How do I decode in SQL Developer?
How do I decode in SQL Developer?
DECODE compares expr to each search value one by one. If expr is equal to a search , then Oracle Database returns the corresponding result . If no match is found, then Oracle returns default . If default is omitted, then Oracle returns null.
Does decode work in SQL Server?
In Oracle, you can use DECODE function to evaluate a list of expressions, and if a value is matched return the corresponding result. In SQL Server, you can use CASE expression that is also supported by Oracle.
What is difference between Case and decode?
CASE is a statement while DECODE is a function. CASE can work with logical operators other than ‘=’ : DECODE performs an equality check only. CASE is capable of other logical comparisons such as < ,> ,BETWEEN , LIKE etc.
Can we use decode function in where clause?
2 Answers. And Decode works in a similar fashion, although I think it’s less readable. SELECT (columns list) FROM AGREEMENT A WHERE A.
What is decode function?
The DECODE function returns a value that is the same datatype as the first result in the list. If the first result has a datatype of CHAR, then the return value is converted to VARCHAR2. If no matches are found, the default value is returned. If default is omitted and no matches are found, then NULL is returned.
How does decode function work?
The DECODE function returns a value that is the same datatype as the first result in the list. If the first result is NULL, then the return value is converted to VARCHAR2. If the first result has a datatype of CHAR, then the return value is converted to VARCHAR2. If no matches are found, the default value is returned.
What is DECODE function used for?
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 like function in SQL?
The SQL LIKE condition allows you to use wildcards to perform pattern matching in a query. The LIKE condition is used in the WHERE clause of a SELECT, INSERT, UPDATE, or DELETE statement.
How do you find a string in SQL?
How to Find a String within a String in SQL Server. In SQL Server, you can use the T-SQL CHARINDEX() function or the PATINDEX() function to find a string within another string.
Where is function SQL?
The SQL WHERE clause is used to filter the results and apply conditions in a SELECT, INSERT, UPDATE, or DELETE statement.