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Evaluate expressions only once when the same expression is used in both the

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result set and in the ORDER BY clause.

FossilOrigin-Name: c2f3bbad778504681b39ab9399a1eb3c1a35ab3f
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drh
2015-08-26 14:01:41 +00:00
parent 0576bc59a7
commit 5579d59fb3
8 changed files with 93 additions and 26 deletions
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4
src/resolve.c
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@@ -407,9 +407,9 @@ static int lookupName(
** resolved by the time the WHERE clause is resolved.
**
** The ability to use an output result-set column in the WHERE, GROUP BY,
** or HAVING clauses, or as part of a larger expression in the ORDRE BY
** or HAVING clauses, or as part of a larger expression in the ORDER BY
** clause is not standard SQL. This is a (goofy) SQLite extension, that
** is supported for backwards compatibility only. TO DO: Issue a warning
** is supported for backwards compatibility only. Hence, we issue a warning
** on sqlite3_log() whenever the capability is used.
*/
if( (pEList = pNC->pEList)!=0