Table: pv_cell_specs
Columns: technology
col
v_oc_v
i_sc_a
w_m
t_m

Question: What is the total number of t (µm), when Technology is u c-si?
SQL: SELECT COUNT("t_m") FROM pv_cell_specs WHERE "technology" = 'u c-si'

Question: What is the V OC (V), when t (µm) is greater than 5, and when I SC (A) is 0.8?
SQL: SELECT "v_oc_v" FROM pv_cell_specs WHERE "t_m" > 5 AND "i_sc_a" = '0.8'

Question: What is the sum of t (µm), when Technology is MJ?
SQL: SELECT SUM("t_m") FROM pv_cell_specs WHERE "technology" = 'mj'

Question: What is W/m², when η (%) is greater than 16.5, and when Technology is MJ?
SQL: SELECT "w_m" FROM pv_cell_specs WHERE "col" > 16.5 AND "technology" = 'mj'