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Fix a performance problem in sqlite3session_diff().

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FossilOrigin-Name: ea400eca314d81761fe5c0e329b906c045f0dfe4
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dan
2015-04-23 14:40:17 +00:00
parent 6ea60c7c53
commit dd009f839c
4 changed files with 48 additions and 10 deletions
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2
ext/session/sqlite3session.c
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@ -1417,7 +1417,7 @@ static int sessionDiffFindModified(
rc = SQLITE_NOMEM;
}else{
char *zStmt = sqlite3_mprintf(
"SELECT * FROM \"%w\".\"%w\", \"%w\".\"%w\" WHERE %s AND %z",
"SELECT * FROM \"%w\".\"%w\", \"%w\".\"%w\" WHERE %s AND (%z)",
pSession->zDb, pTab->zName, zFrom, pTab->zName, zExpr, zExpr2
);
if( zStmt==0 ){