Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
Comment: | Mark a single branch within sqlite3SelectExpand() as an optimization. |
---|---|
Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
3a4ffb21d0ee2326c31b9ddc512d79d4 |
User & Date: | drh 2017-10-02 23:50:08.350 |
References
2017-10-03
| ||
14:24 | The simplification to sqlite3SelectExpand() in last night's [3a4ffb21] check-in was not completely correct. This adjustment is needed for correct OOM handling in some configurations. (check-in: c5ad5e1675 user: drh tags: trunk) | |
Context
2017-10-03
| ||
03:01 | Do not compute column and row size estimates for the transient Table objects associated with the result set of a SELECT statement, since those estimates are never used for anything constructive. (check-in: e4342fd401 user: drh tags: trunk) | |
2017-10-02
| ||
23:50 | Mark a single branch within sqlite3SelectExpand() as an optimization. (check-in: 3a4ffb21d0 user: drh tags: trunk) | |
23:30 | Simplification to sqlite3SelectPrep() for improved testability. (check-in: 5bf2ccb908 user: drh tags: trunk) | |
Changes
Changes to src/select.c.
︙ | ︙ | |||
4641 4642 4643 4644 4645 4646 4647 | ** The calling function can detect the problem by looking at pParse->nErr ** and/or pParse->db->mallocFailed. */ static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){ Walker w; w.xExprCallback = sqlite3ExprWalkNoop; w.pParse = pParse; | | | 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 | ** The calling function can detect the problem by looking at pParse->nErr ** and/or pParse->db->mallocFailed. */ static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){ Walker w; w.xExprCallback = sqlite3ExprWalkNoop; w.pParse = pParse; if( OK_IF_ALWAYS_TRUE(pParse->hasCompound) ){ w.xSelectCallback = convertCompoundSelectToSubquery; w.xSelectCallback2 = 0; sqlite3WalkSelect(&w, pSelect); } w.xSelectCallback = selectExpander; w.xSelectCallback2 = selectPopWith; sqlite3WalkSelect(&w, pSelect); |
︙ | ︙ |