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Overview
Comment: | Add an ALWAYS() around a branch in sqlite3BtreeSkipNext() that we believe must always be true. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
12be361a532df0c22a7e4d97658b82a6 |
User & Date: | drh 2018-07-09 20:41:39.352 |
Context
2018-07-09
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20:58 | Add a comment to restriction (6) of the push-down optimization. No changes to code. (check-in: 0c8a2f257f user: drh tags: trunk) | |
20:41 | Add an ALWAYS() around a branch in sqlite3BtreeSkipNext() that we believe must always be true. (check-in: 12be361a53 user: drh tags: trunk) | |
18:55 | Avoid leaving view-definitions with an incomplete set of column names/types in the in-memory schema if an OOM strikes while allocating the same. (check-in: 1ddbb5372e user: dan tags: trunk) | |
Changes
Changes to src/btree.c.
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5192 5193 5194 5195 5196 5197 5198 | /* ** This function is a no-op if cursor pCur does not point to a valid row. ** Otherwise, if pCur is valid, configure it so that the next call to ** sqlite3BtreeNext() is a no-op. */ #ifndef SQLITE_OMIT_WINDOWFUNC void sqlite3BtreeSkipNext(BtCursor *pCur){ | > > > | | 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 | /* ** This function is a no-op if cursor pCur does not point to a valid row. ** Otherwise, if pCur is valid, configure it so that the next call to ** sqlite3BtreeNext() is a no-op. */ #ifndef SQLITE_OMIT_WINDOWFUNC void sqlite3BtreeSkipNext(BtCursor *pCur){ /* We believe that the cursor must always be in the valid state when ** this routine is called, but the proof is difficult, so we add an ** ALWaYS() test just in case we are wrong. */ if( ALWAYS(pCur->eState==CURSOR_VALID) ){ pCur->eState = CURSOR_SKIPNEXT; pCur->skipNext = 1; } } #endif /* SQLITE_OMIT_WINDOWFUNC */ /* Move the cursor to the last entry in the table. Return SQLITE_OK |
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