CREATE TABLE repair_assignment (technician_id INT, repair_ID INT, Machine_ID INT)
CREATE TABLE technician (technician_id FLOAT, Name TEXT, Team TEXT, Starting_Year FLOAT, Age INT)
CREATE TABLE machine (Machine_ID INT, Making_Year INT, Class TEXT, Team TEXT, Machine_series TEXT, value_points FLOAT, quality_rank INT)
CREATE TABLE repair (repair_ID INT, name TEXT, Launch_Date TEXT, Notes TEXT)

A bar chart for what are the number of the names of the technicians that are assigned to repair machines with more point values than 70?, list in asc by the names.
SELECT Name, COUNT(Name) FROM repair_assignment AS T1 JOIN machine AS T2 ON T1.Machine_ID = T2.Machine_ID JOIN technician AS T3 ON T1.technician_id = T3.technician_id WHERE T2.value_points > 70 GROUP BY Name ORDER BY Name
SELECT "Name", COUNT("Name") FROM "repair_assignment" AS "T1" JOIN "machine" AS "T2" ON "T1"."Machine_ID" = "T2"."Machine_ID" AND "T2"."value_points" > 70 JOIN "technician" AS "T3" ON "T1"."technician_id" = "T3"."technician_id" GROUP BY "Name" ORDER BY "Name" NULLS FIRST