CREATE TABLE table_21479 ("Downstream" TEXT, "Upstream" TEXT, "Bandwidth" TEXT, "Price TL" TEXT, "Every 1 GB" TEXT, "MAX" TEXT)

What is the bandwidth for downstream of 20 mbit/s for 69 tl?
SELECT "Bandwidth" FROM table_21479 WHERE "Downstream" = '20 Mbit/s' AND "Price TL" = '69 TL'
SELECT "Bandwidth" FROM "table_21479" WHERE "Downstream" = '20 Mbit/s' AND "Price TL" = '69 TL'