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The ALTER TABLE command should not attempt to rename objects that are

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contained within an expression tree that has been optimized out because
it is the other branch of an "AND false" expression.
Ticket [533010b8cacebe82]

FossilOrigin-Name: 04bd5cb73287f926f1ecf578998fa6ce1379474e86918c692eae5778d0817cef
This commit is contained in:
drh
2019-06-11 02:43:22 +00:00
parent a753d40039
commit b854b76733
4 changed files with 27 additions and 11 deletions
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6
src/expr.c
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@@ -894,9 +894,11 @@ Expr *sqlite3ExprAnd(Parse *pParse, Expr *pLeft, Expr *pRight){
return pRight;
}else if( pRight==0 ){
return pLeft;
}else if( pParse->nErr || IN_RENAME_OBJECT ){
return sqlite3PExpr(pParse, TK_AND, pLeft, pRight);
}else if( ExprAlwaysFalse(pLeft) || ExprAlwaysFalse(pRight) ){
if( IN_RENAME_OBJECT ){
sqlite3RenameExprUnmap(pParse, pLeft);
sqlite3RenameExprUnmap(pParse, pRight);
}
sqlite3ExprDelete(db, pLeft);
sqlite3ExprDelete(db, pRight);
return sqlite3ExprAlloc(db, TK_INTEGER, &sqlite3IntTokens[0], 0);