From: drh <drh@noemail.net>
Date: Wed, 9 Jan 2002 13:30:41 +0000 (+0000)
Subject: Continued work on the DROP/CREATE problem. (CVS 343)
X-Git-Tag: version-3.6.10~5683
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d229ca9406ed71f4c3b33ff6f4cdc50ce589c5da;p=thirdparty%2Fsqlite.git

Continued work on the DROP/CREATE problem. (CVS 343)

FossilOrigin-Name: 0a3aa99e11ec9803cea646092bc21676e75a6670
---

diff --git a/manifest b/manifest
index ae21b2f2ba..2f0ede7246 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Working\son\sa\sbug:\sDropping\sand\srecreating\sa\stable\swithin\sa\stransaction\ncauses\san\sassertion\sfailure.\s(CVS\s342)
-D 2002-01-09T03:19:59
+C Continued\swork\son\sthe\sDROP/CREATE\sproblem.\s(CVS\s343)
+D 2002-01-09T13:30:41
 F Makefile.in 9fa4277413bf1d9cf91365f07d4108d7d87ed2af
 F Makefile.template c88ffcb9c339e718f434d0c7f045bcd7eea125af
 F README a4c0ba11354ef6ba0776b400d057c59da47a4cc0
@@ -21,7 +21,7 @@ F sqlite.1 2e2bb0529ef468ade9e4322bd609d0695fb9ded9
 F src/TODO af7f3cab0228e34149cf98e073aa83d45878e7e6
 F src/btree.c c796e387da340cb628dc1e41f684fc20253f561e
 F src/btree.h 9ead7f54c270d8a554e59352ca7318fdaf411390
-F src/build.c 66195e45353b1c56ee12ba74a5743cb7a487f65e
+F src/build.c 1acab23d8d5ef447e16c2b270262fcb18d6c0d90
 F src/delete.c f7690efc09ad6a2f1f3f0490e1b0cbb676bb95cf
 F src/expr.c 8169261ac56e96c860407a8773ca10b779e32328
 F src/hash.c 838a6f2af547dfdc5ff2b438e8f981ea4b74f224
@@ -89,7 +89,7 @@ F test/tableapi.test 51d0c209aa6b1158cb952ec917c656d4ce66e9e4
 F test/tclsqlite.test feca0f2b23ba51d202d67d71e10ba7a8a1621f82
 F test/temptable.test 37acd9e39781c2ff7cff2ba741b6b27ce020a44a
 F test/tester.tcl 96db1b49157388edb57e11bf33285e3811a897e4
-F test/trans.test 5f8543d3df10600b36732ebed5b46030073913a1
+F test/trans.test 9306ee5e47e36d0c99185ab33326f988567a868d
 F test/unique.test 07776624b82221a80c8b4138ce0dd8b0853bb3ea
 F test/update.test 3cf1ca0565f678063c2dfa9a7948d2d66ae1a778
 F test/vacuum.test 8acf8669f3b627e54149b25165b034aa06c2432e
@@ -119,7 +119,7 @@ F www/speed.tcl 83457b2bf6bb430900bd48ca3dd98264d9a916a5
 F www/sqlite.tcl 8b5884354cb615049aed83039f8dfe1552a44279
 F www/tclsqlite.tcl 880ef67cb4f2797b95bf1368fc4e0d8ca0fda956
 F www/vdbe.tcl 2013852c27a02a091d39a766bc87cff329f21218
-P 7deb62241300ff23af5a78dd855f0f69e5f16ffd
-R 4f050fe6f09f01448c2bd7cd3c521994
+P b3656a5cfef91c89de2cbb9790087d0d53c03e6f
+R 03b35c15e5406e6d492b56b49630910a
 U drh
-Z 333823479478d2952c0013142638bffb
+Z b941f9b4d1245f388980c0232066edd8
diff --git a/manifest.uuid b/manifest.uuid
index abaa464520..7f5c23b290 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-b3656a5cfef91c89de2cbb9790087d0d53c03e6f
\ No newline at end of file
+0a3aa99e11ec9803cea646092bc21676e75a6670
\ No newline at end of file
diff --git a/src/build.c b/src/build.c
index bb8f3053ba..d6bd5d653b 100644
--- a/src/build.c
+++ b/src/build.c
@@ -25,7 +25,7 @@
 **     ROLLBACK
 **     PRAGMA
 **
-** $Id: build.c,v 1.62 2002/01/09 03:20:00 drh Exp $
+** $Id: build.c,v 1.63 2002/01/09 13:30:41 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -163,17 +163,18 @@ Index *sqliteFindIndex(sqlite *db, char *zName){
 ** Remove the given index from the index hash table, and free
 ** its memory structures.
 **
-** The index is removed from the database hash tables if db!=NULL.
-** But the index is not unlinked from the Table that it indexes.
+** The index is removed from the database hash tables but
+** it is not unlinked from the Table that it indexes.
 ** Unlinking from the Table must be done by the calling function.
 */
 static void sqliteDeleteIndex(sqlite *db, Index *p){
-  if( p->zName && db ){
-    Index *pOld;
-    pOld = sqliteHashInsert(&db->idxHash, p->zName, strlen(p->zName)+1, 0);
-    assert( pOld==0 || pOld==p );
-    sqliteHashInsert(&db->idxDrop, p, 0, 0);
+  Index *pOld;
+  assert( db!=0 && p->zName!=0 );
+  pOld = sqliteHashInsert(&db->idxHash, p->zName, strlen(p->zName)+1, 0);
+  if( pOld!=0 && pOld!=p ){
+    sqliteHashInsert(&db->idxHash, pOld->zName, strlen(pOld->zName)+1, pOld);
   }
+  sqliteHashInsert(&db->idxDrop, p, 0, 0);
   sqliteFree(p);
 }
 
@@ -210,7 +211,9 @@ void sqlitePendingDropIndex(sqlite *db, Index *p){
   }else{
     Index *pOld;
     pOld = sqliteHashInsert(&db->idxHash, p->zName, strlen(p->zName)+1, 0);
-    assert( pOld==p );
+    if( pOld!=0 && pOld!=p ){
+      sqliteHashInsert(&db->idxHash, pOld->zName, strlen(pOld->zName)+1, pOld);
+    }
     sqliteHashInsert(&db->idxDrop, p, 0, p);
     p->isDropped = 1;
   }
@@ -252,12 +255,11 @@ void sqliteDeleteTable(sqlite *db, Table *pTable){
 ** table structure with all its indices.
 */
 static void sqliteUnlinkAndDeleteTable(sqlite *db, Table *p){
-  if( p->zName && db ){
-    Table *pOld;
-    pOld = sqliteHashInsert(&db->tblHash, p->zName, strlen(p->zName)+1, 0);
-    assert( pOld==0 || pOld==p );
-    sqliteHashInsert(&db->tblDrop, p, 0, 0);
-  }
+  Table *pOld;
+  assert( db!=0 );
+  pOld = sqliteHashInsert(&db->tblHash, p->zName, strlen(p->zName)+1, 0);
+  assert( pOld==0 || pOld==p );
+  sqliteHashInsert(&db->tblDrop, p, 0, 0);
   sqliteDeleteTable(db, p);
 }
 
diff --git a/test/trans.test b/test/trans.test
index ae0a4808f7..51f3b253ad 100644
--- a/test/trans.test
+++ b/test/trans.test
@@ -11,7 +11,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this script is database locks.
 #
-# $Id: trans.test,v 1.8 2002/01/09 03:20:00 drh Exp $
+# $Id: trans.test,v 1.9 2002/01/09 13:30:42 drh Exp $
 
 
 set testdir [file dirname $argv0]
@@ -468,7 +468,68 @@ do_test trans-6.7 {
   }
 } {1 {no such table: t1}}
 
-do_test trans-6.8 {
+# Repeat on a table with an automatically generated index.
+#
+do_test trans-6.10 {
+  execsql2 {
+    CREATE TABLE t1(a unique,b,c);
+    INSERT INTO t1 VALUES(1,2,3);
+    BEGIN TRANSACTION;
+    DROP TABLE t1;
+    CREATE TABLE t1(p unique,q,r);
+    ROLLBACK;
+    SELECT * FROM t1;
+  }
+} {a 1 b 2 c 3}
+do_test trans-6.11 {
+  execsql2 {
+    BEGIN TRANSACTION;
+    DROP TABLE t1;
+    CREATE TABLE t1(p unique,q,r);
+    COMMIT;
+    SELECT * FROM t1;
+  }
+} {}
+do_test trans-6.12 {
+  execsql2 {
+    INSERT INTO t1 VALUES(1,2,3);
+    SELECT * FROM t1;
+  }
+} {p 1 q 2 r 3}
+do_test trans-6.13 {
+  execsql2 {
+    BEGIN TRANSACTION;
+    DROP TABLE t1;
+    CREATE TABLE t1(a unique,b,c);
+    INSERT INTO t1 VALUES(4,5,6);
+    SELECT * FROM t1;
+    DROP TABLE t1;
+  }
+} {a 4 b 5 c 6}
+do_test trans-6.14 {
+  execsql2 {
+    ROLLBACK;
+    SELECT * FROM t1;
+  }
+} {p 1 q 2 r 3}
+do_test trans-6.15 {
+  execsql2 {
+    BEGIN TRANSACTION;
+    DROP TABLE t1;
+    CREATE TABLE t1(a unique,b,c);
+    INSERT INTO t1 VALUES(4,5,6);
+    SELECT * FROM t1;
+    DROP TABLE t1;
+  }
+} {a 4 b 5 c 6}
+do_test trans-6.16 {
+  catchsql {
+    COMMIT;
+    SELECT * FROM t1;
+  }
+} {1 {no such table: t1}}
+
+do_test trans-6.20 {
   execsql {
     CREATE TABLE t1(a integer primary key,b,c);
     INSERT INTO t1 VALUES(1,-2,-3);
@@ -476,13 +537,13 @@ do_test trans-6.8 {
     SELECT * FROM t1;
   }
 } {1 -2 -3 4 -5 -6}
-do_test trans-6.9 {
+do_test trans-6.21 {
   execsql {
     CREATE INDEX i1 ON t1(b);
     SELECT * FROM t1 WHERE b<1;
   }
 } {4 -5 -6 1 -2 -3}
-do_test trans-6.10 {
+do_test trans-6.22 {
   execsql {
     BEGIN TRANSACTION;
     DROP INDEX i1;
@@ -490,12 +551,12 @@ do_test trans-6.10 {
     ROLLBACK;
   }
 } {1 -2 -3 4 -5 -6}
-do_test trans-6.11 {
+do_test trans-6.23 {
   execsql {
     SELECT * FROM t1 WHERE b<1;
   }
 } {4 -5 -6 1 -2 -3}
-do_test trans-6.12 {
+do_test trans-6.24 {
   execsql {
     BEGIN TRANSACTION;
     DROP TABLE t1;
@@ -504,7 +565,7 @@ do_test trans-6.12 {
   }
 } {4 -5 -6 1 -2 -3}
 
-do_test trans-6.13 {
+do_test trans-6.25 {
   execsql {
     BEGIN TRANSACTION;
     DROP INDEX i1;
@@ -512,23 +573,89 @@ do_test trans-6.13 {
     SELECT * FROM t1 WHERE b<1;
   }
 } {1 -2 -3 4 -5 -6}
-do_test trans-6.14 {
+do_test trans-6.26 {
   execsql {
     SELECT * FROM t1 WHERE c<1;
   }
 } {4 -5 -6 1 -2 -3}
-do_test trans-6.15 {
+do_test trans-6.27 {
   execsql {
     ROLLBACK;
     SELECT * FROM t1 WHERE b<1;
   }
 } {4 -5 -6 1 -2 -3}
-do_test trans-6.16 {
+do_test trans-6.28 {
   execsql {
     SELECT * FROM t1 WHERE c<1;
   }
 } {1 -2 -3 4 -5 -6}
 
+# The following repeats steps 6.20 through 6.28, but puts a "unique"
+# constraint the first field of the table in order to generate an
+# automatic index.
+#
+do_test trans-6.30 {
+  execsql {
+    BEGIN TRANSACTION;
+    DROP TABLE t1;
+    CREATE TABLE t1(a int unique,b,c);
+    COMMIT;
+    INSERT INTO t1 VALUES(1,-2,-3);
+    INSERT INTO t1 VALUES(4,-5,-6);
+    SELECT * FROM t1 ORDER BY a;
+  }
+} {1 -2 -3 4 -5 -6}
+do_test trans-6.31 {
+  execsql {
+    CREATE INDEX i1 ON t1(b);
+    SELECT * FROM t1 WHERE b<1;
+  }
+} {4 -5 -6 1 -2 -3}
+do_test trans-6.32 {
+  execsql {
+    BEGIN TRANSACTION;
+    DROP INDEX i1;
+    SELECT * FROM t1 WHERE b<1;
+    ROLLBACK;
+  }
+} {1 -2 -3 4 -5 -6}
+do_test trans-6.33 {
+  execsql {
+    SELECT * FROM t1 WHERE b<1;
+  }
+} {4 -5 -6 1 -2 -3}
+do_test trans-6.34 {
+  execsql {
+    BEGIN TRANSACTION;
+    DROP TABLE t1;
+    ROLLBACK;
+    SELECT * FROM t1 WHERE b<1;
+  }
+} {4 -5 -6 1 -2 -3}
 
+do_test trans-6.35 {
+  execsql {
+    BEGIN TRANSACTION;
+    DROP INDEX i1;
+    CREATE INDEX i1 ON t1(c);
+    SELECT * FROM t1 WHERE b<1;
+  }
+} {1 -2 -3 4 -5 -6}
+do_test trans-6.36 {
+  execsql {
+    SELECT * FROM t1 WHERE c<1;
+  }
+} {4 -5 -6 1 -2 -3}
+do_test trans-6.36 {
+  execsql {
+    ROLLBACK;
+    SELECT * FROM t1 WHERE b<1;
+  }
+} {4 -5 -6 1 -2 -3}
+do_test trans-6.38 {
+  execsql {
+    SELECT * FROM t1 WHERE c<1;
+  }
+} {1 -2 -3 4 -5 -6}
 
 finish_test