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Pull all the latest trunk changes into the sessions branch.

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FossilOrigin-Name: 361fb66a799f4f253e61ca94d999accde2c75b2c
This commit is contained in:
drh
2012-02-10 17:54:52 +00:00
parent adb96a62e5 76aad0d1df
commit fdf1795618
56 changed files with 5275 additions and 2661 deletions
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19
src/vdbe.c
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@@ -1341,19 +1341,26 @@ arithmetic_result_is_null:
break;
}
/* Opcode: CollSeq * * P4
/* Opcode: CollSeq P1 * * P4
**
** P4 is a pointer to a CollSeq struct. If the next call to a user function
** or aggregate calls sqlite3GetFuncCollSeq(), this collation sequence will
** be returned. This is used by the built-in min(), max() and nullif()
** functions.
**
** If P1 is not zero, then it is a register that a subsequent min() or
** max() aggregate will set to 1 if the current row is not the minimum or
** maximum. The P1 register is initialized to 0 by this instruction.
**
** The interface used by the implementation of the aforementioned functions
** to retrieve the collation sequence set by this opcode is not available
** publicly, only to user functions defined in func.c.
*/
case OP_CollSeq: {
assert( pOp->p4type==P4_COLLSEQ );
if( pOp->p1 ){
sqlite3VdbeMemSetInt64(&aMem[pOp->p1], 0);
}
break;
}
@@ -2863,7 +2870,7 @@ case OP_AutoCommit: {
** throw an ABORT exception), a statement transaction may also be opened.
** More specifically, a statement transaction is opened iff the database
** connection is currently not in autocommit mode, or if there are other
** active statements. A statement transaction allows the affects of this
** active statements. A statement transaction allows the changes made by this
** VDBE to be rolled back after an error without having to roll back the
** entire transaction. If no error is encountered, the statement transaction
** will automatically commit when the VDBE halts.
@@ -4885,6 +4892,7 @@ case OP_ParseSchema: {
db->init.busy = 0;
}
}
if( rc ) sqlite3ResetInternalSchema(db, -1);
if( rc==SQLITE_NOMEM ){
goto no_mem;
}
@@ -5219,7 +5227,6 @@ case OP_Program: { /* jump */
p->nOp = pProgram->nOp;
p->aOnceFlag = (u8 *)&p->apCsr[p->nCursor];
p->nOnceFlag = pProgram->nOnce;
p->nOp = pProgram->nOp;
pc = -1;
memset(p->aOnceFlag, 0, p->nOnceFlag);
@@ -5408,6 +5415,7 @@ case OP_AggStep: {
ctx.s.db = db;
ctx.isError = 0;
ctx.pColl = 0;
ctx.skipFlag = 0;
if( ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
assert( pOp>p->aOp );
assert( pOp[-1].p4type==P4_COLLSEQ );
@@ -5419,6 +5427,11 @@ case OP_AggStep: {
sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&ctx.s));
rc = ctx.isError;
}
if( ctx.skipFlag ){
assert( pOp[-1].opcode==OP_CollSeq );
i = pOp[-1].p1;
if( i ) sqlite3VdbeMemSetInt64(&aMem[i], 1);
}
sqlite3VdbeMemRelease(&ctx.s);