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Overview
Comment: | Expand on the comment above OP_Destroy to explain why it throws an error if there are any active reader VMs. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
b9a8c2b9bec9f537b2d5aff6659a5748 |
User & Date: | dan 2017-04-08 14:11:47.626 |
Context
2017-04-08
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18:18 | Disallow leading zeros on numeric constants in JSON. Fix for ticket [b93be8729a895a528e2] (check-in: 204e72f008 user: drh tags: trunk) | |
14:11 | Expand on the comment above OP_Destroy to explain why it throws an error if there are any active reader VMs. (check-in: b9a8c2b9be user: dan tags: trunk) | |
13:52 | Have the rtree module close any open blob-handle within the xSavepoint method. This prevents such an open blob handle from interfering with DROP TABLE operations. (check-in: fa4416adc2 user: dan tags: trunk) | |
Changes
Changes to src/vdbe.c.
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5382 5383 5384 5385 5386 5387 5388 | ** P3==1 then the table to be clear is in the auxiliary database file ** that is used to store tables create using CREATE TEMPORARY TABLE. ** ** If AUTOVACUUM is enabled then it is possible that another root page ** might be moved into the newly deleted root page in order to keep all ** root pages contiguous at the beginning of the database. The former ** value of the root page that moved - its value before the move occurred - | | | | | > > > > > > > | 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 | ** P3==1 then the table to be clear is in the auxiliary database file ** that is used to store tables create using CREATE TEMPORARY TABLE. ** ** If AUTOVACUUM is enabled then it is possible that another root page ** might be moved into the newly deleted root page in order to keep all ** root pages contiguous at the beginning of the database. The former ** value of the root page that moved - its value before the move occurred - ** is stored in register P2. If no page movement was required (because the ** table being dropped was already the last one in the database) then a ** zero is stored in register P2. If AUTOVACUUM is disabled then a zero ** is stored in register P2. ** ** This opcode throws an error if there are any active reader VMs when ** it is invoked. This is done to avoid the difficulty associated with ** updating existing cursors when a root page is moved in an AUTOVACUUM ** database. This error is thrown even if the database is not an AUTOVACUUM ** db in order to avoid introducing an incompatibility between autovacuum ** and non-autovacuum modes. ** ** See also: Clear */ case OP_Destroy: { /* out2 */ int iMoved; int iDb; |
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