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Overview
| Comment: | More compact notation for the parse-tree view. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | tree-explain |
| Files: | files | file ages | folders |
| SHA1: |
0eb3f8b1e3a196811fb54a5e2645debe |
| User & Date: | drh 2011-12-07 15:33:14 |
Context
|
2011-12-07
| ||
| 22:49 | Additional detail added to the tree-explain output for SELECT statements. check-in: 7b457ea4 user: drh tags: tree-explain | |
| 15:33 | More compact notation for the parse-tree view. check-in: 0eb3f8b1 user: drh tags: tree-explain | |
| 01:47 | Bug fix in sqlite3SelectDup(). Make sure the pNext pointer is valid. check-in: 7e5b56b1 user: drh tags: tree-explain | |
Changes
Changes to src/expr.c.
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if( pExpr==0 ){
op = TK_NULL;
}else{
op = pExpr->op;
}
switch( op ){
case TK_AGG_COLUMN: {
sqlite3ExplainPrintf(pOut, "AGG_COLUMN(%s:%d:%d)",
pExpr->pTab->zName, pExpr->iTable, pExpr->iColumn);
break;
}
case TK_COLUMN: {
if( pExpr->iTable<0 ){
/* This only happens when coding check constraints */
sqlite3ExplainPrintf(pOut, "COLUMN(%d)", pExpr->iColumn);
}else{
sqlite3ExplainPrintf(pOut, "COLUMN(%s:%d:%d)",
pExpr->pTab->zName, pExpr->iTable, pExpr->iColumn);
}
break;
}
case TK_INTEGER: {
if( pExpr->flags & EP_IntValue ){
sqlite3ExplainPrintf(pOut, "INTEGER(%d)", pExpr->u.iValue);
}else{
sqlite3ExplainPrintf(pOut, "INTEGER(%s)", pExpr->u.zToken);
}
break;
}
#ifndef SQLITE_OMIT_FLOATING_POINT
case TK_FLOAT: {
sqlite3ExplainPrintf(pOut,"REAL(%s)", pExpr->u.zToken);
break;
}
#endif
case TK_STRING: {
sqlite3ExplainPrintf(pOut,"STRING(%s)", pExpr->u.zToken);
break;
}
case TK_NULL: {
sqlite3ExplainPrintf(pOut,"NULL");
break;
}
#ifndef SQLITE_OMIT_BLOB_LITERAL
case TK_BLOB: {
int n;
const char *z;
assert( !ExprHasProperty(pExpr, EP_IntValue) );
assert( pExpr->u.zToken[0]=='x' || pExpr->u.zToken[0]=='X' );
assert( pExpr->u.zToken[1]=='\'' );
z = &pExpr->u.zToken[2];
n = sqlite3Strlen30(z) - 1;
assert( z[n]=='\'' );
sqlite3ExplainPrintf(pOut,"BLOB(%.*s)", n, z);
break;
}
#endif
case TK_VARIABLE: {
sqlite3ExplainPrintf(pOut,"VARIABLE(%s,%d)",
pExpr->u.zToken, pExpr->iColumn);
break;
|
| | | | | | | | < < < < < < < < | |
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if( pExpr==0 ){
op = TK_NULL;
}else{
op = pExpr->op;
}
switch( op ){
case TK_AGG_COLUMN: {
sqlite3ExplainPrintf(pOut, "AGG{%d:%d}",
pExpr->iTable, pExpr->iColumn);
break;
}
case TK_COLUMN: {
if( pExpr->iTable<0 ){
/* This only happens when coding check constraints */
sqlite3ExplainPrintf(pOut, "COLUMN(%d)", pExpr->iColumn);
}else{
sqlite3ExplainPrintf(pOut, "{%d:%d}",
pExpr->iTable, pExpr->iColumn);
}
break;
}
case TK_INTEGER: {
if( pExpr->flags & EP_IntValue ){
sqlite3ExplainPrintf(pOut, "%d", pExpr->u.iValue);
}else{
sqlite3ExplainPrintf(pOut, "%s", pExpr->u.zToken);
}
break;
}
#ifndef SQLITE_OMIT_FLOATING_POINT
case TK_FLOAT: {
sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken);
break;
}
#endif
case TK_STRING: {
sqlite3ExplainPrintf(pOut,"%Q", pExpr->u.zToken);
break;
}
case TK_NULL: {
sqlite3ExplainPrintf(pOut,"NULL");
break;
}
#ifndef SQLITE_OMIT_BLOB_LITERAL
case TK_BLOB: {
sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken);
break;
}
#endif
case TK_VARIABLE: {
sqlite3ExplainPrintf(pOut,"VARIABLE(%s,%d)",
pExpr->u.zToken, pExpr->iColumn);
break;
|
Changes to src/select.c.
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sqlite3ExplainNL(pVdbe);
if( p->pSrc && p->pSrc->nSrc ){
int i;
sqlite3ExplainPrintf(pVdbe, "FROM ");
sqlite3ExplainPush(pVdbe);
for(i=0; i<p->pSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
sqlite3ExplainPrintf(pVdbe, "src[%d] = ", i);
if( pItem->pSelect ){
sqlite3ExplainSelect(pVdbe, pItem->pSelect);
}else if( pItem->zName ){
sqlite3ExplainPrintf(pVdbe, "%s", pItem->zName);
}
if( pItem->pTab ){
sqlite3ExplainPrintf(pVdbe, " (name=%s:%d)",
pItem->pTab->zName, pItem->iCursor);
}
if( pItem->jointype & JT_LEFT ){
sqlite3ExplainPrintf(pVdbe, " LEFT-JOIN");
}
if( pItem->zAlias ){
sqlite3ExplainPrintf(pVdbe, " (AS %s)", pItem->zAlias);
}
sqlite3ExplainNL(pVdbe);
}
sqlite3ExplainPop(pVdbe);
}
if( p->pWhere ){
sqlite3ExplainPrintf(pVdbe, "WHERE ");
sqlite3ExplainExpr(pVdbe, p->pWhere);
|
| > > > | | < < < < |
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sqlite3ExplainNL(pVdbe);
if( p->pSrc && p->pSrc->nSrc ){
int i;
sqlite3ExplainPrintf(pVdbe, "FROM ");
sqlite3ExplainPush(pVdbe);
for(i=0; i<p->pSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
sqlite3ExplainPrintf(pVdbe, "{%d,*} = ", pItem->iCursor);
if( pItem->pSelect ){
sqlite3ExplainSelect(pVdbe, pItem->pSelect);
if( pItem->pTab ){
sqlite3ExplainPrintf(pVdbe, " (tabname=%s)", pItem->pTab->zName);
}
}else if( pItem->zName ){
sqlite3ExplainPrintf(pVdbe, "%s", pItem->zName);
}
if( pItem->zAlias ){
sqlite3ExplainPrintf(pVdbe, " (AS %s)", pItem->zAlias);
}
if( pItem->jointype & JT_LEFT ){
sqlite3ExplainPrintf(pVdbe, " LEFT-JOIN");
}
sqlite3ExplainNL(pVdbe);
}
sqlite3ExplainPop(pVdbe);
}
if( p->pWhere ){
sqlite3ExplainPrintf(pVdbe, "WHERE ");
sqlite3ExplainExpr(pVdbe, p->pWhere);
|