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in eprm_join_cols_reim row the data will be like --->
reim.entity_id=tppa.product_id AND reim.op_id=tppa.op_id AND reim.bu_id=tppa.bu_id AND reim.version=tppa.version

so while placing above values in dynamic query you need to replace and with , and you have to replace reim.enity_id=tppa.,reim.op_id=tppa. like that you have replace every value upto after = . in value assignment dynaicaly