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Update the upgrade sql to rename the duplicate records

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Rename the "name" colume in table "replication_policy" and "replication_target" before adding the "UNIQUE" constraint to avoid the upgrade failure

Signed-off-by: Wenkai Yin <yinw@vmware.com>
This commit is contained in:
Wenkai Yin 2019-01-02 18:07:46 +08:00
parent 866a86b6f1
commit edcbb8f29f
1 changed files with 43 additions and 0 deletions
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43
make/migrations/postgresql/0002_1.7.0_schema.up.sql
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@ -11,5 +11,48 @@ create table job_log (
CREATE UNIQUE INDEX job_log_uuid ON job_log (job_uuid);
/*
Rename the duplicate names before adding "UNIQUE" constraint
*/
DO $$
BEGIN
WHILE EXISTS (SELECT count(*) FROM replication_policy GROUP BY name HAVING count(*) > 1) LOOP
UPDATE replication_policy AS r
SET name = (
/*
truncate the name if it is too long after appending the sequence number
*/
CASE WHEN (length(name)+length(v.seq::text)+1) > 256
THEN
substring(name from 1 for (255-length(v.seq::text))) || '_' || v.seq
ELSE
name || '_' || v.seq
END
)
FROM (SELECT id, row_number() OVER (PARTITION BY name ORDER BY id) AS seq FROM replication_policy) AS v
WHERE r.id = v.id AND v.seq > 1;
END LOOP;
END $$;
/*
Rename the duplicate names before adding "UNIQUE" constraint
*/
DO $$
BEGIN
WHILE EXISTS (SELECT count(*) FROM replication_target GROUP BY name HAVING count(*) > 1) LOOP
UPDATE replication_target AS t
SET name = (
CASE WHEN (length(name)+length(v.seq::text)+1) > 64
THEN
substring(name from 1 for (63-length(v.seq::text))) || '_' || v.seq
ELSE
name || '_' || v.seq
END
)
FROM (SELECT id, row_number() OVER (PARTITION BY name ORDER BY id) AS seq FROM replication_target) AS v
WHERE t.id = v.id AND v.seq > 1;
END LOOP;
END $$;
ALTER TABLE replication_policy ADD CONSTRAINT unique_policy_name UNIQUE (name);
ALTER TABLE replication_target ADD CONSTRAINT unique_target_name UNIQUE (name);