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package swodb |
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import ( |
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"context" |
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"github.com/jackc/pgx/v5/pgtype" |
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) |
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const activeTxCount = `-- name: ActiveTxCount :one |
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SELECT COUNT(*) |
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FROM pg_stat_activity |
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WHERE "state" <> 'idle' |
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AND "xact_start" <= $1 |
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` |
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func (q *Queries) ActiveTxCount(ctx context.Context, xactStart pgtype.Timestamptz) (int64, error) { |
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row := q.db.QueryRow(ctx, activeTxCount, xactStart) |
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var count int64 |
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err := row.Scan(&count) |
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return count, err |
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} |
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const connectionInfo = `-- name: ConnectionInfo :many |
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SELECT application_name AS NAME, |
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COUNT(*) |
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FROM pg_stat_activity |
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WHERE datname = current_database() |
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GROUP BY NAME |
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` |
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type ConnectionInfoRow struct { |
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Name pgtype.Text |
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Count int64 |
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} |
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func (q *Queries) ConnectionInfo(ctx context.Context) ([]ConnectionInfoRow, error) { |
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rows, err := q.db.Query(ctx, connectionInfo) |
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if err != nil { |
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return nil, err |
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} |
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defer rows.Close() |
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var items []ConnectionInfoRow |
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for rows.Next() { |
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var i ConnectionInfoRow |
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if err := rows.Scan(&i.Name, &i.Count); err != nil { |
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return nil, err |
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} |
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items = append(items, i) |
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} |
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if err := rows.Err(); err != nil { |
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return nil, err |
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} |
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return items, nil |
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} |
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const databaseInfo = `-- name: DatabaseInfo :one |
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SELECT db_id AS id, |
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version() |
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FROM switchover_state |
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` |
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type DatabaseInfoRow struct { |
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ID pgtype.UUID |
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Version string |
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} |
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func (q *Queries) DatabaseInfo(ctx context.Context) (DatabaseInfoRow, error) { |
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row := q.db.QueryRow(ctx, databaseInfo) |
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var i DatabaseInfoRow |
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err := row.Scan(&i.ID, &i.Version) |
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return i, err |
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} |
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const disableChangeLogTriggers = `-- name: DisableChangeLogTriggers :exec |
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UPDATE switchover_state |
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SET current_state = 'idle' |
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WHERE current_state = 'in_progress' |
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` |
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func (q *Queries) DisableChangeLogTriggers(ctx context.Context) error { |
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_, err := q.db.Exec(ctx, disableChangeLogTriggers) |
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return err |
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} |
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const enableChangeLogTriggers = `-- name: EnableChangeLogTriggers :exec |
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UPDATE switchover_state |
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SET current_state = 'in_progress' |
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WHERE current_state = 'idle' |
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` |
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func (q *Queries) EnableChangeLogTriggers(ctx context.Context) error { |
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_, err := q.db.Exec(ctx, enableChangeLogTriggers) |
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return err |
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} |
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const foreignKeyRefs = `-- name: ForeignKeyRefs :many |
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SELECT src.relname::text, |
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dst.relname::text |
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FROM pg_catalog.pg_constraint con |
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JOIN pg_catalog.pg_namespace ns ON ns.nspname = 'public' |
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AND ns.oid = con.connamespace |
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JOIN pg_catalog.pg_class src ON src.oid = con.conrelid |
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JOIN pg_catalog.pg_class dst ON dst.oid = con.confrelid |
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WHERE con.contype = 'f' |
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AND NOT con.condeferrable |
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` |
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type ForeignKeyRefsRow struct { |
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SrcRelname string |
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DstRelname string |
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} |
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func (q *Queries) ForeignKeyRefs(ctx context.Context) ([]ForeignKeyRefsRow, error) { |
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rows, err := q.db.Query(ctx, foreignKeyRefs) |
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if err != nil { |
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return nil, err |
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} |
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defer rows.Close() |
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var items []ForeignKeyRefsRow |
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for rows.Next() { |
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var i ForeignKeyRefsRow |
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if err := rows.Scan(&i.SrcRelname, &i.DstRelname); err != nil { |
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return nil, err |
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} |
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items = append(items, i) |
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} |
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if err := rows.Err(); err != nil { |
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return nil, err |
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} |
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return items, nil |
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} |
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const lastLogID = `-- name: LastLogID :one |
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SELECT COALESCE(MAX(id), 0)::bigint |
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FROM switchover_log |
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` |
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func (q *Queries) LastLogID(ctx context.Context) (int64, error) { |
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row := q.db.QueryRow(ctx, lastLogID) |
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var column_1 int64 |
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err := row.Scan(&column_1) |
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return column_1, err |
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} |
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const logEvents = `-- name: LogEvents :many |
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SELECT id, |
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TIMESTAMP, |
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DATA |
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FROM switchover_log |
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WHERE id > $1 |
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ORDER BY id ASC |
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LIMIT 100 |
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` |
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func (q *Queries) LogEvents(ctx context.Context, id int64) ([]SwitchoverLog, error) { |
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rows, err := q.db.Query(ctx, logEvents, id) |
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if err != nil { |
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return nil, err |
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} |
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defer rows.Close() |
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var items []SwitchoverLog |
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for rows.Next() { |
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var i SwitchoverLog |
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if err := rows.Scan(&i.ID, &i.Timestamp, &i.Data); err != nil { |
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return nil, err |
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} |
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items = append(items, i) |
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} |
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if err := rows.Err(); err != nil { |
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return nil, err |
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} |
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return items, nil |
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} |
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const now = `-- name: Now :one |
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SELECT now()::timestamptz |
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` |
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func (q *Queries) Now(ctx context.Context) (pgtype.Timestamptz, error) { |
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row := q.db.QueryRow(ctx, now) |
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var column_1 pgtype.Timestamptz |
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err := row.Scan(&column_1) |
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return column_1, err |
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} |
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const sWOConnLock = `-- name: SWOConnLock :one |
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WITH LOCK AS ( |
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SELECT |
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pg_advisory_lock_shared(4369)) |
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SELECT |
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current_state = 'use_next_db' |
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FROM |
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LOCK, |
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switchover_state |
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` |
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func (q *Queries) SWOConnLock(ctx context.Context) (bool, error) { |
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row := q.db.QueryRow(ctx, sWOConnLock) |
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var column_1 bool |
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err := row.Scan(&column_1) |
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return column_1, err |
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} |
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const sWOConnUnlockAll = `-- name: SWOConnUnlockAll :exec |
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SELECT |
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pg_advisory_unlock_all() |
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` |
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func (q *Queries) SWOConnUnlockAll(ctx context.Context) error { |
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_, err := q.db.Exec(ctx, sWOConnUnlockAll) |
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return err |
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} |
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const sequenceNames = `-- name: SequenceNames :many |
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SELECT sequence_name::text |
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FROM information_schema.sequences |
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WHERE sequence_catalog = current_database() |
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AND sequence_schema = 'public' |
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AND sequence_name != 'change_log_id_seq' |
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` |
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func (q *Queries) SequenceNames(ctx context.Context) ([]string, error) { |
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rows, err := q.db.Query(ctx, sequenceNames) |
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if err != nil { |
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return nil, err |
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} |
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defer rows.Close() |
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var items []string |
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for rows.Next() { |
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var sequence_name string |
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if err := rows.Scan(&sequence_name); err != nil { |
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return nil, err |
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} |
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items = append(items, sequence_name) |
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} |
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if err := rows.Err(); err != nil { |
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return nil, err |
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} |
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return items, nil |
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} |
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const tableColumns = `-- name: TableColumns :many |
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SELECT col.table_name::text, |
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col.column_name::text, |
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col.data_type::text, |
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col.ordinal_position::INT |
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FROM information_schema.columns col |
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JOIN information_schema.tables t ON t.table_catalog = col.table_catalog |
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AND t.table_schema = col.table_schema |
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AND t.table_name = col.table_name |
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AND t.table_type = 'BASE TABLE' |
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WHERE col.table_catalog = current_database() |
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AND col.table_schema = 'public' |
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` |
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type TableColumnsRow struct { |
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ColTableName string |
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ColColumnName string |
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ColDataType string |
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ColOrdinalPosition int32 |
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} |
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func (q *Queries) TableColumns(ctx context.Context) ([]TableColumnsRow, error) { |
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rows, err := q.db.Query(ctx, tableColumns) |
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if err != nil { |
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return nil, err |
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} |
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defer rows.Close() |
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var items []TableColumnsRow |
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for rows.Next() { |
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var i TableColumnsRow |
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if err := rows.Scan( |
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&i.ColTableName, |
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&i.ColColumnName, |
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&i.ColDataType, |
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&i.ColOrdinalPosition, |
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); err != nil { |
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return nil, err |
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} |
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items = append(items, i) |
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} |
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if err := rows.Err(); err != nil { |
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return nil, err |
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} |
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return items, nil |
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} |
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