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Measure the current transaction time to milliseconds.

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Define a new function, GetCurrentTransactionStartTimeUsec() to get the time
 to this precision.
Allow now() and timestamp 'now' to use this higher precision result so
 we now have fractional seconds in this "constant".
Add timestamp without time zone type.
Move previous timestamp type to timestamp with time zone.
Accept another ISO variant for date/time values: yyyy-mm-ddThh:mm:ss
 (note the "T" separating the day from hours information).
Remove 'current' from date/time types; convert to 'now' in input.
Separate time and timetz regression tests.
Separate timestamp and timestamptz regression test.
This commit is contained in:
Thomas G. Lockhart
2001-09-28 08:09:14 +00:00
parent 1f075a32ee
commit 6f58115ddd
27 changed files with 2778 additions and 1873 deletions
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5
src/include/access/xact.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: xact.h,v 1.36 2001/08/26 16:56:00 tgl Exp $
* $Id: xact.h,v 1.37 2001/09/28 08:09:12 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -17,6 +17,7 @@
#include "access/transam.h"
#include "access/xlog.h"
#include "utils/nabstime.h"
#include "utils/timestamp.h"
/*
* Xact isolation levels
@@ -39,6 +40,7 @@ typedef struct TransactionStateData
CommandId commandId;
CommandId scanCommandId;
AbsoluteTime startTime;
int startTimeMsec;
int state;
int blockState;
} TransactionStateData;
@@ -104,6 +106,7 @@ extern CommandId GetCurrentCommandId(void);
extern CommandId GetScanCommandId(void);
extern void SetScanCommandId(CommandId);
extern AbsoluteTime GetCurrentTransactionStartTime(void);
extern AbsoluteTime GetCurrentTransactionStartTimeUsec(int *usec);
extern bool TransactionIdIsCurrentTransactionId(TransactionId xid);
extern bool CommandIdIsCurrentCommandId(CommandId cid);
extern bool CommandIdGEScanCommandId(CommandId cid);