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2416 Commits

Author SHA1 Message Date
drh
49a76a8fe5 Add "PRAGMA analysis_limit=N;" to limit the number of rows visited by 
ANALYZE when N is positive.  Positive N also disables collecting stat4.

FossilOrigin-Name: a279b151c1623807774daf4975175c62ea252eefb71f9820ced6773769b392c5
 2020-03-31 20:57:06 +00:00
dan
892edb69c4 Use __atomic_load_n() and __atomic_store_n() for a few more things where they are available. 
FossilOrigin-Name: a49f8ec552bede7da731e0571ccf49de1a30e7be3a5673150436c8b411ba6ffc
 2020-03-30 13:35:05 +00:00
drh
74a07986ce Fix to the recomputation of the colUsed field added by check-in 
[a9bb71ba708ba722].  This fixes ticket [5829597ac43811e3].

FossilOrigin-Name: 5d14a1c4f2fc17de98ad685ad1422cdfda89dfccb00afcaf32ee416b6f84f525
 2020-03-21 23:10:38 +00:00
dan
31f170f396 Ensure that "main" can always be used to refer to the main database, even if it has been renamed using SQLITE_DBCONFIG_MAINDBNAME. 
FossilOrigin-Name: 682b426f5658254e63dff02c960b557fb33cb3e944fdd14faa0aa9988af7269a
 2020-03-21 15:41:55 +00:00
dan
465c2b8964 Consolidate some code on this branch. 
FossilOrigin-Name: a85c63daa640e02fdfd891a05a1a09e848c9621a5dd6e112338451008623ecbb
 2020-03-21 15:10:40 +00:00
drh
2aee514b4c Recompute the set of columns used for each table when the table is 
involved in query flattening.

FossilOrigin-Name: a9bb71ba708ba72255ba8d18c9856e38ddf53eae2d61c8435149354fb2b2459e
 2020-03-21 00:05:53 +00:00
drh
9b258c54e4 Rename sqlite3ExprCodeAtInit() to sqlite3ExprCodeRunJustOnce(). 
Other changes to make the new code cleaner.  Test cases added.

FossilOrigin-Name: d7f18489978fdbbe3ab317485518cac91a75416ccef55898301afdd76d3b415b
 2020-03-11 19:41:49 +00:00
drh
e7375bfa72 Enhanced detection logic for preventing the use of static schema expressions 
by code generating routines.

FossilOrigin-Name: 5f60b527b938c0778e8f725c635ce0dc5ed7a4e01fd6252aa2cdb64da2f625bc
 2020-03-10 19:24:38 +00:00
dan
0ea2d42ac3 Report an error if the main, or any other, database encoding is modified by an external process (perhaps using the backup API) after the db has been opened. 
FossilOrigin-Name: 895bd20b29e223496e1585483c6ce3335ae9050f2e5de4d6b69d0e40df396862
 2020-03-05 18:04:09 +00:00
drh
42a630b1da Change the sqlite3.pDfltColl (the default collating sequence for the 
database connection) so that it is the collating sequence appropriate for
the database encoding, not the UTF8 collating sequence.  This helps to
ensure that the database encoding collation is always used, even for
expressions that do not have an defined collating sequence.
Ticket [1b8d7264567eb6fc].

FossilOrigin-Name: 4a5851893c3d71cc823b6ab5df5e58a852cd322fff26290f1ea05b63d67f564a
 2020-03-05 16:13:24 +00:00
drh
78d1d225d8 A better (smaller and faster) solution to ticket [4374860b29383380]. 
FossilOrigin-Name: abc473fb8fb999005dc79a360e34f97b3b25429decf1820dd2afa5c19577753d
 2020-02-17 19:25:07 +00:00
drh
bf48ce49f7 Take care when checking the table of a TK_COLUMN expression node to see if the 
table is a virtual table to first ensure that the Expr.y.pTab pointer is not
null due to generated column optimizations.  Ticket [4374860b29383380].

FossilOrigin-Name: 9d0d4ab95dc0c56e053c2924ed322a9ea7b25439e6f74599f706905a1994e454
 2020-02-17 00:12:04 +00:00
drh
efdba1a8b3 Increase the default upper bound on the number of parameters in a single 
SQL statement to 32766 (from 999).

FossilOrigin-Name: 2def75693a8ae002375aff80db0e6c970c75f75e8b6ba64f2c518712badb0ae8
 2020-02-12 20:50:20 +00:00
drh
b48c0d59fa Simplify the code by removing the unsupported and undocumented 
SQLITE_HAS_CODEC compile-time option

FossilOrigin-Name: 5a877221ce90e7523059353a68650c5fdd28ed032807afc2f10afbfbf864bdfe
 2020-02-07 01:12:53 +00:00
dan
3cdc820544 Enable more detailed log messages in SQLITE_ENABLE_CORRUPT_PGNO builds if database corruption is encountered. 
FossilOrigin-Name: 57c36a293e16bb4d9652874124ee1447bef278e08664bc8dd0070a0ee2ef1173
 2020-02-04 20:01:44 +00:00
drh
02a95eb9bb Faster decoding of 32-bit variable-length integers in cases were we do not 
need to know the number of bytes in the encoding.

FossilOrigin-Name: 59a31b16b54a0068c81ee65bc2fa905c2c826e98da3a7ffd8c3ea860a2827b4a
 2020-01-28 20:27:42 +00:00
drh
8875b9e7b5 Rearchitect the way in which filenames are stored in the Pager object so that 
the sqlite3_uri_parameter() interface will work from journal and WAL filenames
too.  This check-in implements the central idea, and compile and runs somewhat,
but crashes on an extended test.

FossilOrigin-Name: 2ae77bd2335708343bce4541b4d2cf16edfe3fd5bc2dfb93757238c926aa960b
 2020-01-10 18:05:55 +00:00
drh
05b32ee3c0 Fix a problem that restricted edgy functions in TEMP tables. 
New test cases added.

FossilOrigin-Name: 8878c40753566a8c4ccd1d413019cabde7569b947f730527d13bfc3db384e97d
 2020-01-09 01:20:03 +00:00
drh
0dfa5255bc Check for whether or not it is safe to use non-innocuous functions as the 
function is being coded, not when its name is resolved.

FossilOrigin-Name: 1da802d54b689a462e1fe899c6ffa08ef14d34f36728b14b055b5a76b1edc274
 2020-01-08 17:28:19 +00:00
drh
b77da374ab Invert the UNTRUSTED_SCHEMA setting to be TRUSTED_SCHEMA. 
FossilOrigin-Name: f5fcf1fbc6473f8e91315b14d67745f2748010641b7463d1f4ca51e6fdf97462
 2020-01-07 16:09:11 +00:00
drh
2928a15b3c Refactor names of flags for improved legibility. 
FossilOrigin-Name: 411e8ec2219bb4181aaf2209fb1e7baf5e8df8b8c8adb82a69b48cf7e8e7e7d4
 2020-01-06 15:25:41 +00:00
drh
67c826536f Refactor the names of the new controls for restricting what actions the schema 
can take behind the application's back.

FossilOrigin-Name: 65d7d39a858c51ffd781f5a6335e029895e597aeb1e1ccdadea8ce79c8ad412f
 2020-01-04 20:58:41 +00:00
drh
79d5bc80c7 Enhance PRAGMA function_list so that it shows all instances of each FuncDef, 
the number of arguments, the encoding, the type, and the flags.  Use this
capability to locate and fix incorrect function flags in the standard build.

FossilOrigin-Name: 9ca906d24a2e88eddb2fd067783512b66cfc49dce1596d816a1c38a09d128218
 2020-01-04 01:43:02 +00:00
drh
4be621e1ba Invert the SQLITE_FUNC_SAFE bit to be SQLITE_FUNC_UNSAFE. The external 
bit is still SQLITE_INNOCUOUS.  It gets inverted as the appdef function
is registered.

FossilOrigin-Name: 1c266cb3be46d26e640752a99979acb1a1809361ba70ca3fca981c42383c360e
 2020-01-03 21:57:53 +00:00
drh
c4ad849921 When UNSAFE_IN_VIEW is disabled, only allow functions in views that are 
tagged with SQLITE_INNOCUOUS.

FossilOrigin-Name: 9ee79b254e4c51a2a41f7ed49ad389d8d7105e649483adb79772052fa0ade3c0
 2020-01-03 20:57:38 +00:00
drh
9ee00200ef Merge fixes from trunk. 
FossilOrigin-Name: 002406df22995880d002be2e4cebb4d560283d4e0d7a4b5a34edcb110802b543
 2020-01-03 15:22:54 +00:00
drh
0cbec59c8b When generating the name of a view (or common table expression) because the 
SQL does not specify a name, avoid the names "true" and "false" which might
be confused for the boolean literals of the same name, leading to an
inconsistent abstract syntax tree.

FossilOrigin-Name: ff9492d3ff733c222ea67f23d478df1547641b5e2e6dd870b0b29e25c13f3739
 2020-01-03 02:20:37 +00:00
drh
618ee33614 Merge enhancements from trunk. 
FossilOrigin-Name: 091403a6705f5f1352c76eacbfdca75fe0bab12ab9b156842641de07c38d3f66
 2020-01-02 23:50:50 +00:00
drh
378ca1eab3 Merge the latest enhancements from trunk. 
FossilOrigin-Name: bd57e6d923d3b04f0a07aaf18bf389d2b2b7efc7c57e8cb37e6ef910662d8397
 2020-01-02 21:41:59 +00:00
dan
4ea562ee70 Ensure that when code for a scalar SELECT featuring window functions is generated more than once by the planner, separate ephemeral tables are opened for each instance. 
FossilOrigin-Name: ce1417325273aba866767349b55d9bbfb61a08e716bebda2122918a9657ee38c
 2020-01-01 20:17:15 +00:00
drh
171c50ec38 New test-only SQL functions: implies_nonnull_row(), expr_compare(), and 
expr_implies_expr().  The SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test-control
is modified to toggle internal function access on and off for a single
database connection.

FossilOrigin-Name: 473892a8eceacf24d57fd0c72ff2a0b8be4e0d75e0af7a30bdb24fbc3b453601
 2020-01-01 15:43:30 +00:00
drh
25c4296bd9 Factor out code generation for in-line SQL functions into a separate routine 
inside of expr.c.

FossilOrigin-Name: 586a65a28fc6cac77309612abc32a2e1017c65e0387f9f438f5d8ac8406da8eb
 2020-01-01 13:55:08 +00:00
drh
b945bcdaf1 Experimental branch with new sqlite3_db_config() options that could possible 
enhance security for applications reading potentially compromised database
files.

FossilOrigin-Name: 96a2db2612f2e47bbec0e374a242820c88f03c42ccbf8467abccaef41469bae2
 2019-12-31 22:52:10 +00:00
drh
64de2a5f7b Also set the SQLITE_DIRECTONLY flag on the load_extension() function. 
FossilOrigin-Name: 3bd095a53119c368fe30e539983588b27957203344cf427405b9a64784b8eba7
 2019-12-31 18:39:23 +00:00
drh
cf014f6cbd Refactor names. Use "small" instead of "mini" to describe the smaller 
of the two lookaside memory allocation sizes.

FossilOrigin-Name: 88d244983854cdc1a369c5df09ae00f1098784db768ba4e17b963d187dcb1009
 2019-12-31 15:12:34 +00:00
drh
5f6a2ed7f2 Merge recent enhancements from trunk. 
FossilOrigin-Name: 39d55579376906f212271ce9b2d367e3ad029fb173f22c7253312b467970208a
 2019-12-31 14:49:10 +00:00
drh
be3da24134 Add the OP_FinishSeek opcode which completes an OP_DeferredSeek if the seek 
has not already completed.  Also add the sqlite3WhereUsesDeferredSeek()
interface to the query planner.  The UPDATE implementation adds an
OP_FinishSeek before running the final OP_Insert if one is needed.
Ticket [ec8abb025e78f40c] and also an assertion fault reported by Yongheng.

FossilOrigin-Name: 21ef6e99331210b80fa7c71b4f02e8f768a748d01aef884368af2f6b51a067e0
 2019-12-29 00:52:41 +00:00
drh
a9ebfe2030 When the sqlite3WindowRewrite() routine detects and error, have it convert 
the SELECT statement into just "SELECT null" so that it does not leave the
parse tree in a goofy state that can cause problems with subsequent code
before the stack has a chance to unwind and report the error.
Ticket [d87336c81c7d0873]

FossilOrigin-Name: fa58aad48a788802b13a819e49f9b8787f713bbe395c46c7295e821c52c81738
 2019-12-25 23:54:21 +00:00
drh
a2d50283db Early detection of database corruption in balance_deeper(). 
FossilOrigin-Name: 61c2233654158e65a3d3baeea947903a919a569fcc4a5b342b2e9a68cec1b6f3
 2019-12-23 18:02:15 +00:00
drh
e6068027ca Cleanup and performance enhancements for mini-lookaside. 
FossilOrigin-Name: 74805668430051032ae9b256c84e252755ee03075fc08293c948675ed40ec280
 2019-12-13 15:48:21 +00:00
drh
ee5b6dd393 Merge fixes from trunk. 
FossilOrigin-Name: 9c471195f6d3e4b00e2d0f909b306a4036352082dca5f016a8eece226e82163d
 2019-12-13 12:14:23 +00:00
drh
0d98598507 *Remove* the macros, not just comment them out. 
FossilOrigin-Name: e5dc2939d3e8694d648fc9b73b1174da5b1349e20fbb9cf1c91268939f308f89
 2019-12-13 11:32:28 +00:00
drh
4ec4dd701f Remove unused macros formerly used to define built-in aggregate functions. 
FossilOrigin-Name: 3ef0d44edd0354cda9b6237f992cb67a2170ee8f1f464b1f38ac36e3a133bc71
 2019-12-13 11:31:47 +00:00
drh
c4938ea2ba Tie up the loose ends in the ExprList size reduction. 
FossilOrigin-Name: 59d0f3afe5249a2a6453fe7bc810c2c7beb896d3800174c7c90f9304c0b1ad88
 2019-12-13 00:49:42 +00:00
drh
cbb9da337e Work toward reducing the incremental size of an ExprList object to 24-byte 
per entry, from 32-bytes (on a 64-bit machine).  This helps the new
mini-lookaside allocator to run better by avoiding excessive reallocs.
The current change mostly works, but still has a few loose ends to tie up.
This check-in is merely a snapshot to save my work.

FossilOrigin-Name: fdda76cfb01bf2b19522ac4558b443634d28a69b0828677c42682b645eae1f3b
 2019-12-12 22:11:33 +00:00
drh
41cee66848 Change the name of the Expr.a.zName field to zEName, so that it has a name 
that is distinct from other fields and variables and is hence easier to
grep for.

FossilOrigin-Name: d3783357f8fa76c42a86f12b214522f0388c37773c36ab8c5ce0623abbc4436a
 2019-12-12 20:22:34 +00:00
drh
0225d819c4 Change the size of a mini-lookaside allocation to a macro (MINI_SZ) rather 
than a magic number (128).

FossilOrigin-Name: 5e1949bca998f3c8c23a8ebf01c7a2e7a2af1fdad43886271e1fe0f25411551d
 2019-12-12 17:17:24 +00:00
numist
115d663c05 More efficient implementation of a lookaside allocator that supports mini (in this case, harcoded to 128B) slots. 
FossilOrigin-Name: b02fdc09c838f355d9efce57f817d6a86153153b4a1f2b763914f4aaa34cb76e
 2019-12-12 02:50:07 +00:00
dan
38096961c7 Avoid infinite recursion in the ALTER TABLE code when a view contains an unused CTE that references, directly or indirectly, the view itself. 
FossilOrigin-Name: 1d2e53a39b87e364685e21de137655b6eee725e4c6d27fc90865072d7c5892b5
 2019-12-09 08:13:43 +00:00
dan
e6dc1e5b70 Fix a problem in ALTER TABLE that could occur if an index, view or trigger in the schema features an expression of the form ((SELECT ...) IN ()) where the SELECT statement uses a CTE. 
FossilOrigin-Name: 7e5ad8e0ab7ee91a5ccb19a9654d6a036233f74d2fdc45f7315feb3d9d035fd4
 2019-12-05 14:31:43 +00:00