SQLite

Check-in [5fdb6b0aaf]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Edit the WHEN and UPDATE OF clauses of trigger programs as part of ALTER TABLE RENAME COLUMN.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | edit-trigger-wrapper
Files: files | file ages | folders
SHA3-256: 5fdb6b0aafba727139e1937ef5950e4434a77f95a10fc46f8010ca2de3922326
User & Date: dan 2018-08-13 17:14:26.913
Context
2018-08-14
20:18
Have ALTER TABLE RENAME edit column references in CREATE VIEW statements. (check-in: db829dc1a2 user: dan tags: edit-trigger-wrapper)
2018-08-13
17:14
Edit the WHEN and UPDATE OF clauses of trigger programs as part of ALTER TABLE RENAME COLUMN. (check-in: 5fdb6b0aaf user: dan tags: edit-trigger-wrapper)
15:09
Fix legacy comments on Token. Begin commenting the new ALTER TABLE RENAME COLUMN code. Fix a memory leak in the sqlite_rename_column() SQL function. (check-in: 32edc89203 user: drh tags: alter-table-rename-column)
Changes
Side-by-Side Diff Ignore Whitespace Patch
Changes to src/alter.c.
842
843
844
845
846
847
848
849

850
851
852
853
854
855
856
842
843
844
845
846
847
848

849
850
851
852
853
854
855
856







-
+







  if( !zNew ) goto exit_rename_column;
  assert( pNew->n>0 );
  bQuote = sqlite3Isquote(pNew->z[0]);
  sqlite3NestedParse(pParse, 
      "UPDATE \"%w\".%s SET "
      "sql = sqlite_rename_column(sql, %d, %d, %Q, %Q, %Q) "
      "WHERE name NOT LIKE 'sqlite_%%' AND ("
      "   type = 'table' OR (type='index' AND tbl_name = %Q)"
      "   type = 'table' OR (type IN ('index', 'trigger') AND tbl_name = %Q)"
      ")",
      zDb, MASTER_NAME, iCol, bQuote, zNew, pTab->zName, zOld, pTab->zName
  );

  /* Drop and reload the database schema. */
  if( pParse->pVdbe ){
    sqlite3ChangeCookie(pParse, iSchema);
887
888
889
890
891
892
893

894
895
896
897

898
899
900
901
902
903
904
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906







+




+







  RenameToken *pNext;    /* Next is a list of all RenameToken objects */
};

/*
** The context of an ALTER TABLE RENAME COLUMN operation that gets passed
** down into the Walker.
*/
typedef struct RenameCtx RenameCtx;
struct RenameCtx {
  RenameToken *pList;             /* List of tokens to overwrite */
  int nList;                      /* Number of tokens in pList */
  int iCol;                       /* Index of column being renamed */
  const char *zOld;               /* Old column name */
};

/*
** Add a new RenameToken object mapping parse tree element pPtr into
** token *pToken to the Parse object currently under construction.
*/
void sqlite3RenameToken(Parse *pParse, void *pPtr, Token *pToken){
936
937
938
939
940
941
942
943

944
945
946
947
948
949
950




951
952
953
954
955
956
957
958
959










960
961
962
963
964




965
966
967
968
969

970
971
972
973
974
975
976
938
939
940
941
942
943
944

945
946
947
948
949
950


951
952
953
954
955
956

957
958
959



960
961
962
963
964
965
966
967
968
969





970
971
972
973
974
975
976
977

978
979
980
981
982
983
984
985







-
+





-
-
+
+
+
+


-



-
-
-
+
+
+
+
+
+
+
+
+
+
-
-
-
-
-
+
+
+
+




-
+







  RenameToken *p;
  for(p=pToken; p; p=pNext){
    pNext = p->pNext;
    sqlite3DbFree(db, p);
  }
}

static RenameToken *renameTokenFind(Parse *pParse, void *pPtr){
static void renameTokenFind(Parse *pParse, RenameCtx *pCtx, void *pPtr){
  RenameToken **pp;
  for(pp=&pParse->pRename; (*pp); pp=&(*pp)->pNext){
    if( (*pp)->p==pPtr ){
      RenameToken *pToken = *pp;
      *pp = pToken->pNext;
      pToken->pNext = 0;
      return pToken;
      pToken->pNext = pCtx->pList;
      pCtx->pList = pToken;
      pCtx->nList++;
      break;
    }
  }
  return 0;
}

static int renameColumnExprCb(Walker *pWalker, Expr *pExpr){
  struct RenameCtx *p = pWalker->u.pRename;
  if( pExpr->op==TK_COLUMN && pExpr->iColumn==p->iCol ){
    RenameToken *pTok = renameTokenFind(pWalker->pParse, (void*)pExpr);
  RenameCtx *p = pWalker->u.pRename;
  if( p->zOld && pExpr->op==TK_DOT ){
    Expr *pLeft = pExpr->pLeft;
    Expr *pRight = pExpr->pRight;
    assert( pLeft->op==TK_ID && pRight->op==TK_ID );
    if( 0==sqlite3_stricmp(pLeft->u.zToken, "old")
     || 0==sqlite3_stricmp(pLeft->u.zToken, "new")
    ){
      if( 0==sqlite3_stricmp(pRight->u.zToken, p->zOld) ){
        renameTokenFind(pWalker->pParse, p, (void*)pRight);
    if( pTok ){
      pTok->pNext = p->pList;
      p->pList = pTok;
      p->nList++;
    }
      }
    }
  }else if( pExpr->op==TK_COLUMN && pExpr->iColumn==p->iCol ){
    renameTokenFind(pWalker->pParse, p, (void*)pExpr);
  }
  return WRC_Continue;
}

static RenameToken *renameColumnTokenNext(struct RenameCtx *pCtx){
static RenameToken *renameColumnTokenNext(RenameCtx *pCtx){
  RenameToken *pBest = pCtx->pList;
  RenameToken *pToken;
  RenameToken **pp;

  for(pToken=pBest->pNext; pToken; pToken=pToken->pNext){
    if( pToken->t.z>pBest->t.z ) pBest = pToken;
  }
985
986
987
988
989
990
991
992

993
994
995
996
997
998
999
994
995
996
997
998
999
1000

1001
1002
1003
1004
1005
1006
1007
1008







-
+







*/
static void renameColumnFunc(
  sqlite3_context *context,
  int NotUsed,
  sqlite3_value **argv
){
  sqlite3 *db = sqlite3_context_db_handle(context);
  struct RenameCtx sCtx;
  RenameCtx sCtx;
  const char *zSql = (const char*)sqlite3_value_text(argv[0]);
  int nSql = sqlite3_value_bytes(argv[0]);
  int bQuote = sqlite3_value_int(argv[2]);
  const char *zNew = (const char*)sqlite3_value_text(argv[3]);
  int nNew = sqlite3_value_bytes(argv[3]);
  const char *zTable = (const char*)sqlite3_value_text(argv[4]);
  const char *zOld = (const char*)sqlite3_value_text(argv[5]);
1015
1016
1017
1018
1019
1020
1021

1022


1023
1024
1025
1026
1027
1028
1029
1024
1025
1026
1027
1028
1029
1030
1031

1032
1033
1034
1035
1036
1037
1038
1039
1040







+
-
+
+







  memset(&sParse, 0, sizeof(sParse));
  sParse.eParseMode = PARSE_MODE_RENAME_COLUMN;
  sParse.db = db;
  sParse.nQueryLoop = 1;
  rc = sqlite3RunParser(&sParse, zSql, &zErr);
  assert( sParse.pNewTable==0 || sParse.pNewIndex==0 );
  if( db->mallocFailed ) rc = SQLITE_NOMEM;
  if( rc==SQLITE_OK 
  if( rc==SQLITE_OK && sParse.pNewTable==0 && sParse.pNewIndex==0 ){
   && sParse.pNewTable==0 && sParse.pNewIndex==0 && sParse.pNewTrigger==0 
  ){
    rc = SQLITE_CORRUPT_BKPT;
  }

  if( rc==SQLITE_OK ){
    zQuot = sqlite3_mprintf("\"%w\"", zNew);
    if( zQuot==0 ){
      rc = SQLITE_NOMEM;
1063
1064
1065
1066
1067
1068
1069
1070
1071


1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088

1089
1090
1091
1092
1093
1094
1095
1096
1097
1098

1099
1100
1101
1102
1103
1104
1105

1106
1107











1108
1109
1110
1111
1112
1113
1114
1074
1075
1076
1077
1078
1079
1080


1081
1082
1083

1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095

1096

1097





1098
1099
1100
1101

1102



1103
1104
1105

1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126







-
-
+
+

-












-

-
+
-
-
-
-
-




-
+
-
-
-



-
+


+
+
+
+
+
+
+
+
+
+
+







  sWalker.xExprCallback = renameColumnExprCb;
  sWalker.u.pRename = &sCtx;

  if( sParse.pNewTable ){
    int bFKOnly = sqlite3_stricmp(zTable, sParse.pNewTable->zName);
    FKey *pFKey;
    if( bFKOnly==0 ){
      sCtx.pList = renameTokenFind(
          &sParse, (void*)sParse.pNewTable->aCol[sCtx.iCol].zName
      renameTokenFind(
          &sParse, &sCtx, (void*)sParse.pNewTable->aCol[sCtx.iCol].zName
      );
      sCtx.nList = 1;
      assert( sCtx.iCol>=0 );
      if( sParse.pNewTable->iPKey==sCtx.iCol ){
        sCtx.iCol = -1;
      }
      sqlite3WalkExprList(&sWalker, sParse.pNewTable->pCheck);
      for(pIdx=sParse.pNewTable->pIndex; pIdx; pIdx=pIdx->pNext){
        sqlite3WalkExprList(&sWalker, pIdx->aColExpr);
      }
    }

    for(pFKey=sParse.pNewTable->pFKey; pFKey; pFKey=pFKey->pNextFrom){
      for(i=0; i<pFKey->nCol; i++){
        RenameToken *pTok = 0;
        if( bFKOnly==0 && pFKey->aCol[i].iFrom==sCtx.iCol ){
          pTok = renameTokenFind(&sParse, (void*)&pFKey->aCol[i]);
          renameTokenFind(&sParse, &sCtx, (void*)&pFKey->aCol[i]);
          if( pTok ){
            pTok->pNext = sCtx.pList;
            sCtx.pList = pTok;
            sCtx.nList++;
          }
        }
        if( 0==sqlite3_stricmp(pFKey->zTo, zTable)
         && 0==sqlite3_stricmp(pFKey->aCol[i].zCol, zOld)
        ){
          pTok = renameTokenFind(&sParse, (void*)pFKey->aCol[i].zCol);
          renameTokenFind(&sParse, &sCtx, (void*)pFKey->aCol[i].zCol);
          pTok->pNext = sCtx.pList;
          sCtx.pList = pTok;
          sCtx.nList++;
        }
      }
    }
  }else{
  }else if( sParse.pNewIndex ){
    sqlite3WalkExprList(&sWalker, sParse.pNewIndex->aColExpr);
    sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere);
  }else{
    sCtx.zOld = zOld;
    sqlite3WalkExpr(&sWalker, sParse.pNewTrigger->pWhen);
    if( sParse.pNewTrigger->pColumns ){
      for(i=0; i<sParse.pNewTrigger->pColumns->nId; i++){
        char *zName = sParse.pNewTrigger->pColumns->a[i].zName;
        if( 0==sqlite3_stricmp(zName, zOld) ){
          renameTokenFind(&sParse, &sCtx, (void*)zName);
        }
      }
    }
  }

  assert( nQuot>=nNew );
  zOut = sqlite3DbMallocZero(db, nSql + sCtx.nList*nQuot + 1);
  if( zOut ){
    int nOut = nSql;
    memcpy(zOut, zSql, nSql);
1144
1145
1146
1147
1148
1149
1150

1151
1152
1153
1154
1155
1156
1157
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170







+








renameColumnFunc_done:
  if( sParse.pVdbe ){
    sqlite3VdbeFinalize(sParse.pVdbe);
  }
  sqlite3DeleteTable(db, sParse.pNewTable);
  if( sParse.pNewIndex ) sqlite3FreeIndex(db, sParse.pNewIndex);
  sqlite3DeleteTrigger(db, sParse.pNewTrigger);
  renameTokenFree(db, sParse.pRename);
  renameTokenFree(db, sCtx.pList);
  sqlite3ParserReset(&sParse);
  sqlite3_free(zQuot);
}

/*
Changes to src/build.c.
3682
3683
3684
3685
3686
3687
3688
3689


3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706



3707
3708
3709
3710
3711
3712
3713
3682
3683
3684
3685
3686
3687
3688

3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717







-
+
+

















+
+
+








/*
** Append a new element to the given IdList.  Create a new IdList if
** need be.
**
** A new IdList is returned, or NULL if malloc() fails.
*/
IdList *sqlite3IdListAppend(sqlite3 *db, IdList *pList, Token *pToken){
IdList *sqlite3IdListAppend(Parse *pParse, IdList *pList, Token *pToken){
  sqlite3 *db = pParse->db;
  int i;
  if( pList==0 ){
    pList = sqlite3DbMallocZero(db, sizeof(IdList) );
    if( pList==0 ) return 0;
  }
  pList->a = sqlite3ArrayAllocate(
      db,
      pList->a,
      sizeof(pList->a[0]),
      &pList->nId,
      &i
  );
  if( i<0 ){
    sqlite3IdListDelete(db, pList);
    return 0;
  }
  pList->a[i].zName = sqlite3NameFromToken(db, pToken);
  if( IN_RENAME_COLUMN && pList->a[i].zName ){
    sqlite3RenameToken(pParse, (void*)pList->a[i].zName, pToken);
  }
  return pList;
}

/*
** Delete an IdList.
*/
void sqlite3IdListDelete(sqlite3 *db, IdList *pList){
Changes to src/parse.y.
904
905
906
907
908
909
910
911

912
913

914
915
916
917
918
919
920
904
905
906
907
908
909
910

911
912

913
914
915
916
917
918
919
920







-
+

-
+







%destructor idlist_opt {sqlite3IdListDelete(pParse->db, $$);}
%type idlist {IdList*}
%destructor idlist {sqlite3IdListDelete(pParse->db, $$);}

idlist_opt(A) ::= .                       {A = 0;}
idlist_opt(A) ::= LP idlist(X) RP.    {A = X;}
idlist(A) ::= idlist(A) COMMA nm(Y).
    {A = sqlite3IdListAppend(pParse->db,A,&Y);}
    {A = sqlite3IdListAppend(pParse,A,&Y);}
idlist(A) ::= nm(Y).
    {A = sqlite3IdListAppend(pParse->db,0,&Y); /*A-overwrites-Y*/}
    {A = sqlite3IdListAppend(pParse,0,&Y); /*A-overwrites-Y*/}

/////////////////////////// Expression Processing /////////////////////////////
//

%type expr {Expr*}
%destructor expr {sqlite3ExprDelete(pParse->db, $$);}
%type term {Expr*}
Changes to src/sqliteInt.h.
3877
3878
3879
3880
3881
3882
3883
3884

3885
3886
3887
3888
3889
3890
3891
3877
3878
3879
3880
3881
3882
3883

3884
3885
3886
3887
3888
3889
3890
3891







-
+







  void sqlite3AutoincrementEnd(Parse *pParse);
#else
# define sqlite3AutoincrementBegin(X)
# define sqlite3AutoincrementEnd(X)
#endif
void sqlite3Insert(Parse*, SrcList*, Select*, IdList*, int, Upsert*);
void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*);
IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*);
IdList *sqlite3IdListAppend(Parse*, IdList*, Token*);
int sqlite3IdListIndex(IdList*,const char*);
SrcList *sqlite3SrcListEnlarge(sqlite3*, SrcList*, int, int);
SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*);
SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*,
                                      Token*, Select*, Expr*, IdList*);
void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *);
void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*);
Changes to src/tokenize.c.
693
694
695
696
697
698
699


700


701
702
703
704
705
706
707
708
709
693
694
695
696
697
698
699
700
701

702
703
704

705
706
707
708
709
710
711







+
+
-
+
+

-







  if( !IN_SPECIAL_PARSE ){
    /* If the pParse->declareVtab flag is set, do not delete any table 
    ** structure built up in pParse->pNewTable. The calling code (see vtab.c)
    ** will take responsibility for freeing the Table structure.
    */
    sqlite3DeleteTable(db, pParse->pNewTable);
  }
  if( !IN_RENAME_COLUMN ){
    sqlite3DeleteTrigger(db, pParse->pNewTrigger);

  }

  if( pParse->pWithToFree ) sqlite3WithDelete(db, pParse->pWithToFree);
  sqlite3DeleteTrigger(db, pParse->pNewTrigger);
  sqlite3DbFree(db, pParse->pVList);
  while( pParse->pAinc ){
    AutoincInfo *p = pParse->pAinc;
    pParse->pAinc = p->pNext;
    sqlite3DbFreeNN(db, p);
  }
  while( pParse->pZombieTab ){
Changes to src/trigger.c.
177
178
179
180
181
182
183

184
185
186
187
188
189
190
191









192
193
194
195
196
197
198
177
178
179
180
181
182
183
184








185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200







+
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+







  /* Check that the trigger name is not reserved and that no trigger of the
  ** specified name exists */
  zName = sqlite3NameFromToken(db, pName);
  if( !zName || SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
    goto trigger_cleanup;
  }
  assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
  if( !IN_RENAME_COLUMN ){
  if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),zName) ){
    if( !noErr ){
      sqlite3ErrorMsg(pParse, "trigger %T already exists", pName);
    }else{
      assert( !db->init.busy );
      sqlite3CodeVerifySchema(pParse, iDb);
    }
    goto trigger_cleanup;
    if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),zName) ){
      if( !noErr ){
        sqlite3ErrorMsg(pParse, "trigger %T already exists", pName);
      }else{
        assert( !db->init.busy );
        sqlite3CodeVerifySchema(pParse, iDb);
      }
      goto trigger_cleanup;
    }
  }

  /* Do not create a trigger on a system table */
  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){
    sqlite3ErrorMsg(pParse, "cannot create trigger on system table");
    goto trigger_cleanup;
  }
208
209
210
211
212
213
214
215

216
217
218
219
220
221
222
210
211
212
213
214
215
216

217
218
219
220
221
222
223
224







-
+







  if( !pTab->pSelect && tr_tm==TK_INSTEAD ){
    sqlite3ErrorMsg(pParse, "cannot create INSTEAD OF"
        " trigger on table: %S", pTableName, 0);
    goto trigger_cleanup;
  }

#ifndef SQLITE_OMIT_AUTHORIZATION
  {
  if( !IN_RENAME_COLUMN ){
    int iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema);
    int code = SQLITE_CREATE_TRIGGER;
    const char *zDb = db->aDb[iTabDb].zDbSName;
    const char *zDbTrig = isTemp ? db->aDb[1].zDbSName : zDb;
    if( iTabDb==1 || isTemp ) code = SQLITE_CREATE_TEMP_TRIGGER;
    if( sqlite3AuthCheck(pParse, code, zName, pTab->zName, zDbTrig) ){
      goto trigger_cleanup;
242
243
244
245
246
247
248




249
250




251
252
253
254
255
256
257
244
245
246
247
248
249
250
251
252
253
254


255
256
257
258
259
260
261
262
263
264
265







+
+
+
+
-
-
+
+
+
+







  pTrigger->zName = zName;
  zName = 0;
  pTrigger->table = sqlite3DbStrDup(db, pTableName->a[0].zName);
  pTrigger->pSchema = db->aDb[iDb].pSchema;
  pTrigger->pTabSchema = pTab->pSchema;
  pTrigger->op = (u8)op;
  pTrigger->tr_tm = tr_tm==TK_BEFORE ? TRIGGER_BEFORE : TRIGGER_AFTER;
  if( IN_RENAME_COLUMN ){
    pTrigger->pWhen = pWhen;
    pWhen = 0;
  }else{
  pTrigger->pWhen = sqlite3ExprDup(db, pWhen, EXPRDUP_REDUCE);
  pTrigger->pColumns = sqlite3IdListDup(db, pColumns);
    pTrigger->pWhen = sqlite3ExprDup(db, pWhen, EXPRDUP_REDUCE);
  }
  pTrigger->pColumns = pColumns;
  pColumns = 0;
  assert( pParse->pNewTrigger==0 );
  pParse->pNewTrigger = pTrigger;

trigger_cleanup:
  sqlite3DbFree(db, zName);
  sqlite3SrcListDelete(db, pTableName);
  sqlite3IdListDelete(db, pColumns);
291
292
293
294
295
296
297








298
299
300
301
302
303
304
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320







+
+
+
+
+
+
+
+







  sqlite3TokenInit(&nameToken, pTrig->zName);
  sqlite3FixInit(&sFix, pParse, iDb, "trigger", &nameToken);
  if( sqlite3FixTriggerStep(&sFix, pTrig->step_list) 
   || sqlite3FixExpr(&sFix, pTrig->pWhen) 
  ){
    goto triggerfinish_cleanup;
  }

#ifndef SQLITE_OMIT_ALTERTABLE
  if( IN_RENAME_COLUMN ){
    assert( !db->init.busy );
    pParse->pNewTrigger = pTrig;
    pTrig = 0;
  }else
#endif

  /* if we are not initializing,
  ** build the sqlite_master entry
  */
  if( !db->init.busy ){
    Vdbe *v;
    char *z;
333
334
335
336
337
338
339
340

341
342
343
344
345
346
347
349
350
351
352
353
354
355

356
357
358
359
360
361
362
363







-
+







      pLink->pNext = pTab->pTrigger;
      pTab->pTrigger = pLink;
    }
  }

triggerfinish_cleanup:
  sqlite3DeleteTrigger(db, pTrig);
  assert( !pParse->pNewTrigger );
  assert( IN_RENAME_COLUMN || !pParse->pNewTrigger );
  sqlite3DeleteTriggerStep(db, pStepList);
}

/*
** Duplicate a range of text from an SQL statement, then convert all
** whitespace characters into ordinary space characters.
*/
Changes to test/altercol.test.
126
127
128
129
130
131
132
133

134
135
136
137
138
139
140
126
127
128
129
130
131
132

133
134
135
136
137
138
139
140







-
+







db close
sqlite3 db test.db

do_execsql_test 3.2 {
  SELECT * FROM t4;
} {3 2 1}

# do_execsql_test 3.3 { INSERT INTO t4 VALUES(6, 5, 4); } {}
do_execsql_test 3.3 { INSERT INTO t4 VALUES(6, 5, 4); } {}

#-------------------------------------------------------------------------
#
do_execsql_test 4.0 {
  CREATE TABLE c1(a, b, FOREIGN KEY (a, b) REFERENCES p1(c, d));
  CREATE TABLE p1(c, d, PRIMARY KEY(c, d));
  PRAGMA foreign_keys = 1;
203
204
205
206
207
208
209
210



























211
212
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239








+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+


do_catchsql_test 6.2 {
  ALTER TABLE "blob" RENAME COLUMN "a1" TO [where];
} {0 {}}

do_execsql_test 6.3 {
  SELECT "where" FROM blob;
} {}

#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 7.0 {
  CREATE TABLE c(x);
  INSERT INTO c VALUES(0);
  CREATE TABLE t6("col a", "col b", "col c");
  CREATE TRIGGER zzz AFTER UPDATE OF "col a", "col c" ON t6 BEGIN
    UPDATE c SET x=x+1;
  END;
}

do_execsql_test 7.1 {
  INSERT INTO t6 VALUES(0, 0, 0);
  UPDATE t6 SET "col c" = 1;
  SELECT * FROM c;
} {1}

do_execsql_test 7.2 {
  ALTER TABLE t6 RENAME "col c" TO "col 3";
}

do_execsql_test 7.3 {
  UPDATE t6 SET "col 3" = 0;
  SELECT * FROM c;
} {2}

finish_test