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Materialize any CTE that is used more than once.

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FossilOrigin-Name: ba59159fbe6b83fb6d79fbfee22d983768b0ebbaac7e99d2ac66c810e5e04100
This commit is contained in:
drh
2021-02-21 23:44:14 +00:00
parent 7601294ad3
commit a79e2a2d28
9 changed files with 117 additions and 42 deletions
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8
src/treeview.c
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@@ -111,7 +111,10 @@ void sqlite3TreeViewWith(TreeView *pView, const With *pWith, u8 moreToFollow){
}
sqlite3_str_appendf(&x, ")");
}
sqlite3_str_appendf(&x, " AS");
if( pCte->pUse ){
sqlite3_str_appendf(&x, " (pUse=0x%p, nUse=%d)", pCte->pUse,
pCte->pUse->nUse);
}
sqlite3StrAccumFinish(&x);
sqlite3TreeViewItem(pView, zLine, i<pWith->nCte-1);
sqlite3TreeViewSelect(pView, pCte->pSelect, 0);
@@ -150,6 +153,9 @@ void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc){
if( pItem->fg.fromDDL ){
sqlite3_str_appendf(&x, " DDL");
}
if( pItem->fg.isCte ){
sqlite3_str_appendf(&x, " CteUse=0x%p", pItem->u2.pCteUse);
}
sqlite3StrAccumFinish(&x);
sqlite3TreeViewItem(pView, zLine, i<pSrc->nSrc-1);
if( pItem->pSelect ){