Table: ambisonics_data
Columns: horizontal_order
height_order
soundfield_type
number_of_channels
channels

Question: If the channels is wxyzrstuvpq, what is the horizontal order?
SQL: SELECT "horizontal_order" FROM ambisonics_data WHERE "channels" = 'WXYZRSTUVPQ'

Question: If the height order is 1 and the soundfield type is mixed-order, what are all the channels?
SQL: SELECT "channels" FROM ambisonics_data WHERE "soundfield_type" = 'mixed-order' AND "height_order" = 1

Question: If the channels is wxyzuv, what is the number of channels?
SQL: SELECT "number_of_channels" FROM ambisonics_data WHERE "channels" = 'WXYZUV'