PostgreSQL で 1 つのテーブルを暗号化/復号化する大きなクエリがあります。このクエリに新しい条件を追加したところ、エラーがスローされました。元のクエリは、日付と内部結合の関連性に基づいてすべてのレコードを取得します (条件を満たす tblSessions からのすべてのレコード)。
更新されたクエリは、parent_session_idが null でない tblSessions からレコードのみを取得します (子レコードを持つ tblSessions からのレコードは結果から除外されます)。
tblsessions (only showing fields that pertain to join conditions)
sessionid | decision_id | start_time | end_time | is_comlete | parent_session_id
---------------------------------------------------------------------------------
SERIAL | BYTEA | BYTEA | BYTEA | BYTEA | INTEGER DEFAULT 0
Posgres の SQL ウィンドウで、2 番目のクエリを実行すると、次のエラーが表示されます。
エラー: 関数 decrypt(integer, "unknown", "unknown") は存在しません SQL 状態: 42883 ヒント: 指定された名前と引数の型に一致する関数はありません。明示的な型キャストを追加する必要がある場合があります。
元のクエリ (作品):
SELECT z.conditionname, x.name AS domainname, d.decisionName,
c.firstname AS counselor_first_name, c.lastname AS counselor_last_name,
o.name AS organization_name,
encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape') AS start_time,
encode(decrypt(s.end_time, '####salt####', '###encryption mode###'), 'escape') AS end_time,
encode(decrypt(s.is_complete, '####salt####', '###encryption mode###'), 'escape') AS is_complete,
s.parent_session_id
FROM tblDecisions d
INNER JOIN tblSessions s ON encode(decrypt(s.decision_id, '####salt####', '###encryption mode###'), 'escape') = d.decisionid
INNER JOIN tblCounselors c ON encode(decrypt(s.counselor_ck, '####salt####', '###encryption mode###'), 'escape') = c.campuskey
INNER JOIN tblCounselor_to_organization co ON co.counselor_id = c.counselorid
INNER JOIN tblOrganizations o ON o.organizationid = co.organization_id
INNER JOIN tblDomains x ON x.domainid = d.domain_id
INNER JOIN tblConditions z ON z.conditionid = x.condition_id
AND encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape') >= '2012-01-01 00:00:00'
AND encode(decrypt(s.is_complete, '####salt####', '###encryption mode###'), 'escape') = 'true'
ORDER BY encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape'), encode(decrypt(s.last_name, '####salt####', '###encryption mode###'), 'escape'), encode(decrypt(s.first_name, '####salt####', '###encryption mode###'), 'escape')
改訂されたクエリ (機能しません。以下にコメントを追加)
SELECT z.conditionname, x.name AS domainname, d.decisionName,
c.firstname AS counselor_first_name, c.lastname AS counselor_last_name,
o.name AS organization_name,
encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape') AS start_time,
encode(decrypt(s.end_time, '####salt####', '###encryption mode###'), 'escape') AS end_time,
encode(decrypt(s.is_complete, '####salt####', '###encryption mode###'), 'escape') AS is_complete,
s.parent_session_id
//////// ADDITION START
, (SELECT MAX(encode(decrypt(start_time, '####salt####', '###encryption mode###'), 'escape')) AS start_time
FROM tblSessions s2
WHERE encode(decrypt(s2.parent_session_id, '####salt####', '###encryption mode###'), 'escape') = encode(decrypt(s.parent_session_id, '####salt####', '###encryption mode###'), 'escape') )
//////// ADDITION END
FROM tblDecisions d
INNER JOIN tblSessions s ON encode(decrypt(s.decision_id, '####salt####', '###encryption mode###'), 'escape') = d.decisionid
INNER JOIN tblCounselors c ON encode(decrypt(s.counselor_ck, '####salt####', '###encryption mode###'), 'escape') = c.campuskey
INNER JOIN tblCounselor_to_organization co ON co.counselor_id = c.counselorid
INNER JOIN tblOrganizations o ON o.organizationid = co.organization_id
INNER JOIN tblDomains x ON x.domainid = d.domain_id
INNER JOIN tblConditions z ON z.conditionid = x.condition_id
AND encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape') >= '2012-01-01 00:00:00'
AND encode(decrypt(s.is_complete, '####salt####', '###encryption mode###'), 'escape') = 'true'
/////// ADDITION START
AND NOT EXISTS (
SELECT 1
FROM tblSessions s1
WHERE encode(decrypt(s1.parent_session_id, '####salt####', '###encryption mode###'), 'escape') = encode(decrypt(s.sessionid, '####salt####', '###encryption mode###'), 'escape') )
AND (
( encode(decrypt(s.parent_session_id, '####salt####', '###encryption mode###'), 'escape') IS NULL) OR
( encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape') = (
SELECT MAX(encode(decrypt(start_time, '####salt####', '###encryption mode###'), 'escape')) AS start_time
FROM tblSessions s2
WHERE encode(decrypt(s2.parent_session_id, '####salt####', '###encryption mode###'), 'escape') = encode(decrypt(s.parent_session_id, '####salt####', '###encryption mode###'), 'escape')
)
)
)
///////// ADDITION END
ORDER BY encode(decrypt(s.start_time, '####salt####', '###encryption mode###'), 'escape'), encode(decrypt(s.last_name, '####salt####', '###encryption mode###'), 'escape'), encode(decrypt(s.first_name, '####salt####', '###encryption mode###'), 'escape')
エラー メッセージは理解できますが、クエリへのすべての追加が適切にデコードされているため、それが実際の問題であるとは言えません。明らかな何かが欠けていますか?