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NULL values in a row of a unique index cause the row to be distinct.

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Ticket #1301.  More testing and optimization needs to be done on this
before closing the ticket. (CVS 2526)

FossilOrigin-Name: 06a71b162b032fc5b56d18919a784d4ee94dde7c
This commit is contained in:
drh
2005-06-24 03:53:06 +00:00
parent 2f47149691
commit 7f057c9166
7 changed files with 72 additions and 67 deletions
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7
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 1.139 2005/06/12 21:35:52 drh Exp $
** $Id: insert.c,v 1.140 2005/06/24 03:53:06 drh Exp $
*/
#include "sqliteInt.h"
@@ -949,7 +949,7 @@ void sqlite3GenerateConstraintChecks(
sqlite3VdbeAddOp(v, OP_Dup, i+extra+nCol-idx, 1);
}
}
jumpInst1 = sqlite3VdbeAddOp(v, OP_MakeRecord, pIdx->nColumn, (1<<24));
jumpInst1 = sqlite3VdbeAddOp(v, OP_MakeIdxRec, pIdx->nColumn, 0);
sqlite3IndexAffinityStr(v, pIdx);
/* Find out what action to take in case there is an indexing conflict */
@@ -1019,9 +1019,8 @@ void sqlite3GenerateConstraintChecks(
}
}
contAddr = sqlite3VdbeCurrentAddr(v);
assert( contAddr<(1<<24) );
#if NULL_DISTINCT_FOR_UNIQUE
sqlite3VdbeChangeP2(v, jumpInst1, contAddr | (1<<24));
sqlite3VdbeChangeP2(v, jumpInst1, contAddr);
#endif
sqlite3VdbeChangeP2(v, jumpInst2, contAddr);
}