Question: What is the weight with a cross section area of 25.3?
SQL: SELECT "Weight (kg/m)" FROM "1-2071644-2" WHERE "Cross-section area (cm 2 )" = '25.3';

Question: How many weights are there when the flange with is 304?
SQL: SELECT COUNT("Weight (kg/m)") FROM "1-2071644-2" WHERE "Flange width (mm)" = 304.0;

Question: What is the web thickness if the flange width is 100?
SQL: SELECT "Web thickness (mm)" FROM "1-2071644-2" WHERE "Flange width (mm)" = 100.0;

Question: If the cross-section area is 21.2, what is the weight?
SQL: SELECT "Weight (kg/m)" FROM "1-2071644-2" WHERE "Cross-section area (cm 2 )" = '21.2';

Question: What is the flange thickness when the weight is 19.9?
SQL: SELECT "Flange thickness (mm)" FROM "1-2071644-2" WHERE "Weight (kg/m)" = '19.9';