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378bf82e2bc09734b8c5869f9b148efe37d29527
Commit Graph

734 Commits

Author SHA1 Message Date
drh
788d55aa77 Begin adding upsert logic. This is an incremental check-in. 
FossilOrigin-Name: 809696434097e62e8ef486c7478b5eb62c0cf1342522a5584939fade82821410
 2018-04-13 01:15:09 +00:00
drh
46d2e5c35a Add the Upsert object for holding upsert clause information. 
FossilOrigin-Name: d83eaed539b274c2abd650d07522f491865d4917acbb64d05d01b3ba5c3cd446
 2018-04-12 13:15:43 +00:00
drh
2c2e844a36 More complete parsing of UPSERT, including UPSERT within a trigger. 
The sqlite3Insert() logic to actually perform the UPSERT is not yet
implemented, however.

FossilOrigin-Name: 5cc2a5a315a2f26b392811de45b3dc352873a173c2c6c65f37ce2e5f88a71cd2
 2018-04-07 15:04:05 +00:00
drh
c8abbc11cd Avoid writing the sqlite_sequence table when it has not actually changed. 
FossilOrigin-Name: 3e3849a9d1a06673e6c713a42194f5da339fbf6533fa418c38f63d09bc045867
 2018-03-16 18:46:30 +00:00
drh
4d795ef7e4 In the constraint resolution logic, be careful not to cache column values 
in registers whose initialization might be bypassed by an OP_NoConflict opcode.
Fix for ticket [dc3f932f5a147771] reported by OSSFuzz.

FossilOrigin-Name: 2846458af5d029a8e4fdcc8f50873a44e57897bbfe6aee8a23a01ffc34c5579f
 2018-01-02 18:11:11 +00:00
drh
8c0833fb21 In the parse tree, combine LIMIT and OFFSET into a single expression rooted 
on a TK_LIMIT node, for a small code size reduction and performance increase,
and a reduction in code complexity.

FossilOrigin-Name: 3925facd942c9df663f9b29b1e6f94f6be14af8c2b99eb691bfc836b4c220826
 2017-11-14 23:48:23 +00:00
drh
9d9c41e25e Remove unnecessary NEVER() and ALWAYS() conditionals. 
FossilOrigin-Name: 1c80c75d4be2f3d44fb18bb4c07eccac2aba79b688215a741317dfc47dc7c2ce
 2017-10-31 03:40:15 +00:00
drh
ce2c482e5a Remove an unused variable from sqlite3Insert() and fix harmless 
compiler warnings associated with -DSQLITE_MUTATION_TEST.

FossilOrigin-Name: 7be760e907274131bcd4acfaff9e72c9c59a05e7d411db3d9afe690fe0d64b4b
 2017-10-03 17:17:34 +00:00
drh
86b40dfd33 Split the OP_Last opcode into OP_Last and OP_SeekEnd. Use OP_SeekEnd to 
position a cursor prior to appending.  Ticket [cb91bf4290c211d].

FossilOrigin-Name: 3e02474c7bbe16891a7cfc8771cf72f64cd2c0692779037982d7d307512a4f23
 2017-08-01 19:53:43 +00:00
drh
8257aa8dbe Add the new sqlite3.mDbFlags field. Factor out bits of sqlite3.flags that 
do not interact with PRAGMA statements into sqlite3.mDbFlags.

FossilOrigin-Name: 3808a00f06d372cc531da039d97bd974e4a6576a30cf63bf562f83f186b313b3
 2017-07-26 19:59:13 +00:00
drh
6e97f8ec84 Combine the Parse.ckBase and Parse.iSelfTab fields into just Parse.iSelfTab. 
This fixes a problem with date/time functions in check-constraints.  Add
some test cases for date/time functions in index expressions and check
constraints.

FossilOrigin-Name: 22eda0985ecd1f456c073e6ad735a8417f3ff1fb6aaad1640e1cec01e50c51d8
 2017-07-20 13:17:08 +00:00
dan
5aa550cf3b Consider the values bound to SQL variables when determining whether or not a 
partial index may be used.

FossilOrigin-Name: 7b59c353b805c64689b4ae9df347705acbb5f116346ad77af8ce087da7893747
 2017-06-24 18:10:29 +00:00
drh
4c88348729 Initialize a variable to zero to prevent an (incorrect) compiler warning of 
it potentially being uninitialized.

FossilOrigin-Name: 65182ce041b30cd0193b958eca975b720fe5200a868baba1e633e49433d86813
 2017-06-03 20:09:37 +00:00
drh
d5bdd5effb Remove a completely unnecessary memset() from the INSERT code generator. 
FossilOrigin-Name: 7d58836b9db1293a3a6581af4358b7c91a588efd5c9b2df384803f3855ff87a8
 2017-05-31 13:27:15 +00:00
dan
a77edc69ee Remove an invalid assert() statement failing when VACUUMing a database that 
contains an index on a column explicitly declared "COLLATE BINARY".

FossilOrigin-Name: 9f2e04d3c3526b5ff60d941aa6d5446f602cab37cb93972937f39eefabd6868d
 2017-03-23 17:03:35 +00:00
drh
44266ec651 Always use the IsVirtual() macro to determine if a Table object is a virtual 
table.  Slightly smaller and faster code.

FossilOrigin-Name: 6affb1c89d87288cad87dde5a533832cdf06b8aa
 2017-02-16 14:48:08 +00:00
drh
7e4acf7b44 Enable the SQLITE_ENABLE_NULL_TRIM option for WITHOUT ROWID tables. 
FossilOrigin-Name: 54836270c9c0bfa5910f7ad74ec238b9d7ddee5f
 2017-02-14 20:00:16 +00:00
dan
cb9a364390 Experimental change to invoke the preupdate hook when WITHOUT ROWID tables are 
written.

FossilOrigin-Name: 856f8604c59c8fdd9bfb7d86fc0e212f091ab49a
 2017-01-30 19:44:53 +00:00
drh
d447dced96 Trim NULL values off the end of records when the SQLITE_ENABLE_TRIM_NULLS 
compile-time option is used.  Increase the size of the P5 operand to 16 bits.
Fix a problem with short records in the sessions extension.

FossilOrigin-Name: 4801bd59a01dcc11a3eb9e776e7599b36f162d2a
 2017-01-25 20:55:11 +00:00
drh
585ce1923c Experimental enhancement to automatically trim NULL values from the end of 
records, for a reduced disk footprint.  This change also involves increasing
the P5 operand from 8 to 16 bits.

FossilOrigin-Name: 118ded403b95050b74ae2b03919c43d614094a32
 2017-01-25 14:58:27 +00:00
dan
f91c1318f4 Changes to allow some multi-row UPDATE statements to avoid the two-pass 
approach.

FossilOrigin-Name: 46db23ccd116ce5b9d949f9293be8a2818411b46
 2017-01-10 20:04:38 +00:00
drh
e7b554d615 Modify the OP_RowData opcode so that when P3!=0 it is allowed to hold an 
ephemeral copy of the content.  This avoids unnecessary memcpy() operations
in the xfer-optimization and VACUUM.

FossilOrigin-Name: 6e106acd74da3baa5c308a76443d2f0a7c904e5e
 2017-01-09 15:44:25 +00:00
drh
68116939eb Improvements to the iIdxNoSeek optimization of sqlite3GenerateRowDelete() 
so that it is automatically disabled for BEFORE triggers but works in all
other cases.

FossilOrigin-Name: 3178ec4c27efc4ff84bcd17ddb17ec50a6ac96b3
 2017-01-07 14:47:03 +00:00
drh
4cef5b1c81 Critical fix to the previous check-in so that it works when there are 
BEFORE triggers that move the cursor before the OP_Delete has a chance to
be applied.

FossilOrigin-Name: db2c0960ffb3b396b20e0441d3edb812254c82bc
 2017-01-07 14:26:28 +00:00
drh
ad1d9a8707 Avoid an unnecessary btree seek while deleting an index entry due to a conflict 
on a REPLACE operation.

FossilOrigin-Name: f0495c5133d0dc04d63521136d6b9ca440792cdf
 2017-01-07 03:26:50 +00:00
dan
f9a12a106b Fix some problems with foreign key processing within REPLACE ops on WITHOUT 
ROWID tables with no triggers or auxiliary indexes.

FossilOrigin-Name: c1220b1af62629d7fc2178512786d613cd7ea711
 2017-01-05 06:57:42 +00:00
drh
801f55d837 Improved the comment on the block of code the provides the performance 
optimization originally added by check-in [925840cfdb].  The original
check-in omitted condition 4, which was the cause of bug [30027b613b].

FossilOrigin-Name: c6506b82aa6583ccde5f673c79526d5f3920b67a
 2017-01-04 22:02:56 +00:00
dan
4e1f0efb4d Possible fix for 30027b61. There may still be problems surrounding foreign key 
processing.

FossilOrigin-Name: 71ccb1f4c490fdebc7008e884384e7809b849742
 2017-01-04 20:13:51 +00:00
drh
2700acaacd More changes to take advantage of the sqlite3VdbeAppendP4() method. 
FossilOrigin-Name: 83bc5e40af9b20afeed008bf3e2669b7ac9e2dc8
 2016-12-08 01:38:24 +00:00
drh
f14b7fb73b Add the sqlite3VdbeAppendP4() method for adding P4 content to the most recently 
coded instruction.

FossilOrigin-Name: 28883e8f3e92a8015fb5f6c8ae8580833931543d
 2016-12-07 21:35:55 +00:00
drh
9057fc7c7f Remove the OP_RowKey opcode. Use OP_RowData in its place. 
FossilOrigin-Name: 6ac7b07a4aff2e1a9031289e3dafdb9ac0071c24
 2016-11-25 19:32:32 +00:00
drh
60ffc80756 Remove unnecessary OP_Close opcodes at the end of INSERT operations, resulting 
in smaller and faster code.

FossilOrigin-Name: abeddb6d5a4040e1d0a87a4f32ad79794ba0842b
 2016-11-21 21:33:46 +00:00
drh
c10b9dac84 Fix harmless compiler warnings. 
FossilOrigin-Name: b3b7b42d9a4a0e7e2be8b2933328a7bec2f49a81
 2016-11-20 17:59:59 +00:00
drh
c9b9deaee2 Make the VACUUM command about 9% faster by avoiding unnecessary calls 
to sqlite3BtreeMovetoUnpacked() while copying rowid tables.

FossilOrigin-Name: 5ed0bd387699a0f3b477d4f3cfcb460a6a44cb84
 2016-11-15 02:46:39 +00:00
drh
2adb878b1f Avoid unnecessary calls to sqlite3ExprCacheAffinityChange() when generating 
OP_MakeRecord opcodes that do not change any register affinities.

FossilOrigin-Name: e211c579b2f092e3283edd5fb9add7c5183bac35
 2016-11-14 15:28:56 +00:00
drh
d95ef5cb5a Remove obselete and unused logic in the update code generator. 
Fix the sqlite3BtreeMovetoUnpacked() routine so that it remembers the
rowid of the row that it landed on.

FossilOrigin-Name: 1a587d72f981cb7064cfd8916a52a83ad9ba6074
 2016-11-11 18:19:05 +00:00
drh
c6c9e158c5 When doing a REPLACE on a WITHOUT ROWID table with no secondary indexes, 
bypass the OP_NoConflict/OP_Delete sequence and directly overwrite any
preexisting row, for a performance increase.

FossilOrigin-Name: f7041cbb63b912f9ecad538804b6f2383efbec4e
 2016-11-10 17:01:36 +00:00
drh
bf2f5739c9 Remove C++ style comments. No code changes. 
FossilOrigin-Name: 42f8aa6231bf4ed74bebdc85aa79d23dc20b3c14
 2016-11-10 16:07:43 +00:00
drh
2c4dfc3095 Add the unpacked key fields to OP_IdxInsert for INSERT and UPDATE statements. 
FossilOrigin-Name: 67602e40f122cbb6354048a64c5d3a72b2855ec7
 2016-11-10 14:24:04 +00:00
drh
7405fa745e Fix a simple comment typo. No changes to code. 
FossilOrigin-Name: 51d0aed8d63d0710e4aa8925ff18cf3c45dc9e42
 2016-11-09 16:03:36 +00:00
drh
9b4eaebc68 Enhance the OP_IdxInsert opcode to optionally accept unpacked key material. 
FossilOrigin-Name: 89d958abbac45f2ca5954080cd9e74ec9a07ebb2
 2016-11-09 00:10:33 +00:00
dan
3b908d41a0 Avoid superfluous cursor seeks in "INSERT OR REPLACE" statements. 
FossilOrigin-Name: bec5b6d4d083556d111a89186b4f7b35b5e7cebf
 2016-11-08 19:22:32 +00:00
drh
1dd518cfcd Make sure the sqlite_sequence table is updated when an optional xfer 
optimization is used.  Fix for ticket [7b3328086a5c1].

FossilOrigin-Name: 81e4d4f897553f6fee540a38c3e83ceac5ba9b78
 2016-10-03 02:59:33 +00:00
drh
a0daa751f8 Fix SQLITE_OMIT_AUTHORIZATION so that it compiles cleanly. 
FossilOrigin-Name: a3e3b3e1c57178ccd38fc7375ec1de8e8ae45372
 2016-09-16 11:53:10 +00:00
dan
61441c3493 Fix a problem in internal function sqlite3OpenTableAndIndices causing an operand of an unrelated VM instruction to be overwritten. Fix for [ef360601]. 
FossilOrigin-Name: 7090147903337864d54ecfb2cd84a3f823973167
 2016-08-26 12:00:50 +00:00
drh
9ef5e7708a Add the capability to VACUUM an attached database by specifying the schema 
name as an argument to the VACUUM command.  Since version 2.0, VACUUM has
accepted an argument which was silently ignored.  Now it has meaning.

FossilOrigin-Name: 29d63059b4d2bb612523ac55ebfef040d054a64f
 2016-08-19 14:20:56 +00:00
drh
69c338263a Rename the Db.zName field to Db.zDbSName to make it more descriptive and to 
distinguish it from all of the other "zName" variables scattered throughout
the code.

FossilOrigin-Name: 92a22f01343a898455fd61c3b8e7d7c954f5b569
 2016-08-18 14:33:11 +00:00
drh
2606aca80f Merge recent enhancements from trunk. Default page size is 4096. Writes 
to statement journals are avoided.

FossilOrigin-Name: 456df3365e2df60e34762f2024bb551538b3f72b
 2016-03-04 16:42:43 +00:00
drh
94fa9c414a Eliminate the need for the Column.zDflt (using Column.pDflt instead) to reduce 
the amount of memory needed to hold the schema.

FossilOrigin-Name: d8c94a46dfa94930732c2de2aa79675c5087d36e
 2016-02-27 21:16:04 +00:00
drh
d8b7d6e44c Merge the changes for the 3.11.0 release candidate from trunk. 
FossilOrigin-Name: 4d7a802e73ef0352f840bc8d74c560afb7666ff7
 2016-02-13 14:07:56 +00:00