What is Dcount in Datastage?
What is Dcount in Datastage?
Description. Use the DCOUNT function to return the number of delimited fields in a data string. string is an expression that evaluates to the data string to be searched. delimiter is an expression that evaluates to the delimiter separating the fields to be counted.
What is field function in Datastage?
Description. Use the FIELD function to return one or more substrings located between specified delimiters in string. delimiter evaluates to any character, including field mark, value mark, and subvalue marks. It delimits the start and end of the substring.
How do I replace a string in DataStage?
Use the EREPLACE function to replace substring in expression with another substring. If you do not specify occurrence, each occurrence of substring is replaced. occurrence specifies the number of occurrences of substring to replace. To replace all occurrences, specify occurrence as a number less than 1.
How do I delete junk characters in Datastage?
You can use double Convert function in transformer, it will remove all the junk characters other than alphabets and numbers.
How do I replace a string in Datastage?
How do I use the dcount function?
Use the DCount function when you must count records in a domain from within a code module or macro, or in a calculated control. You can use the DCount function to count the number of records containing a particular field that isn’t in the record source on which your form or report is based.
What is dcount criteria in SQL?
A string expression used to restrict the range of data on which the DCount function is performed. For example, criteria is often equivalent to the WHERE clause in an SQL expression, without the word WHERE. If criteria is omitted, the DCount function evaluates expr against the entire domain.
What is the difference between count and dcount in SQL?
Use the Count function in a query expression instead of the DCount function, and set optional criteria to enforce any restrictions on the results. Use the DCount function when you must count records in a domain from within a code module or macro, or in a calculated control.
Which Infosphere functions are valid in IBM® InfoSphere FastTrack?
The functions that are valid in InfoSphere® DataStage® and QualityStage Designer are also valid in IBM® InfoSphere FastTrack . The list of functions in this section are generally used when defining a column derivation in a Transformer stage.
