table creation failed

[hishamag-student]

Create "Table" and "Streams" in KSQL, see them getting reflected in PostgreSQL kafKa_test.
can you please provide me with an example of table and how to link it, to produce the table on postgres after transformations.
I tried this but no table created
CREATE STREAM "event_user" (
identity_id STRING,
name STRING,
family_name STRING,
event_id STRING,
event_type STRING
)
WITH (
KAFKA_TOPIC='event_user',
PARTITIONS=1,
REPLICAS=1,
VALUE_FORMAT='JSON'
);

CREATE STREAM "sink_denormalised_user" WITH (
VALUE_FORMAT='AVRO'
) AS
SELECT
identity_id as "id",
name as "name",
family_name as "family_name",
name + ' ' + family_name AS "full_name",
SUBSTRING(UCASE(name), 1, 1) + SUBSTRING(UCASE(family_name), 1, 1) as "initials",
event_id as "event_id"
FROM "event_user"
EMIT CHANGES
PARTITION BY "id";