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Change the way generated columns are computed so that no column is computed

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inside branch code that might not be taken.  Ticket [4fc08501f4e56692]

FossilOrigin-Name: 9e07b48934e9a972dcf62e3538b3b21ffa044c553feba0441675ac0bbe13bcb2
This commit is contained in:
drh
2019-11-06 22:19:07 +00:00
parent bde3a4f680
commit dfa15270c4
6 changed files with 69 additions and 38 deletions
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11
src/expr.c
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@@ -3645,16 +3645,7 @@ expr_code_doover:
iSrc = sqlite3TableColumnToStorage(pTab, iCol) - pParse->iSelfTab;
#ifndef SQLITE_OMIT_GENERATED_COLUMNS
if( pCol->colFlags & COLFLAG_GENERATED ){
if( pCol->colFlags & COLFLAG_BUSY ){
sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"",
pCol->zName);
return 0;
}
pCol->colFlags |= COLFLAG_BUSY;
if( pCol->colFlags & COLFLAG_NOTAVAIL ){
sqlite3ExprCodeGeneratedColumn(pParse, pCol, iSrc);
}
pCol->colFlags &= ~(COLFLAG_BUSY|COLFLAG_NOTAVAIL);
sqlite3ExprCodeGeneratedColumn(pParse, pCol, iSrc);
return iSrc;
}else
#endif /* SQLITE_OMIT_GENERATED_COLUMNS */