Spanner Power shovel is a tool to output Spanner's Query result as CSV. It helps to output huge Query results from Spanner.
go run *.go -project=gcpug-public-spanner \
-instance=merpay-sponsored-instance \
-database=sinmetal \
-sql-file-path=/Users/sinmetal/go/src/github.com/gcpug/spshovel/example.sql
go run *.go -project=gcpug-public-spanner \
-instance=merpay-sponsored-instance \
-database=sinmetal \
-sql-file-path=/Users/sinmetal/go/src/github.com/gcpug/spshovel/example.sql\
--no-header=true