sql - How to check the file path exists in sybase? -

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how check filename exists in sybase sql anywhere11 , return error message if not in sql anywhere11?

i have textbox , submit button in front end. user can enter file path textbox , click submit.

the submit button call procedure , want check in beginning of procedure weather file exists or not , return value if not exists.

example:

d:/hello/world.csv path name.

so need check d:/hello valid path , world.csv exist in specified path.

thanks


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