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QUESTION ONE: How does one suppress duplicate row entries? QUESTION TWO: In the following case what is causing them to occur? BACKGROUND: I created several tables only to discover that they were not as I wanted them. AFter truncateng each, I dropped what I believed to be poorly structured columns, rearranged some, and added still others. When I tested the result, everything worked great except for one problem -- a single table entry reuslted in duplicate rows. THE TABLE STRUCTURE CREATE TABLE 'table_name' (obs` int(5) NOT NULL AUTO_INCREMENT . . . PRIMARY KEY (`obs