SELECT * FROM replicas WHERE updated_at > $1 AND stopped_at IS NULL;

SELECT * FROM replicas WHERE id = $1;

INSERT INTO replicas (

id,

created_at,

started_at,

updated_at,

hostname,

region_id,

relay_address,

version,

database_latency,

"primary"

) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING *;

UPDATE replicas SET

updated_at = $2,

started_at = $3,

stopped_at = $4,

relay_address = $5,

region_id = $6,

hostname = $7,

version = $8,

error = $9,

database_latency = $10,

"primary" = $11

WHERE id = $1 RETURNING *;

DELETE FROM replicas WHERE updated_at < $1;