CREATE TABLE table_6490 ("Source" CLOB, "Date" CLOB, "GERB" CLOB, "Attack" CLOB, "Blue Coalition" CLOB)

What Attack has a 30,00% GERB?
SELECT "Attack" FROM table_6490 WHERE "GERB" = '30,00%'
SELECT "Attack" FROM "table_6490" WHERE "GERB" = '30,00%'