If this is SAS code for a where clause, you may also have another problem. Using e.g. "contract_type in(36,40-53)" will not generate an error, but: SAS interpretes this as "contract_type in(36,40,-53)" which is probably not what you want. If this is SQL code that you are submitting to some database as passthrough, it might work. In that case you should check the documentation for the database.
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