IS NULL syntax in Informatica?
Returns whether a value is NULL. ISNULL evaluates an empty string as FALSE. To test for empty strings, use LENGTH….Example.
| ITEM_NAME | RETURN VALUE |
|---|---|
| Regulator system | 0 (FALSE) |
| ” | 0 (FALSE) Empty string is not NULL |
How do you concatenate expression transformation in Informatica?
How to concatenate the first and last name – Expression…
- Using expression transformation we can combine two strings to a single string and load to target.
- Source Table.
- Target Table.
- Transformation.
- Function.
- To concatenate first & last name with no space in between.
- build an expression using CONCAT function.
How do you find the position of a character in a string in Informatica?
If you want to search for a character string, enclose the characters you want to search for in single quotation marks, for example ‘abc’. Must be an integer value. The position in the string where you want to start the search. You can enter any valid transformation expression.
What is expression transformation in Informatica?
The Expression transformation calculates values within a single row. Use the Expression transformation to perform non-aggregate calculations. For example, you might use an Expression transformation to adjust bonus percentages or to concatenate first and last names.
How do you handle nulls in Informatica?
To check for null values in columns, you must use the ISNULL() in comparison expressions. handles null values in comparison expressions in the Lookup transformation.
What does || mean in Informatica?
Use the || string operator to concatenate two strings. The || operator converts operands of any datatype (except Binary) to String datatypes before concatenation: Input Value. Return Value.
How do you round off decimals in Informatica?
Use operators to perform arithmetic before you round off the values. , the function rounds off to this number of decimal places. For example, ROUND(12.99, 1) returns 13.0 and ROUND(15.44, 1) returns 15.4. , the function rounds off this number of digits to the left of the decimal point, returning an integer.
Why do we use expression transformation?
Expression transformations are used for row-wise manipulation. For any manipulation, you wish to perform on an individual record, use an Expression transformation. The Expression transformation accepts the row-wise data, manipulates it, and passes it to the target.
When do you use the IIf function syntax?
You can use IIf anywhere you can use expressions. You use IIf to determine if another expression is true or false. If the expression is true, IIf returns one value; if it is false, IIf returns another. You specify the values IIf returns. The IIf function syntax has these arguments: Required.
When do you use IIF the return value is the same as the datatype?
When you use IIF, the datatype of the return value is the same as the datatype of the result with the greatest precision. For example, you have the following expression: IIF( SALES < 100, 1, .3333 ) The TRUE result (1) is an integer and the FALSE result (.3333) is a decimal.
Which is a valid transformation expression in IIF?
You can enter any valid transformation expression that evaluates to TRUE or FALSE. Any datatype except Binary. The value you want to return if the condition is TRUE. The return value is always the datatype specified by this argument. You can enter any valid transformation expression, including another IIF expression.
When to return ” some other language ” in IIF?
Since each nested IIf function is the falsepart argument of the IIf function that contains it, the text “Some other language” is only returned if all the expr arguments of all the IIf functions evaluate to False. For another example, suppose you work at a library.