Is there an easy way to add a letter to existing value in field. For example, I want to add a letter "s' to all the catalog number, converting the catalog number to 'sATR-93,'' 'sATR-94', 'sly-1' and 'sly-2'. Thanks
Yes, there is possibility to create new calculated field of the string type:
with simple expression like: "s" + catalog_number_variable
Will give the result in calculated field, which is not searchable. Then select the calculated field column and right click to the header of the column as seen in screenshot. Use Convert type... function to obtain new regular text field with desired catalog number format. This new column can be used instead and independently on previous columns.
I added "new caculated text field" and put the expression "s" + catalog_number_variable , but there is error message when I press the "validate" button.
Please use catalogNumber instead of catalog_number_variable in the expression. Where catalogNumber is the variable name, which can be seen in the "Variable name" column in "Variables:" table.
So in your particular case it should probably be:
"s" + catalogNumber