use of DECODE function in Oracle?
What is the syntax of decode in PLSQL?
What type of data type does Oracle decode return string?
What is the basic syntax for writing DECODE function in SQL?
What is the syntax of DECODE function in Oracle?
Can you use The DECODE function in the where clause?
What is the difference between decode and select?
What is the use of decode in SQL?
What are some examples of where clauses in SQL?
What is an example of using Decode in a where clause?
What is the difference between a search and a DECODE function?
What is DECODE function in SQL?
What is the use of PL/SQL DECODE function?
What are the advantages of the DECODE function in C++?
What is the difference between a search and a DECODE function?
What is the use of decode in SQL?
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