Redis Mass Insertion from Postgresql file - postgresql

Question

Hello I am trying to migrate from Mysql to Postgresql.
I have an SQL file which queries some records and I want to put this in Redis with mass insert.
In Mysql it was working below this sample command;
sudo mysql -h $DB_HOST -u $DB_USERNAME -p$DB_PASSWORD $DB_DATABASE --skip-column-names --raw < test.sql | redis-cli --pipe
I figured out test.sql file for Postgresql syntax.
SELECT
'*3\r\n' ||
'$' || length(redis_cmd::text) || '\r\n' || redis_cmd::text || '\r\n' ||
'$' || length(redis_key::text) || '\r\n' || redis_key::text || '\r\n' ||
'$' || length(sval::text) || '\r\n' || sval::text || '\r\n'
FROM (
SELECT
'SET' as redis_cmd,
'ddi_lemmas:' || id::text AS redis_key,
lemma AS sval
FROM ddi_lemmas
) AS t
and its one output like
"*3\r\n$3\r\nSET\r\n$11\r\nddi_lemmas:1\r\n$22\r\nabil+abil+neg+aor+pagr\r\n"
But I couldn't find any example like Mysql command piping from command line.
There are some examples that have two stages not directly (first insert to a txt file and then put it in Redis)
sudo PGPASSWORD=$PASSWORD psql -U $USERNAME -h $HOSTNAME -d $DATABASE -f test.sql > data.txt
Above command working but with column names which i dont want.
I am trying to find directly send output of Postgresql result to Redis.
Could you help me please?
Solution:
If I want to insert with RESP commands from a sql file. (with the help of #teppic )
echo -e "$(psql -U $USERNAME -h $HOSTNAME -d $DATABASE -AEt -f test.sql)" | redis-cli --pipe

Answer 1

From the psql man page, -t will "Turn off printing of column names and result row count footers, etc."
-A turns off alignment, and -q sets "quiet" mode.
It looks like you're outputting RESP commands, in which case you'll have to use the escaped string format to get the newline/carriage return pairs, e.g. E'*3\r\n' (note the E).
It might be simpler to pipe SET commands to redis-cli:
psql -At -c "SELECT 'SET ddi_lemmas:' || id :: TEXT || ' ' || lemma FROM ddi_lemmas" | redis-cli