Shell commands to ALTER a CitusDB distributed table

alter-citusdb-table.sh

TABLE_NAME=customer_reviews
ALTER_COMMAND="ALTER COLUMN customer_id SET STATISTICS 1000"

/opt/citusdb/3.0/bin/psql -h localhost -d postgres -c "ALTER TABLE $TABLE_NAME $ALTER_COMMAND"
/opt/citusdb/3.0/bin/psql -tA -F" " -h localhost -d postgres -c "select relname, s.shardid, p.nodename, p.nodeport from pg_class c, pg_dist_shard s, pg_dist_shard_placement p where s.logicalrelid = c.oid and s.shardid = p.shardid and relname = '$TABLE_NAME'" | xargs -n 4 -P 100 sh -c '/opt/citusdb/3.0/bin/psql -h $3 -p $4 -d postgres -c "ALTER TABLE $1_$2 $0;"' "$ALTER_COMMAND"