From: drh <drh@noemail.net>
Date: Thu, 29 Dec 2005 23:33:54 +0000 (+0000)
Subject: Add support for CREATE TABLE IF NOT EXISTS. (CVS 2847)
X-Git-Tag: version-3.6.10~3320
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=faa59554c38c568e13a3da5e1f5267e305218f24;p=thirdparty%2Fsqlite.git

Add support for CREATE TABLE IF NOT EXISTS. (CVS 2847)

FossilOrigin-Name: 0bd9e35fd22946640f4fb1c1874922ae096916f7
---

diff --git a/manifest b/manifest
index 326723b3fe..6b7f12ada9 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Bug\sfix\sin\scodec\sprocessing.\s(CVS\s2846)
-D 2005-12-29T23:04:02
+C Add\ssupport\sfor\sCREATE\sTABLE\sIF\sNOT\sEXISTS.\s(CVS\s2847)
+D 2005-12-29T23:33:54
 F Makefile.in e3c6b3a38d734d41574c04f2fc90d18de2b87102
 F Makefile.linux-gcc aee18d8a05546dcf1888bd4547e442008a49a092
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -36,7 +36,7 @@ F src/attach.c 07822dbd2dcf6de548aba6cb24142aec800fa3b6
 F src/auth.c 31e2304bef67f44d635655f44234387ea7d21454
 F src/btree.c 2b2651e0f6f9f8c5976b662fbfab7fc8f54f02c9
 F src/btree.h 8ff86378bb5af0cde282614c16bf0c0190b6d216
-F src/build.c 0982b00aeab443c1469ff83f54df4b383247ca92
+F src/build.c bb4c9df2583246728167659d401fd75aa3d9997f
 F src/callback.c 62066afd516f220575e81b1a1239ab92a2eae252
 F src/complete.c df1681cef40dec33a286006981845f87b194e7a4
 F src/date.c bb079317bff6a2b78aba5c0d2ddae5f6f03acfb7
@@ -61,7 +61,7 @@ F src/os_win.c 9feb97f49b93d451f8ef7c5dd388e05a44647dc6
 F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
 F src/pager.c 5227ea29acbea4b6a9c6f1dfd3e8493de5fc2a93
 F src/pager.h e0acb095b3ad0bca48f2ab00c87346665643f64f
-F src/parse.y 13343510907419ecd2fe72a245f9880df9a7dc20
+F src/parse.y fea607bdc0f4440e001ca277a49f507b5a3fb1e5
 F src/pragma.c 8883b4d34796efa315bdd0ec1b03f580ef1575b9
 F src/prepare.c 1f2bf83038792294ef4a307d95993f90e6c70561
 F src/printf.c f47a2f4b5387cd2ebb12e9117a1a5d6bd9a2b812
@@ -69,7 +69,7 @@ F src/random.c ff5e9a8cad790e2a51cd4d2e7737dc8540e09d1d
 F src/select.c 2292b065bc6be61e01aad39a2e1b93e332fb7e57
 F src/shell.c 66b073375efbdee19045e7e0cd38b85f9aff71da
 F src/sqlite.h.in 015e02efa9e8bafa31b6c270116369ddff4e9803
-F src/sqliteInt.h e3a49f17bd7cb6d3bf33d53d2fdb4e5d69c18e67
+F src/sqliteInt.h 3541350fd0617225a61c6ff4af5e6e9d33bc3794
 F src/table.c 486dcfce532685b53b5a2b5da8bba0ded6fb2316
 F src/tclsqlite.c ce481c0a21a20641cdfe87c9cbbb328cfb3a58b9
 F src/test1.c 4691cc7235683324791a0be560308ca338de36de
@@ -222,7 +222,7 @@ F test/sort.test 0e4456e729e5a92a625907c63dcdedfbe72c5dc5
 F test/subquery.test e6de53332c0301b3cfa34edc3f3cd5fa1e859efd
 F test/subselect.test 2d13fb7f450db3595adcdd24079a0dd1d2d6abc2
 F test/sync.test 6e8b885cec5ccba2090e92c90f747a7142f53c88
-F test/table.test c3c0302f0481e2610f50ede7d20d8bfed40bdd11
+F test/table.test 149b76a28bbe2a1cd799232e4ae5133881e1902a
 F test/tableapi.test 6a66d58b37d46dc0f2b3c7d4bd2617d209399bd1
 F test/tclsqlite.test 19578d32a7692311918caf0ae3521d19525bcb62
 F test/temptable.test 7927261befdbc7b0a7ffebb85ecc70a74fa7b15b
@@ -331,7 +331,7 @@ F www/tclsqlite.tcl ddcf912ea48695603c8ed7efb29f0812ef8d1b49
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl a99cf5f6d8bd4d5537584a2b342f0fb9fa601d8b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P ae301db8a61a74bc72f67f5766811d89a3b3ec72
-R 970835b0215388a3e334b58a7d07025c
+P a88580bce045ee1c11cc6fd986ee7bab043ded4f
+R 2caf522c84042dde1b412f517fefbe54
 U drh
-Z 1eae3162f7e9d21fbce45ab030354f27
+Z a798ff6c2214d388933326d22672d220
diff --git a/manifest.uuid b/manifest.uuid
index 3c5e1092f9..a6b4bc00ab 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-a88580bce045ee1c11cc6fd986ee7bab043ded4f
\ No newline at end of file
+0bd9e35fd22946640f4fb1c1874922ae096916f7
\ No newline at end of file
diff --git a/src/build.c b/src/build.c
index b0e81003de..655fee5439 100644
--- a/src/build.c
+++ b/src/build.c
@@ -22,7 +22,7 @@
 **     COMMIT
 **     ROLLBACK
 **
-** $Id: build.c,v 1.363 2005/12/29 19:23:07 drh Exp $
+** $Id: build.c,v 1.364 2005/12/29 23:33:54 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -635,7 +635,8 @@ void sqlite3StartTable(
   Token *pName1,   /* First part of the name of the table or view */
   Token *pName2,   /* Second part of the name of the table or view */
   int isTemp,      /* True if this is a TEMP table */
-  int isView       /* True if this is a VIEW */
+  int isView,      /* True if this is a VIEW */
+  int noErr        /* Do nothing if table already exists */
 ){
   Table *pTable;
   char *zName = 0; /* The name of the new table */
@@ -713,7 +714,9 @@ void sqlite3StartTable(
   }
   pTable = sqlite3FindTable(db, zName, db->aDb[iDb].zName);
   if( pTable ){
-    sqlite3ErrorMsg(pParse, "table %T already exists", pName);
+    if( !noErr ){
+      sqlite3ErrorMsg(pParse, "table %T already exists", pName);
+    }
     goto begin_table_error;
   }
   if( sqlite3FindIndex(db, zName, 0)!=0 && (iDb==0 || !db->init.busy) ){
@@ -1505,7 +1508,7 @@ void sqlite3CreateView(
     sqlite3SelectDelete(pSelect);
     return;
   }
-  sqlite3StartTable(pParse, pBegin, pName1, pName2, isTemp, 1);
+  sqlite3StartTable(pParse, pBegin, pName1, pName2, isTemp, 1, 0);
   p = pParse->pNewTable;
   if( p==0 || pParse->nErr ){
     sqlite3SelectDelete(pSelect);
diff --git a/src/parse.y b/src/parse.y
index 7fd8aa1203..13005756bb 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -14,7 +14,7 @@
 ** the parser.  Lemon will also generate a header file containing
 ** numeric codes for all of the tokens.
 **
-** @(#) $Id: parse.y,v 1.189 2005/12/29 01:11:37 drh Exp $
+** @(#) $Id: parse.y,v 1.190 2005/12/29 23:33:54 drh Exp $
 */
 
 // All token codes are small integers with #defines that begin with "TK_"
@@ -120,9 +120,12 @@ cmd ::= ROLLBACK trans_opt.    {sqlite3RollbackTransaction(pParse);}
 ///////////////////// The CREATE TABLE statement ////////////////////////////
 //
 cmd ::= create_table create_table_args.
-create_table ::= CREATE(X) temp(T) TABLE nm(Y) dbnm(Z). {
-   sqlite3StartTable(pParse,&X,&Y,&Z,T,0);
+create_table ::= CREATE(X) temp(T) TABLE ifnotexists(E) nm(Y) dbnm(Z). {
+   sqlite3StartTable(pParse,&X,&Y,&Z,T,0,E);
 }
+%type ifnotexists {int}
+ifnotexists(A) ::= .              {A = 0;}
+ifnotexists(A) ::= IF NOT EXISTS. {A = 1;}
 %type temp {int}
 %ifndef SQLITE_OMIT_TEMPDB
 temp(A) ::= TEMP.  {A = 1;}
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 2737c1d162..6868e240b7 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.444 2005/12/29 19:23:07 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.445 2005/12/29 23:33:54 drh Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -1482,7 +1482,7 @@ void sqlite3RollbackInternalChanges(sqlite3*);
 void sqlite3CommitInternalChanges(sqlite3*);
 Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*);
 void sqlite3OpenMasterTable(Vdbe *v, int);
-void sqlite3StartTable(Parse*,Token*,Token*,Token*,int,int);
+void sqlite3StartTable(Parse*,Token*,Token*,Token*,int,int,int);
 void sqlite3AddColumn(Parse*,Token*);
 void sqlite3AddNotNull(Parse*, int);
 void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
diff --git a/test/table.test b/test/table.test
index b5c2e4d14f..10839ab583 100644
--- a/test/table.test
+++ b/test/table.test
@@ -11,7 +11,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this file is testing the CREATE TABLE statement.
 #
-# $Id: table.test,v 1.42 2005/12/29 01:11:37 drh Exp $
+# $Id: table.test,v 1.43 2005/12/29 23:33:54 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -103,6 +103,9 @@ do_test table-2.1c {
   lappend v $msg
 } {1 {object name reserved for internal use: sqlite_master}}
 do_test table-2.1d {
+  catchsql {CREATE TABLE IF NOT EXISTS test2(x,y)}
+} {0 {}}
+do_test table-2.1e {
   execsql {DROP TABLE test2; SELECT name FROM sqlite_master WHERE type!='meta'}
 } {}