From f11c34df74582004f56e710791b2d7e40081ca54 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Fri, 8 Sep 2006 12:27:36 +0000
Subject: [PATCH] Bug fix in date/time computations.  Ticket #1964. Some
 unrelated comment typos are also fixed and got accidently checked in at the
 same time. (CVS 3396)

FossilOrigin-Name: c81eaa0dc9a327d222e066076c4a2da5e69d8c21
---
 manifest       | 16 ++++++++--------
 manifest.uuid  |  2 +-
 src/alter.c    |  8 ++++----
 src/date.c     |  7 ++++---
 test/date.test |  7 ++++---
 5 files changed, 21 insertions(+), 19 deletions(-)

diff --git a/manifest b/manifest
index 253e4df573..431b85fd3d 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improvements\sto\sthe\sdocumentation\sof\sthe\sreturn\scodes\sfor\ssqlite3_step().\nTickets\s#1633,\s#1366,\s#1178,\s#906,\sand\sprobably\sothers\stoo.\s(CVS\s3395)
-D 2006-09-08T11:56:30
+C Bug\sfix\sin\sdate/time\scomputations.\s\sTicket\s#1964.\r\nSome\sunrelated\scomment\stypos\sare\salso\sfixed\sand\sgot\saccidently\r\nchecked\sin\sat\sthe\ssame\stime.\s(CVS\s3396)
+D 2006-09-08T12:27:37
 F Makefile.in cabd42d34340f49260bc2a7668c38eba8d4cfd99
 F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -44,7 +44,7 @@ F sqlite.pc.in 30552343140c53304c2a658c080fbe810cd09ca2
 F sqlite3.1 6be1ad09113570e1fc8dcaff84c9b0b337db5ffc
 F sqlite3.def a96c1d0d39362b763d2ddba220a32da41a15c4b4
 F sqlite3.pc.in 985b9bf34192a549d7d370e0f0b6b34a4f61369a
-F src/alter.c eba661e77bfd00282fbfa316cdb6aef04856fedc
+F src/alter.c 2c79ec40f65e33deaf90ca493422c74586e481a3
 F src/analyze.c 7d2b7ab9a9c2fd6e55700f69064dfdd3e36d7a8a
 F src/attach.c b11eb4d5d3fb99a10a626956bccc7215f6b68b16
 F src/auth.c 902f4722661c796b97f007d9606bd7529c02597f
@@ -53,7 +53,7 @@ F src/btree.h 061c50e37de7f50b58528e352d400cf33ead7418
 F src/build.c 4359b34a36938716ed10ac037eec9dc5173b8f4b
 F src/callback.c fd9bb39f7ff6b52bad8365617abc61c720640429
 F src/complete.c 7d1a44be8f37de125fcafd3d3a018690b3799675
-F src/date.c cd2bd5d1ebc6fa12d6312f69789ae5b0a2766f2e
+F src/date.c bbfc2db2b713193f08bc482c27961a801fce6671
 F src/delete.c 804384761144fe1a5035b99f4bd7d706976831bd
 F src/experimental.c 1b2d1a6cd62ecc39610e97670332ca073c50792b
 F src/expr.c 0546cc60f08c426d96092dea0789d085aed3580e
@@ -174,7 +174,7 @@ F test/corrupt.test 18c7a995b1af76a8c8600b996257f2c7b7bff083
 F test/corrupt2.test 88342570828f2b8cbbd8369eff3891f5c0bdd5ba
 F test/crash.test 5f5f155393c5685b3842fef79b6fbafa55197d75
 F test/crashtest1.c 09c1c7d728ccf4feb9e481671e29dda5669bbcc2
-F test/date.test fa6cc4e5fb79a207f77b66a51d2b3244ac76feae
+F test/date.test 0f39a64f8f05c269b8568a8cbf3855d49359d328
 F test/default.test 252298e42a680146b1dd64f563b95bdf088d94fb
 F test/delete.test 525a6953bc3978780cae35f3eaf1027cf4ce887d
 F test/delete2.test c06be3806ba804bc8c6f134476816080280b40e3
@@ -396,7 +396,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P b3eb1732bd529b14bef1872171a3c6429e209d31
-R e34c4ab5b751389f6c05ea187f495fb0
+P 508248e783dc1e3da3695b28467ca3b79629e582
+R db789daf8e27e8308536c276b6e1da10
 U drh
-Z f62f8cbf6340cbbbc58aed5f40a05996
+Z c96944e52a68f5437f07b5ef49e8020c
diff --git a/manifest.uuid b/manifest.uuid
index 3e0f444609..af8ed8de63 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-508248e783dc1e3da3695b28467ca3b79629e582
\ No newline at end of file
+c81eaa0dc9a327d222e066076c4a2da5e69d8c21
\ No newline at end of file
diff --git a/src/alter.c b/src/alter.c
index efab598ed8..128f3d6611 100644
--- a/src/alter.c
+++ b/src/alter.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that used to generate VDBE code
 ** that implements the ALTER TABLE command.
 **
-** $Id: alter.c,v 1.21 2006/06/21 12:36:25 danielk1977 Exp $
+** $Id: alter.c,v 1.22 2006/09/08 12:27:37 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -28,7 +28,7 @@
 ** This function is used by SQL generated to implement the 
 ** ALTER TABLE command. The first argument is the text of a CREATE TABLE or
 ** CREATE INDEX command. The second is a table name. The table name in 
-** the CREATE TABLE or CREATE INDEX statement is replaced with the second
+** the CREATE TABLE or CREATE INDEX statement is replaced with the third
 ** argument and the result returned. Examples:
 **
 ** sqlite_rename_table('CREATE TABLE abc(a, b, c)', 'def')
@@ -78,10 +78,10 @@ static void renameTableFunc(
 }
 
 #ifndef SQLITE_OMIT_TRIGGER
-/* This function is used by SQL generated to implement the ALTER TABLE
+/* This function is used by SQL generated to implement the
 ** ALTER TABLE command. The first argument is the text of a CREATE TRIGGER 
 ** statement. The second is a table name. The table name in the CREATE 
-** TRIGGER statement is replaced with the second argument and the result 
+** TRIGGER statement is replaced with the third argument and the result 
 ** returned. This is analagous to renameTableFunc() above, except for CREATE
 ** TRIGGER, not CREATE INDEX and CREATE TABLE.
 */
diff --git a/src/date.c b/src/date.c
index 8188f26090..1af6fa43fe 100644
--- a/src/date.c
+++ b/src/date.c
@@ -16,7 +16,7 @@
 ** sqlite3RegisterDateTimeFunctions() found at the bottom of the file.
 ** All other code has file scope.
 **
-** $Id: date.c,v 1.54 2006/01/31 20:49:13 drh Exp $
+** $Id: date.c,v 1.55 2006/09/08 12:27:37 drh Exp $
 **
 ** NOTES:
 **
@@ -234,11 +234,11 @@ static void computeJD(DateTime *p){
   X2 = 30.6001*(M+1);
   p->rJD = X1 + X2 + D + B - 1524.5;
   p->validJD = 1;
-  p->validYMD = 0;
   if( p->validHMS ){
     p->rJD += (p->h*3600.0 + p->m*60.0 + p->s)/86400.0;
     if( p->validTZ ){
       p->rJD -= p->tz*60/86400.0;
+      p->validYMD = 0;
       p->validHMS = 0;
       p->validTZ = 0;
     }
@@ -357,6 +357,7 @@ static void computeYMD(DateTime *p){
 static void computeHMS(DateTime *p){
   int Z, s;
   if( p->validHMS ) return;
+  computeJD(p);
   Z = p->rJD + 0.5;
   s = (p->rJD + 0.5 - Z)*86400000.0 + 0.5;
   p->s = 0.001*s;
@@ -581,7 +582,7 @@ static int parseModifier(const char *zMod, DateTime *p){
         if( z[0]=='-' ) tx.rJD = -tx.rJD;
         computeJD(p);
         clearYMD_HMS_TZ(p);
-       p->rJD += tx.rJD;
+        p->rJD += tx.rJD;
         rc = 0;
         break;
       }
diff --git a/test/date.test b/test/date.test
index 516ea67d26..d05722d164 100644
--- a/test/date.test
+++ b/test/date.test
@@ -11,7 +11,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this file is testing date and time functions.
 #
-# $Id: date.test,v 1.15 2006/09/01 15:49:06 drh Exp $
+# $Id: date.test,v 1.16 2006/09/08 12:27:37 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -273,7 +273,8 @@ datetest 11.9 {datetime('2004-02-28 20:00:00', '12:01')} \
    {2004-02-29 08:01:00}
 datetest 11.10 {datetime('2004-02-28 20:00:00', '12:60')} NULL
 
-
-
+# Ticket #1964
+datetest 12.1 {datetime('2005-09-01')} {2005-09-01 00:00:00}
+datetest 12.2 {datetime('2005-09-01','+0 hours')} {2005-09-01 00:00:00}
 
 finish_test