I would suggest you repost your question to the solr-user@lucene mailing list -- the explicit purpose of that list is discussion among solr users.
I can tell you up front, it's going ot be hard for people to help you w/o more details -- mainly the actual DIH config file you are using, the schema for your tables, and the details the DIH logs when you do a full import https://wiki.apache.org/solr/UsingMailingLists : Hi everyone i am new to solr i have imported my db table product into solr : with data import handler. : : my product table have 12516 rows in it, each row have a unique sku that is : the column. : : but when i try to run *:* it displays ----> numFound="10495". : : there are no errors when i am doing full import. : : This is kind of tricky for me. if any one can help it will be much : appreciated. : : thanks : Jamal. -Hoss