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Provide a more informative error message when a uniqueness constraint

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fails.  Ticket #419. (CVS 1068)

FossilOrigin-Name: 086aa1c9922b7bf399b3ee8b73ba7353d126b119
This commit is contained in:
drh
2003-08-05 13:13:38 +00:00
parent 4305d10360
commit 37ed48ed2f
11 changed files with 107 additions and 54 deletions
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26
src/insert.c
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@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle INSERT statements in SQLite.
**
** $Id: insert.c,v 1.88 2003/06/04 16:24:39 drh Exp $
** $Id: insert.c,v 1.89 2003/08/05 13:13:38 drh Exp $
*/
#include "sqliteInt.h"
@ -817,8 +817,30 @@ void sqliteGenerateConstraintChecks(
case OE_Rollback:
case OE_Abort:
case OE_Fail: {
int j, n1, n2;
char zErrMsg[200];
strcpy(zErrMsg, pIdx->nColumn>1 ? "columns " : "column ");
n1 = strlen(zErrMsg);
for(j=0; j<pIdx->nColumn && n1<sizeof(zErrMsg)-30; j++){
char *zCol = pTab->aCol[pIdx->aiColumn[j]].zName;
n2 = strlen(zCol);
if( j>0 ){
strcpy(&zErrMsg[n1], ", ");
n1 += 2;
}
if( n1+n2>sizeof(zErrMsg)-30 ){
strcpy(&zErrMsg[n1], "...");
n1 += 3;
break;
}else{
strcpy(&zErrMsg[n1], zCol);
n1 += n2;
}
}
strcpy(&zErrMsg[n1],
pIdx->nColumn>1 ? " are not unique" : " is not unique");
sqliteVdbeAddOp(v, OP_Halt, SQLITE_CONSTRAINT, onError);
sqliteVdbeChangeP3(v, -1, "uniqueness constraint failed", P3_STATIC);
sqliteVdbeChangeP3(v, -1, sqliteStrDup(zErrMsg), P3_DYNAMIC);
break;
}
case OE_Ignore: {