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Preliminary code to support RIGHT JOIN. Everything seems to work, except that

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the code to compute the unmatched rows for the RIGHT JOIN has not yet been
added, so the result of a RIGHT JOIN is currently the same as an INNER JOIN.

FossilOrigin-Name: 415abd6731b8e8a605adabfa6066c8a852a8531c300df41325d5f7e75cae5a70
This commit is contained in:
drh
2022-04-08 19:20:12 +00:00
parent 7d0ae00361
commit a76ac88af8
12 changed files with 103 additions and 90 deletions
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6
src/treeview.c
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@@ -144,8 +144,12 @@ void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc){
sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p used=%llx",
pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab, pItem->colUsed);
}
if( pItem->fg.jointype & JT_LEFT ){
if( (pItem->fg.jointype & (JT_LEFT|JT_RIGHT))==(JT_LEFT|JT_RIGHT) ){
sqlite3_str_appendf(&x, " FULL-OUTER-JOIN");
}else if( pItem->fg.jointype & JT_LEFT ){
sqlite3_str_appendf(&x, " LEFT-JOIN");
}else if( pItem->fg.jointype & JT_RIGHT ){
sqlite3_str_appendf(&x, " RIGHT-JOIN");
}else if( pItem->fg.jointype & JT_CROSS ){
sqlite3_str_appendf(&x, " CROSS-JOIN");
}