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Overview
Comment: | Update requirements marks due to improvements in the wording of documentation. No changes to code. |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: | bf903b2ecac5d7b25c9cc899cae41f1d |
User & Date: | drh 2016-09-27 00:09:33 |
Context
2016-09-28
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16:04 | Fix typos in comments. No code changes. check-in: 5bbd071d user: drh tags: trunk | |
2016-09-27
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00:09 | Update requirements marks due to improvements in the wording of documentation. No changes to code. check-in: bf903b2e user: drh tags: trunk | |
00:03 | Fix FTS3 test cases due to the flattener change of the previous check-in. check-in: 0c8b9b21 user: drh tags: trunk | |
Changes
Changes to src/build.c.
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** since it was last read. ** ** This plan is not completely bullet-proof. It is possible for ** the schema to change multiple times and for the cookie to be ** set back to prior value. But schema changes are infrequent ** and the probability of hitting the same cookie value is only ** 1 chance in 2^32. So we're safe enough. */ void sqlite3ChangeCookie(Parse *pParse, int iDb){ sqlite3 *db = pParse->db; Vdbe *v = pParse->pVdbe; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, db->aDb[iDb].pSchema->schema_cookie+1); |
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** since it was last read. ** ** This plan is not completely bullet-proof. It is possible for ** the schema to change multiple times and for the cookie to be ** set back to prior value. But schema changes are infrequent ** and the probability of hitting the same cookie value is only ** 1 chance in 2^32. So we're safe enough. ** ** IMPLEMENTATION-OF: R-34230-56049 SQLite automatically increments ** the schema-version whenever the schema changes. */ void sqlite3ChangeCookie(Parse *pParse, int iDb){ sqlite3 *db = pParse->db; Vdbe *v = pParse->pVdbe; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, db->aDb[iDb].pSchema->schema_cookie+1); |
Changes to src/vdbe.c.
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** counter. If the statement transaction needs to be rolled back, ** the value of this counter needs to be restored too. */ p->nStmtDefCons = db->nDeferredCons; p->nStmtDefImmCons = db->nDeferredImmCons; } /* Gather the schema version number for checking: ** IMPLEMENTATION-OF: R-32195-19465 The schema version is used by SQLite ** each time a query is executed to ensure that the internal cache of the ** schema used when compiling the SQL query matches the schema of the ** database against which the compiled query is actually executed. */ sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta); iGen = db->aDb[pOp->p1].pSchema->iGeneration; }else{ iGen = iMeta = 0; } assert( pOp->p5==0 || pOp->p4type==P4_INT32 ); |
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** counter. If the statement transaction needs to be rolled back, ** the value of this counter needs to be restored too. */ p->nStmtDefCons = db->nDeferredCons; p->nStmtDefImmCons = db->nDeferredImmCons; } /* Gather the schema version number for checking: ** IMPLEMENTATION-OF: R-03189-51135 As each SQL statement runs, the schema ** version is checked to ensure that the schema has not changed since the ** SQL statement was prepared. */ sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta); iGen = db->aDb[pOp->p1].pSchema->iGeneration; }else{ iGen = iMeta = 0; } assert( pOp->p5==0 || pOp->p4type==P4_INT32 ); |