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Add the experimental sqlite3_reoptimize() API.

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FossilOrigin-Name: 9bd6f3d8864d422fe42074688b191915b27ad8ea
This commit is contained in:
dan
2009-10-15 18:35:38 +00:00
parent 9bd42e96ac
commit 937d0dea4f
17 changed files with 880 additions and 84 deletions
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13
src/expr.c
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@@ -571,12 +571,12 @@ void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){
if( z[1]==0 ){
/* Wildcard of the form "?". Assign the next variable number */
assert( z[0]=='?' );
pExpr->iTable = ++pParse->nVar;
pExpr->iColumn = ++pParse->nVar;
}else if( z[0]=='?' ){
/* Wildcard of the form "?nnn". Convert "nnn" to an integer and
** use it as the variable number */
int i;
pExpr->iTable = i = atoi((char*)&z[1]);
pExpr->iColumn = i = atoi((char*)&z[1]);
testcase( i==0 );
testcase( i==1 );
testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
@@ -600,12 +600,12 @@ void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){
Expr *pE = pParse->apVarExpr[i];
assert( pE!=0 );
if( memcmp(pE->u.zToken, z, n)==0 && pE->u.zToken[n]==0 ){
pExpr->iTable = pE->iTable;
pExpr->iColumn = pE->iColumn;
break;
}
}
if( i>=pParse->nVarExpr ){
pExpr->iTable = ++pParse->nVar;
pExpr->iColumn = ++pParse->nVar;
if( pParse->nVarExpr>=pParse->nVarExprAlloc-1 ){
pParse->nVarExprAlloc += pParse->nVarExprAlloc + 10;
pParse->apVarExpr =
@@ -2164,7 +2164,7 @@ int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target){
assert( pExpr->u.zToken[0]!=0 );
if( pExpr->u.zToken[1]==0
&& (pOp = sqlite3VdbeGetOp(v, -1))->opcode==OP_Variable
&& pOp->p1+pOp->p3==pExpr->iTable
&& pOp->p1+pOp->p3==pExpr->iColumn
&& pOp->p2+pOp->p3==target
&& pOp->p4.z==0
){
@@ -2175,7 +2175,7 @@ int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target){
*/
pOp->p3++;
}else{
sqlite3VdbeAddOp3(v, OP_Variable, pExpr->iTable, target, 1);
sqlite3VdbeAddOp3(v, OP_Variable, pExpr->iColumn, target, 1);
if( pExpr->u.zToken[1]!=0 ){
sqlite3VdbeChangeP4(v, -1, pExpr->u.zToken, 0);
}
@@ -2801,6 +2801,7 @@ int sqlite3ExprCodeAndCache(Parse *pParse, Expr *pExpr, int target){
iMem = ++pParse->nMem;
sqlite3VdbeAddOp2(v, OP_Copy, inReg, iMem);
pExpr->iTable = iMem;
pExpr->op2 = pExpr->op;
pExpr->op = TK_REGISTER;
}
return inReg;