97bae794c2
Add a new opcode to the VDBE that gives the b-tree a hint about the set
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of columns in a table or index that are actually used by the query.
FossilOrigin-Name: f167bba446b78dd7538d0b2bae3e6678f3b1ba28
2015-06-05 15:59:57 +00:00
d62fbb50e6
Change the name of SrcList.a[].zIndex to the more descriptive
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SrcList.a[0].zIndexedBy.
FossilOrigin-Name: 6a9cf063379118dbb95c6cdc6d60af50e9867177
2015-06-04 12:08:53 +00:00
24dee9d214
Always check for cell overflow before returning a slot from the
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pageFindSlot routine in btree.c.
FossilOrigin-Name: 9f035c45a4b84203e67b6e1b23cf11691dc43f1e
2015-06-02 19:36:29 +00:00
4c393a82df
For FROM-clause subqueries that cannot be flattened, try to push relevant
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WHERE clause terms of the outer query down into the subquery in order to help
the subquery run faster and/or use less memory.
FossilOrigin-Name: 6df18e949d3676290785143993513ea1b917d729
2015-06-02 18:09:18 +00:00
05883a3409
Rename SQLITE_AFF_NONE to SQLITE_AFF_BLOB.
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FossilOrigin-Name: bce3f04186cd2d69414a5a98b5b77dc8f060554a
2015-06-02 15:32:08 +00:00
cd8fb7cfd5
Fix a faulty assert() in btree.c. Update the database fuzz test file with
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new test cases.
FossilOrigin-Name: 4e621af1345a001360938de76e3b0a14deb5e991
2015-06-02 14:02:18 +00:00
69b72d5a29
For FROM-clause subqueries that cannot be flattened, try to push WHERE clause
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terms of the outer query down into the subquery in order to help the subquery
run faster and/or use less memory.
FossilOrigin-Name: 297fae7551a2af9e600d833801ff79fca0602ad5
2015-06-01 20:28:03 +00:00
fcb9f4f3ca
Corrections to comments in expr.c. No code changes.
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FossilOrigin-Name: f925389eaf5bf8962a28fcaa652b75caa606efba
2015-06-01 18:13:16 +00:00
2efcf2aac2
Fix minor typo in comment. No changes to code.
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FossilOrigin-Name: 73fc058b3a74c1b018cff990de793f19a602c12f
2015-05-30 22:05:17 +00:00
1c8badeb26
Ensure that allocateBtreePage() always clears the MemPage pointer when
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it fails due to an I/O or memory allocation error.
FossilOrigin-Name: 09a38bf665902834936d39341627ded88142e6ae
2015-05-29 18:42:11 +00:00
e726622579
Move two unreachable conditionals inside of NEVER() or assert().
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FossilOrigin-Name: db4e9728fae5f7b0fad6aa0a5be317a7c9e7c417
2015-05-29 17:51:16 +00:00
1f2d968622
Remove a corruption test in balance_nonroot that is superceded by a prior
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better check.
FossilOrigin-Name: 00693682d8664fa608ba43684f6376a9bd5b84eb
2015-05-29 17:13:14 +00:00
d092ed4355
Add some extra source-code comments and a test case.
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FossilOrigin-Name: 6d410442fb532e2cf0ad1859bc9e843651f8ff4d
2015-05-29 14:36:30 +00:00
7b3aa08e22
An attempt to allow automatic index creation on subqueries accessed via
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co-routine.
FossilOrigin-Name: 521345add67e9dfd7df1446eb942aa0d84b9e6eb
2015-05-29 13:55:33 +00:00
7cea7f95c7
Using "SELECT ALL" instead of just "SELECT" on a query that uses a single
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unflattenable subquery or view in its FROM clause will force the subquery to
be manifested into a temporary table rather than run incrementally using a
co-routine. This is a stop-gap means of controlling the decision to manifest
while we try to work out a better to make that decision automatically.
FossilOrigin-Name: a29e117d7ecec05da949348689dbfb0d3acb1280
2015-05-29 01:35:19 +00:00
c68275032e
Added comments and testcase() macros to error cases in the btree search.
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FossilOrigin-Name: 7da7dc714bf1fe34b38fc33a923490dfd3e4f070
2015-05-28 15:14:32 +00:00
73d340adff
Earlier detection of incompatible sibling pages in balance_nonroot.
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FossilOrigin-Name: 60a09f17d8b70dbc4b020586a1b81bce76882729
2015-05-28 11:23:11 +00:00
7e8c6f1c2e
Add the btreeGetUnusedPage() routine to btree.c, and use it to detect content
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pages on the freelist and to cause that condition to trigger an SQLITE_CORRUPT.
FossilOrigin-Name: fe15d1f70360d6fef8ef1a111dd43e060d059623
2015-05-28 03:28:27 +00:00
275fe3adf1
Do not attempt to take any write lock on a read-only database on Windows.
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FossilOrigin-Name: a47ff0cdab0f82398c68ea770053f193f4812a51
2015-05-28 00:54:35 +00:00
b52e9c89df
All bytes of a page are initialized, even bytes that follow a 2-byte cell
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on a malformed page.
FossilOrigin-Name: 7373a004ed0e2781cda503c73e9a94f24350ef79
2015-05-27 18:13:35 +00:00
f9705d4b66
A different approach to preventing buffer overreads when comparing a vector
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of values with a corrupt index record that spans at least one overflow page.
FossilOrigin-Name: 95eaa49f4ee071c7a0f690a695f1f2d1ebca68a8
2015-05-27 15:42:53 +00:00
a7298ac191
Disallow the use of "rowid" in CTEs - it has never worked correctly and it
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makes no sense, so we might as well make it an explicit error.
Also: add the PRAGMA cell_size_check=ON command.
FossilOrigin-Name: 19e2cebc12aaa4e72d3bad74af73575a0457e5d4
2015-05-27 15:10:20 +00:00
3548db7c13
A different approach to preventing buffer overreads when comparing a vector of values with a corrupt index record that spans at least one overflow page.
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FossilOrigin-Name: 7e9e1b6123bc455dd7d1c894b6154ccd27acec18
2015-05-27 14:21:05 +00:00
fccda8a162
CTEs have never add working rowids. So disallow the use of the "rowid" column
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within CTEs.
FossilOrigin-Name: 0055df0445932a43e42b318ef88672dcbe312c3a
2015-05-27 13:06:55 +00:00
1421d980c5
Add the "PRAGMA cell_size_check=ON" command.
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FossilOrigin-Name: 2ead43f074d01312c7642e1df9abccc95547f019
2015-05-27 03:46:18 +00:00
b95e1193d5
Avoid a buffer overread when comparing against a corrupt record that spans at least one overflow page.
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FossilOrigin-Name: 62a5b3633a086694ef0e579a0a82322cb1ae3d60
2015-05-26 20:31:20 +00:00
cc7aa1f6f3
Avoid branching on an uninitalized variable when comparing SQL values with the undefined serial types 10 and 11 (which only appear in corrupt databases).
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FossilOrigin-Name: b4a45d3b78fede2433ac18f20b1ab7bddee77059
2015-05-26 20:07:32 +00:00
584390e8dd
Fix a one-byte buffer overread that may follow a syntax error while preparing an SQL statement.
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FossilOrigin-Name: 075003930da98419f671b7833a5850693529fb62
2015-05-26 18:58:57 +00:00
633d0753ab
Add a cast to one side of the test added by [97806a78] in order to avoid a signed/unsigned comparison warning.
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FossilOrigin-Name: 5b46d2a78a45de4176b666bfc89c2aaa6f083662
2015-05-26 17:33:30 +00:00
fb0246ba8a
Return SQLITE_CORRUPT to the user if an attempt is made to add database page 1 to the free page list.
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FossilOrigin-Name: 68876003f922635737349f55bc73a78891ea7028
2015-05-26 12:18:17 +00:00
c5b7358513
Fix a problem with ignoring UNIQUE constraints on WITHOUT ROWID tables rendered redundant by the PRIMARY KEY.
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FossilOrigin-Name: 3b936913f3dc2cae4c94f983f28d85b136a44c9f
2015-05-26 11:53:14 +00:00
c3e8ef1d0e
Fix a case of a corrupt database causing SQLite to read from up to 4 bytes before the start of a memory allocation.
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FossilOrigin-Name: 7d2c4f7b6695806ab8ce0c6f49d8bc1d77a4320b
2015-05-25 20:04:15 +00:00
08f901b008
Have the b-tree layer return SQLITE_CORRUPT to any attempt to open a cursor with a root page number less than 1.
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FossilOrigin-Name: aa18c8e9d1676b1caa53bc5f5c1dc5f201089b88
2015-05-25 19:24:36 +00:00
0f8076dd69
Fix a couple of btree asserts that would fail when encountering 32-bit rollover in cell payload size fields (cell payloads this large always indicate corruption).
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FossilOrigin-Name: 8fa0937a2f3476dd280259e252d6f422c33d38ee
2015-05-25 18:47:26 +00:00
2fc3a6cd98
Fix a case where database corruption may cause SQLite to write past the end of a buffer.
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FossilOrigin-Name: 97806a78142b15f89878e25ee70dc5b0524d6793
2015-05-25 17:07:29 +00:00
cf3d17c604
Fix an assert() in btree routine freeSpace() that may be false if the database is corrupt.
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FossilOrigin-Name: 00a473c56188cd60a74559effb114140e3fe8a8d
2015-05-25 15:03:49 +00:00
af80a1c8e7
Fix an obsolete comment - no changes to code.
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FossilOrigin-Name: 4e4228c47f862c7f1fb078bf1b8c1d604f09d365
2015-05-25 10:29:52 +00:00
521d7bd214
Remove an incorrect and pointless assert().
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FossilOrigin-Name: 8c3929bd42ff9c041df341aced5b7dbc0f563506
2015-05-25 09:33:48 +00:00
7ca0954c2c
The assert() changes removed in the previous check-in are needed after all.
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FossilOrigin-Name: 336fccc84cd7b770c9c3720efc9976269096232e
2015-05-24 21:46:03 +00:00
0b538f2a81
Better detection of corruption in allocateSpace() in btree.c.
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FossilOrigin-Name: bf7bb53ee2485a5342916d514d6c7291eb84c5f1
2015-05-24 21:09:52 +00:00
a1f75d96fd
Detect database corruption in the modifyPagePointer() routine and abort.
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FossilOrigin-Name: 4f0bba42f904e505900be67b00179ebb1f24ed03
2015-05-24 10:18:12 +00:00
82110da971
Instead of early detection of corruption in balance_nonroot, simply ignore
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the error, as it is harmless and exceedingly uncommon.
FossilOrigin-Name: 7bbf9b3cd6ebf103ebd8347579aef721d0dcd2dc
2015-05-23 19:53:48 +00:00
3183ac590d
Earlier detection of a specific kind of corruption in the balance_nonroot()
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routine.
FossilOrigin-Name: ee6dc9913a8733891576e6e298241f7440209c5e
2015-05-23 19:29:08 +00:00
3c46b7f7fd
Minor documentation improvements. No changes to code.
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FossilOrigin-Name: e446d9ce0049b8ce0fd4f03205a0c32776fc76cd
2015-05-23 02:44:00 +00:00
cea1dc2798
Fix another bad assert() in btree - one that can be false on a corrupt database
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file.
FossilOrigin-Name: 89f0bbfde4d86a7b15e93aab9c487b4355c6fb2d
2015-05-22 23:39:29 +00:00
10ca5b4809
Make sure sqlite3_value_dup() works correctly even for sqlite3_value
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objects that are marked SQLITE_STATIC.
FossilOrigin-Name: f332ffc39b7a17fd6254d8dc699293a57a508ba0
2015-05-22 21:04:54 +00:00
9dfedc8246
Fix minor issues with the sqlite3_value_dup() interface.
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FossilOrigin-Name: 95edcf5010ecb8edd8eb74279c4766f9b655d4a2
2015-05-22 19:55:10 +00:00
fd29973f11
Update with fixes and enhancements from trunk.
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FossilOrigin-Name: 9605d008f5c763137e9734d033fe4510ca316858
2015-05-22 18:40:48 +00:00
e2248cfd2d
The SRT_Table type for the SelectDest object is now just an SRT_EphemTab for
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which the ephemeral table has already been allocated.
FossilOrigin-Name: b9727e6bbfc3c62c601227e86e62f2f39792fd1d
2015-05-22 17:29:27 +00:00
afe028a815
Fix two faulty assert statements discovered by fuzzing.
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FossilOrigin-Name: 799817bfb2bc95963c0e0d70063c4cb15c94ef74
2015-05-22 13:09:50 +00:00
drh