Add a time-of-preparation column to the pg_prepared_xacts view, per an
old suggestion by Oliver Jowett. Also, add a transaction column to the pg_locks view to show the xid of each transaction holding or awaiting locks; this allows prepared transactions to be properly associated with the locks they own. There was already a column named 'transaction', and I chose to rename it to 'transactionid' --- since this column is new in the current devel cycle there should be no backwards compatibility issue to worry about.
This commit is contained in:
Tom Lane
parent
66b098492e
commit
a8d1075f27
@ -1,6 +1,6 @@
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<!--
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Documentation of the system catalogs, directed toward PostgreSQL developers
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$PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.104 2005/06/17 22:32:41 tgl Exp $
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$PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.105 2005/06/18 19:33:41 tgl Exp $
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-->
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<chapter id="catalogs">
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@ -4090,7 +4090,7 @@
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<literal>extend</>,
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<literal>page</>,
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<literal>tuple</>,
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<literal>transaction</>,
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<literal>transactionid</>,
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<literal>object</>, or
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<literal>userlock</>
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</entry>
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@ -4132,7 +4132,7 @@
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</entry>
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</row>
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<row>
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<entry><structfield>transaction</structfield></entry>
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<entry><structfield>transactionid</structfield></entry>
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<entry><type>xid</type></entry>
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<entry></entry>
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<entry>
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@ -4168,13 +4168,21 @@
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zero. NULL if the object is not a general database object
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</entry>
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</row>
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<row>
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<entry><structfield>transaction</structfield></entry>
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<entry><type>xid</type></entry>
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<entry></entry>
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<entry>
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ID of the transaction that is holding or awaiting this lock.
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</entry>
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</row>
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<row>
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<entry><structfield>pid</structfield></entry>
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<entry><type>integer</type></entry>
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<entry></entry>
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<entry>
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Process ID of the server process holding or awaiting this
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lock. Zero if the lock is held by a prepared transaction.
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lock. Null if the lock is held by a prepared transaction.
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</entry>
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</row>
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<row>
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@ -4196,12 +4204,12 @@
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<para>
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<structfield>granted</structfield> is true in a row representing a lock
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held by the indicated session. False indicates that this session is
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held by the indicated transaction. False indicates that this transaction is
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currently waiting to acquire this lock, which implies that some other
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session is holding a conflicting lock mode on the same lockable object.
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The waiting session will sleep until the other lock is released (or a
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deadlock situation is detected). A single session can be waiting to acquire
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at most one lock at a time.
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transaction is holding a conflicting lock mode on the same lockable object.
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The waiting transaction will sleep until the other lock is released (or a
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deadlock situation is detected). A single transaction can be waiting to
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acquire at most one lock at a time.
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</para>
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<para>
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@ -4253,6 +4261,13 @@
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<structfield>procpid</structfield> column of the
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<structname>pg_stat_activity</structname> view to get more
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information on the session holding or waiting to hold the lock.
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Also, if you are using prepared transactions, the
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<structfield>transaction</> column can be joined to the
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<structfield>transaction</structfield> column of the
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<structname>pg_prepared_xacts</structname> view to get more
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information on prepared transactions that hold locks.
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(A prepared transaction can never be waiting for a lock,
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but it continues to hold the locks it acquired while running.)
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</para>
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</sect1>
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@ -4306,6 +4321,14 @@
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Global transaction identifier that was assigned to the transaction
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</entry>
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</row>
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<row>
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<entry><structfield>prepared</structfield></entry>
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<entry><type>timestamp with time zone</type></entry>
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<entry></entry>
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<entry>
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Time at which the transaction was prepared for commit
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</entry>
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</row>
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<row>
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<entry><structfield>owner</structfield></entry>
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<entry><type>name</type></entry>
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.2 2005/06/18 05:21:09 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.3 2005/06/18 19:33:41 tgl Exp $
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*
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* NOTES
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* Each global transaction is associated with a global transaction
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@ -104,6 +104,7 @@ int max_prepared_xacts = 50;
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typedef struct GlobalTransactionData
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{
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PGPROC proc; /* dummy proc */
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TimestampTz prepared_at; /* time of preparation */
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AclId owner; /* ID of user that executed the xact */
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TransactionId locking_xid; /* top-level XID of backend working on xact */
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bool valid; /* TRUE if fully prepared */
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@ -202,7 +203,8 @@ TwoPhaseShmemInit(void)
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* assuming that we can use very much backend context.
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*/
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GlobalTransaction
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MarkAsPreparing(TransactionId xid, Oid databaseid, char *gid, AclId owner)
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MarkAsPreparing(TransactionId xid, const char *gid,
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TimestampTz prepared_at, AclId owner, Oid databaseid)
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{
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GlobalTransaction gxact;
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int i;
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@ -278,6 +280,7 @@ MarkAsPreparing(TransactionId xid, Oid databaseid, char *gid, AclId owner)
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gxact->proc.subxids.overflowed = false;
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gxact->proc.subxids.nxids = 0;
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gxact->prepared_at = prepared_at;
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gxact->owner = owner;
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gxact->locking_xid = xid;
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gxact->valid = false;
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@ -342,7 +345,7 @@ MarkAsPrepared(GlobalTransaction gxact)
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* Locate the prepared transaction and mark it busy for COMMIT or PREPARE.
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*/
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static GlobalTransaction
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LockGXact(char *gid, AclId user)
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LockGXact(const char *gid, AclId user)
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{
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int i;
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@ -509,14 +512,16 @@ pg_prepared_xact(PG_FUNCTION_ARGS)
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/* build tupdesc for result tuples */
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/* this had better match pg_prepared_xacts view in system_views.sql */
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tupdesc = CreateTemplateTupleDesc(4, false);
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tupdesc = CreateTemplateTupleDesc(5, false);
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TupleDescInitEntry(tupdesc, (AttrNumber) 1, "transaction",
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XIDOID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 2, "gid",
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TEXTOID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 3, "ownerid",
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TupleDescInitEntry(tupdesc, (AttrNumber) 3, "prepared",
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TIMESTAMPTZOID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 4, "ownerid",
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INT4OID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 4, "dbid",
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TupleDescInitEntry(tupdesc, (AttrNumber) 5, "dbid",
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OIDOID, -1, 0);
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funcctx->tuple_desc = BlessTupleDesc(tupdesc);
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@ -540,8 +545,8 @@ pg_prepared_xact(PG_FUNCTION_ARGS)
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while (status->array != NULL && status->currIdx < status->ngxacts)
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{
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GlobalTransaction gxact = &status->array[status->currIdx++];
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Datum values[4];
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bool nulls[4];
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Datum values[5];
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bool nulls[5];
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HeapTuple tuple;
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Datum result;
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@ -556,8 +561,9 @@ pg_prepared_xact(PG_FUNCTION_ARGS)
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values[0] = TransactionIdGetDatum(gxact->proc.xid);
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values[1] = DirectFunctionCall1(textin, CStringGetDatum(gxact->gid));
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values[2] = Int32GetDatum(gxact->owner);
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values[3] = ObjectIdGetDatum(gxact->proc.databaseId);
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values[2] = TimestampTzGetDatum(gxact->prepared_at);
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values[3] = Int32GetDatum(gxact->owner);
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values[4] = ObjectIdGetDatum(gxact->proc.databaseId);
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tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls);
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result = HeapTupleGetDatum(tuple);
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@ -636,7 +642,7 @@ TwoPhaseGetDummyProc(TransactionId xid)
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/*
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* Header for a 2PC state file
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*/
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#define TWOPHASE_MAGIC 0x57F94530 /* format identifier */
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#define TWOPHASE_MAGIC 0x57F94531 /* format identifier */
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typedef struct TwoPhaseFileHeader
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{
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@ -644,6 +650,7 @@ typedef struct TwoPhaseFileHeader
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uint32 total_len; /* actual file length */
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TransactionId xid; /* original transaction XID */
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Oid database; /* OID of database it was in */
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TimestampTz prepared_at; /* time of preparation */
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AclId owner; /* user running the transaction */
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int32 nsubxacts; /* number of following subxact XIDs */
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int32 ncommitrels; /* number of delete-on-commit rels */
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@ -741,8 +748,9 @@ StartPrepare(GlobalTransaction gxact)
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hdr.magic = TWOPHASE_MAGIC;
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hdr.total_len = 0; /* EndPrepare will fill this in */
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hdr.xid = xid;
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hdr.database = MyDatabaseId;
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hdr.owner = GetUserId();
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hdr.database = gxact->proc.databaseId;
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hdr.prepared_at = gxact->prepared_at;
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hdr.owner = gxact->owner;
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hdr.nsubxacts = xactGetCommittedChildren(&children);
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hdr.ncommitrels = smgrGetPendingDeletes(true, &commitrels);
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hdr.nabortrels = smgrGetPendingDeletes(false, &abortrels);
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@ -1046,7 +1054,7 @@ ReadTwoPhaseFile(TransactionId xid)
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* FinishPreparedTransaction: execute COMMIT PREPARED or ROLLBACK PREPARED
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*/
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void
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FinishPreparedTransaction(char *gid, bool isCommit)
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FinishPreparedTransaction(const char *gid, bool isCommit)
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{
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GlobalTransaction gxact;
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TransactionId xid;
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@ -1474,7 +1482,10 @@ RecoverPreparedTransactions(void)
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/*
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* Reconstruct subtrans state for the transaction --- needed
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* because pg_subtrans is not preserved over a restart
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* because pg_subtrans is not preserved over a restart. Note
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* that we are linking all the subtransactions directly to the
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* top-level XID; there may originally have been a more complex
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* hierarchy, but there's no need to restore that exactly.
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*/
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for (i = 0; i < hdr->nsubxacts; i++)
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SubTransSetParent(subxids[i], xid);
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@ -1482,7 +1493,9 @@ RecoverPreparedTransactions(void)
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/*
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* Recreate its GXACT and dummy PGPROC
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*/
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gxact = MarkAsPreparing(xid, hdr->database, hdr->gid, hdr->owner);
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gxact = MarkAsPreparing(xid, hdr->gid,
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hdr->prepared_at,
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hdr->owner, hdr->database);
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GXactLoadSubxactData(gxact, hdr->nsubxacts, subxids);
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MarkAsPrepared(gxact);
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.205 2005/06/17 22:32:42 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.206 2005/06/18 19:33:41 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -1630,6 +1630,9 @@ PrepareTransaction(void)
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TransactionState s = CurrentTransactionState;
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TransactionId xid = GetCurrentTransactionId();
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GlobalTransaction gxact;
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TimestampTz prepared_at;
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AbsoluteTime PreparedSec; /* integer part */
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int PreparedUSec; /* microsecond part */
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ShowTransactionState("PrepareTransaction");
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@ -1692,6 +1695,9 @@ PrepareTransaction(void)
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*/
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s->state = TRANS_PREPARE;
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PreparedSec = GetCurrentAbsoluteTimeUsec(&PreparedUSec);
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prepared_at = AbsoluteTimeUsecToTimestampTz(PreparedSec, PreparedUSec);
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/* Tell bufmgr and smgr to prepare for commit */
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BufmgrCommit();
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@ -1699,7 +1705,8 @@ PrepareTransaction(void)
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* Reserve the GID for this transaction. This could fail if the
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* requested GID is invalid or already in use.
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*/
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gxact = MarkAsPreparing(xid, MyDatabaseId, prepareGID, GetUserId());
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gxact = MarkAsPreparing(xid, prepareGID, prepared_at,
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GetUserId(), MyDatabaseId);
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prepareGID = NULL;
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/*
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@ -3,7 +3,7 @@
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*
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* Copyright (c) 1996-2005, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.14 2005/06/17 22:32:43 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.15 2005/06/18 19:33:42 tgl Exp $
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*/
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CREATE VIEW pg_user AS
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@ -106,15 +106,16 @@ CREATE VIEW pg_locks AS
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SELECT *
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FROM pg_lock_status() AS L
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(locktype text, database oid, relation oid, page int4, tuple int2,
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transaction xid, classid oid, objid oid, objsubid int2,
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pid int4, mode text, granted boolean);
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transactionid xid, classid oid, objid oid, objsubid int2,
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transaction xid, pid int4, mode text, granted boolean);
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CREATE VIEW pg_prepared_xacts AS
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SELECT P.transaction, P.gid, U.usename AS owner, D.datname AS database
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SELECT P.transaction, P.gid, P.prepared,
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U.usename AS owner, D.datname AS database
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FROM pg_prepared_xact() AS P
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(transaction xid, gid text, ownerid int4, dbid oid)
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LEFT JOIN pg_database D ON P.dbid = D.oid
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LEFT JOIN pg_shadow U ON P.ownerid = U.usesysid;
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(transaction xid, gid text, prepared timestamptz, ownerid int4, dbid oid)
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LEFT JOIN pg_shadow U ON P.ownerid = U.usesysid
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LEFT JOIN pg_database D ON P.dbid = D.oid;
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CREATE VIEW pg_settings AS
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SELECT *
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@ -6,7 +6,7 @@
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* Copyright (c) 2002-2005, PostgreSQL Global Development Group
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*
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* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/utils/adt/lockfuncs.c,v 1.18 2005/05/17 21:46:10 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/lockfuncs.c,v 1.19 2005/06/18 19:33:42 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -26,7 +26,7 @@ static const char * const LockTagTypeNames[] = {
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"extend",
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"page",
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"tuple",
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"transaction",
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"transactionid",
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"object",
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"userlock"
|
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};
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@ -64,7 +64,7 @@ pg_lock_status(PG_FUNCTION_ARGS)
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/* build tupdesc for result tuples */
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/* this had better match pg_locks view in system_views.sql */
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tupdesc = CreateTemplateTupleDesc(12, false);
|
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tupdesc = CreateTemplateTupleDesc(13, false);
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TupleDescInitEntry(tupdesc, (AttrNumber) 1, "locktype",
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TEXTOID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 2, "database",
|
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@ -75,7 +75,7 @@ pg_lock_status(PG_FUNCTION_ARGS)
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INT4OID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 5, "tuple",
|
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INT2OID, -1, 0);
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 6, "transaction",
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TupleDescInitEntry(tupdesc, (AttrNumber) 6, "transactionid",
|
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XIDOID, -1, 0);
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TupleDescInitEntry(tupdesc, (AttrNumber) 7, "classid",
|
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OIDOID, -1, 0);
|
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@ -83,11 +83,13 @@ pg_lock_status(PG_FUNCTION_ARGS)
|
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OIDOID, -1, 0);
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 9, "objsubid",
|
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INT2OID, -1, 0);
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 10, "pid",
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 10, "transaction",
|
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XIDOID, -1, 0);
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 11, "pid",
|
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INT4OID, -1, 0);
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 11, "mode",
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 12, "mode",
|
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TEXTOID, -1, 0);
|
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TupleDescInitEntry(tupdesc, (AttrNumber) 12, "granted",
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TupleDescInitEntry(tupdesc, (AttrNumber) 13, "granted",
|
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BOOLOID, -1, 0);
|
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|
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funcctx->tuple_desc = BlessTupleDesc(tupdesc);
|
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@ -118,8 +120,8 @@ pg_lock_status(PG_FUNCTION_ARGS)
|
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LOCKMODE mode = 0;
|
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const char *locktypename;
|
||||
char tnbuf[32];
|
||||
Datum values[12];
|
||||
char nulls[12];
|
||||
Datum values[13];
|
||||
char nulls[13];
|
||||
HeapTuple tuple;
|
||||
Datum result;
|
||||
|
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@ -249,10 +251,14 @@ pg_lock_status(PG_FUNCTION_ARGS)
|
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break;
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}
|
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|
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values[9] = Int32GetDatum(proc->pid);
|
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values[10] = DirectFunctionCall1(textin,
|
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values[9] = TransactionIdGetDatum(proc->xid);
|
||||
if (proc->pid != 0)
|
||||
values[10] = Int32GetDatum(proc->pid);
|
||||
else
|
||||
nulls[10] = 'n';
|
||||
values[11] = DirectFunctionCall1(textin,
|
||||
CStringGetDatum(GetLockmodeName(mode)));
|
||||
values[11] = BoolGetDatum(granted);
|
||||
values[12] = BoolGetDatum(granted);
|
||||
|
||||
tuple = heap_formtuple(funcctx->tuple_desc, values, nulls);
|
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result = HeapTupleGetDatum(tuple);
|
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|
||||
@ -7,7 +7,7 @@
|
||||
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/access/twophase.h,v 1.1 2005/06/17 22:32:48 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/include/access/twophase.h,v 1.2 2005/06/18 19:33:42 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
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||||
*/
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||||
@ -15,6 +15,7 @@
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||||
#define TWOPHASE_H
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||||
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||||
#include "storage/lock.h"
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||||
#include "utils/timestamp.h"
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||||
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||||
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||||
/*
|
||||
@ -31,8 +32,9 @@ extern void TwoPhaseShmemInit(void);
|
||||
|
||||
extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid);
|
||||
|
||||
extern GlobalTransaction MarkAsPreparing(TransactionId xid, Oid databaseid,
|
||||
char *gid, AclId owner);
|
||||
extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
|
||||
TimestampTz prepared_at,
|
||||
AclId owner, Oid databaseid);
|
||||
extern void MarkAsPrepared(GlobalTransaction gxact);
|
||||
|
||||
extern void StartPrepare(GlobalTransaction gxact);
|
||||
@ -44,6 +46,6 @@ extern void RecoverPreparedTransactions(void);
|
||||
extern void RecreateTwoPhaseFile(TransactionId xid, void *content, int len);
|
||||
extern void RemoveTwoPhaseFile(TransactionId xid, bool giveWarning);
|
||||
|
||||
extern void FinishPreparedTransaction(char *gid, bool isCommit);
|
||||
extern void FinishPreparedTransaction(const char *gid, bool isCommit);
|
||||
|
||||
#endif /* TWOPHASE_H */
|
||||
|
||||
@ -37,7 +37,7 @@
|
||||
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.277 2005/06/17 22:32:48 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.278 2005/06/18 19:33:42 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -53,6 +53,6 @@
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 200506171
|
||||
#define CATALOG_VERSION_NO 200506181
|
||||
|
||||
#endif
|
||||
|
||||
@ -1278,8 +1278,8 @@ SELECT viewname, definition FROM pg_views WHERE schemaname <> 'information_schem
|
||||
--------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||||
iexit | SELECT ih.name, ih.thepath, interpt_pp(ih.thepath, r.thepath) AS exit FROM ihighway ih, ramp r WHERE (ih.thepath ## r.thepath);
|
||||
pg_indexes | SELECT n.nspname AS schemaname, c.relname AS tablename, i.relname AS indexname, t.spcname AS "tablespace", pg_get_indexdef(i.oid) AS indexdef FROM ((((pg_index x JOIN pg_class c ON ((c.oid = x.indrelid))) JOIN pg_class i ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) LEFT JOIN pg_tablespace t ON ((t.oid = i.reltablespace))) WHERE ((c.relkind = 'r'::"char") AND (i.relkind = 'i'::"char"));
|
||||
pg_locks | SELECT l.locktype, l."database", l.relation, l.page, l.tuple, l."transaction", l.classid, l.objid, l.objsubid, l.pid, l."mode", l.granted FROM pg_lock_status() l(locktype text, "database" oid, relation oid, page integer, tuple smallint, "transaction" xid, classid oid, objid oid, objsubid smallint, pid integer, "mode" text, granted boolean);
|
||||
pg_prepared_xacts | SELECT p."transaction", p.gid, u.usename AS "owner", d.datname AS "database" FROM ((pg_prepared_xact() p("transaction" xid, gid text, ownerid integer, dbid oid) LEFT JOIN pg_database d ON ((p.dbid = d.oid))) LEFT JOIN pg_shadow u ON ((p.ownerid = u.usesysid)));
|
||||
pg_locks | SELECT l.locktype, l."database", l.relation, l.page, l.tuple, l.transactionid, l.classid, l.objid, l.objsubid, l."transaction", l.pid, l."mode", l.granted FROM pg_lock_status() l(locktype text, "database" oid, relation oid, page integer, tuple smallint, transactionid xid, classid oid, objid oid, objsubid smallint, "transaction" xid, pid integer, "mode" text, granted boolean);
|
||||
pg_prepared_xacts | SELECT p."transaction", p.gid, p."prepared", u.usename AS "owner", d.datname AS "database" FROM ((pg_prepared_xact() p("transaction" xid, gid text, "prepared" timestamp with time zone, ownerid integer, dbid oid) LEFT JOIN pg_shadow u ON ((p.ownerid = u.usesysid))) LEFT JOIN pg_database d ON ((p.dbid = d.oid)));
|
||||
pg_rules | SELECT n.nspname AS schemaname, c.relname AS tablename, r.rulename, pg_get_ruledef(r.oid) AS definition FROM ((pg_rewrite r JOIN pg_class c ON ((c.oid = r.ev_class))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (r.rulename <> '_RETURN'::name);
|
||||
pg_settings | SELECT a.name, a.setting, a.category, a.short_desc, a.extra_desc, a.context, a.vartype, a.source, a.min_val, a.max_val FROM pg_show_all_settings() a(name text, setting text, category text, short_desc text, extra_desc text, context text, vartype text, source text, min_val text, max_val text);
|
||||
pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.usename, pg_stat_get_backend_activity(s.backendid) AS current_query, pg_stat_get_backend_activity_start(s.backendid) AS query_start, pg_stat_get_backend_start(s.backendid) AS backend_start, pg_stat_get_backend_client_addr(s.backendid) AS client_addr, pg_stat_get_backend_client_port(s.backendid) AS client_port FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_shadow u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.usesysid));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user