(TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME srcbucket) (TOK_TABLEBUCKETSAMPLE 1 4 (TOK_TABLE_OR_COL key)) s)) (TOK_INSERT (TOK_DESTINATION (TOK_TAB (TOK_TABNAME dest1))) (TOK_SELECT (TOK_SELEXPR (TOK_ALLCOLREF (TOK_TABNAME s)))))) null