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166 Commits

Author SHA1 Message Date
drh
da250ea599 Fix the CSE mechanism so that it takes into account column affinity 
changes that might be imposed by comparison operators. (CVS 4949)

FossilOrigin-Name: 91cc646e2b0c1d62a1989405cc9384a2c22d98d0
 2008-04-01 05:07:14 +00:00
drh
e55cbd7228 Avoid duplicate OP_Column opcodes by remembering prior results. 
This is similar to CSE, but only applies to columns. (CVS 4943)

FossilOrigin-Name: c29ee0fed23dcdbd9dde6b1e42b603100ea2389c
 2008-03-31 23:48:03 +00:00
drh
e14006d0de Modify the {quote: IdxDelete} opcode so that it takes an array of registers rather 
than a record formed using {quote: MakeRecord.}  This avoids a needless packing
and unpacking of the record to be deleted. (CVS 4916)

FossilOrigin-Name: ee381b43563e1b0637ee74389d076dff77deddf9
 2008-03-25 17:23:32 +00:00
danielk1977
cd3e8f7ce9 Use a vdbe memory cell to allocate the space required for vdbe cursors. (CVS 4912) 
FossilOrigin-Name: 047153648155654b0cd70b811935209d2e21776c
 2008-03-25 09:47:35 +00:00
drh
f39d958829 Undefine the "isView" macro when compiling with SQLITE_OMIT_VIEW so that 
the macro does not interfer with subsequent modules in the amalgamation. (CVS 4888)

FossilOrigin-Name: a42caa8f83ce19af1e569c4545ea8b2449152430
 2008-03-19 20:42:13 +00:00
drh
0f35a6b529 When materializing a view for an UPDATE or DELETE make use of the WHERE 
clause to limit the number of rows materialized.  Ticket #2938. (CVS 4782)

FossilOrigin-Name: 5ab71c3a79cac04cb2c576f83a62218d05571006
 2008-02-12 16:52:14 +00:00
drh
ca4241140c Error messages says "no such view" instead of "no such table" when 
trying to DROP a VIEW that does not exist. (CVS 4750)

FossilOrigin-Name: 50815a82e0ec9a5c1399f5fe6ef416434b55a821
 2008-01-25 15:04:48 +00:00
drh
9cbf3425fb Registerification of the VDBE is complete. The operand stack has been 
removed from the code.  All instructions operate out of registers only. (CVS 4718)

FossilOrigin-Name: 706b41b70bd1e2030e6fa44358c38a26c5cf0985
 2008-01-17 16:22:13 +00:00
drh
1db639cef3 Registerification of the WHERE clause logic. (CVS 4716) 
FossilOrigin-Name: b3a141b2b0c09bf3c7704deeade290d71b7c9b77
 2008-01-17 02:36:28 +00:00
drh
b765411161 Continuing work toward converting the VM into a register machine. (CVS 4707) 
FossilOrigin-Name: a6dddebcc5ccbbf3009c9d06163a8b59036331de
 2008-01-12 12:48:07 +00:00
drh
2d401ab8f9 More work toward converting the VM into a register-based machine. (CVS 4704) 
FossilOrigin-Name: 8cbd46517f407b3b1ce187b623db10f00aa415ea
 2008-01-10 23:50:11 +00:00
drh
98757157ee All essential opcodes can now operate out of registers and completely 
avoid the stack.  Many still optionally use the stack to support legacy
code generation, but the stack is not required.  The next step is to
update all code generation to avoid using the stack. (CVS 4700)

FossilOrigin-Name: e3cf1c1c114bcda8fe577beb5ee55b4a651b96db
 2008-01-09 23:04:12 +00:00
drh
3557335658 Registerify the comparison opcodes. (CVS 4697) 
FossilOrigin-Name: 8862ce9ceefba4f5d1ffbd51d824c05f42a58c22
 2008-01-08 23:54:25 +00:00
drh
aa9b8963b5 Progress toward registerification of the constraint checking logic for 
INSERT and UPDATE. (CVS 4693)

FossilOrigin-Name: b9bf509e39f5ac38c2149d2a648f68e5df5ae9e3
 2008-01-08 02:57:55 +00:00
drh
1013c9320d Registerify the SRT_Subroutine destination for SELECT results. (CVS 4690) 
FossilOrigin-Name: 8201f71729c3afbb41764cea3cda65b03150cb0c
 2008-01-06 00:25:21 +00:00
danielk1977
a9d1ccb9b0 First pass at optimizing max()/min() as described in #2853. Some refinements to come. (CVS 4687) 
FossilOrigin-Name: c449e04f1870b1ff726c95c0bf1c6c6a22ca588a
 2008-01-05 17:39:29 +00:00
drh
8558cde1ab Register-ify the OP_AddImm and all casting opcodes. Omit the 
OP_MemIncr opcode. (CVS 4683)

FossilOrigin-Name: 3e8a07dd3cc9921ad39e379576abb0b485a42202
 2008-01-05 05:20:10 +00:00
drh
b1fdb2adea Get rid of OP_Dup, OP_MemStore, OP_MemLoad, and OP_MemMove. Replace 
with OP_Copy, OP_SCopy, and OP_Move.  Add the infrastructure for
operation properties in1, in2, in3, out2, and out3 but do not yet
use any of these. (CVS 4682)

FossilOrigin-Name: cc149eb9ca3c672cc6fea3528353234ac2ed5745
 2008-01-05 04:06:03 +00:00
drh
4c583128bd Implement the out2-prerelease opcode design pattern. (CVS 4681) 
FossilOrigin-Name: fe057a88d0038ac349ea41883b979ceba6ae410a
 2008-01-04 22:01:03 +00:00
danielk1977
287fb61c6b Some modifications to insert.c to work without using the stack. (CVS 4678) 
FossilOrigin-Name: d9ac6beef538376d0ea0a1daa95cf1dfe36143cf
 2008-01-04 19:10:28 +00:00
danielk1977
dd2fb29be8 Modify FifoRead and FifoWrite to work exclusively with memory cells. (CVS 4676) 
FossilOrigin-Name: 2c913908a47e7ace7d964067e3566d232ee2d494
 2008-01-04 13:57:26 +00:00
danielk1977
96cb76fc7a Modify the code generated for a DELETE to use registers instead of the vdbe stack. (CVS 4675) 
FossilOrigin-Name: 173f281334d340290e1978abea5d1ea804141910
 2008-01-04 13:24:28 +00:00
drh
0a07c107a6 Registers (aka memory cells) in the VM are now numbered starting with 1 
instead of 0.  A register number of 0 means "no such register". (CVS 4669)

FossilOrigin-Name: 0b849805c3a0f562d50623f406279b400d335639
 2008-01-03 18:03:08 +00:00
danielk1977
2a339ff677 Modify OP_VUpdate to read arguments from a range of memory cells instead of from the stack. (CVS 4668) 
FossilOrigin-Name: 955b15a020e9ea6401fe03a36f5139a03ea80b8a
 2008-01-03 17:31:44 +00:00
danielk1977
1f4aa337cd Change the OP_Insert opcode to read the key and data to insert from memory cells, not the stack. (CVS 4666) 
FossilOrigin-Name: 46501f490a5f5577ea31c758df749e02c7c65f39
 2008-01-03 09:51:55 +00:00
danielk1977
207872a488 Change OP_OpenRead and OP_OpenWrite so that the database number is read from the P3 operand, not the stack. (CVS 4663) 
FossilOrigin-Name: 35da261daf602b1e938f05bbad1ff99213d9f4b9
 2008-01-03 07:54:23 +00:00
drh
66a5167b47 Refactoring the VM. The P3 parameter is changed to P4. A P5 parameter is 
added (though not currently used.)  Add routines sqlite3VdbeAddOpX() where
X is one of 0, 1, 2, 3, or 4. (CVS 4660)

FossilOrigin-Name: 027875e4d4c4bd7686dc880c6917a968049b2fec
 2008-01-03 00:01:23 +00:00
danielk1977
6c8c8ce0e2 Combine the eDest and iParm arguments to sqlite3Select() into a single type - "SelectDest". (CVS 4657) 
FossilOrigin-Name: 86dcdfe6d7d629618ccb3c3ff0ca09f2da2d06c7
 2008-01-02 16:27:09 +00:00
drh
2f6751f91e Remove a surplus OP_Close from delete.c. Fixes a problem with (4654). (CVS 4655) 
FossilOrigin-Name: 03cc91b3b0ff9be192532f8a404b3c7b827e1449
 2008-01-02 13:05:51 +00:00
danielk1977
e448dc4abf Take advantage of the fact that b-tree cursors need not be closed while other cursors modify their tables to simplify trigger program generation code. (CVS 4654) 
FossilOrigin-Name: f1966a8a47fca85f7862c0797a527ab01ac8b0c1
 2008-01-02 11:50:51 +00:00
drh
d4e70ebd6f Begin setting a foundation on which to convert the VM from a stack-based 
to a register-based machine.  Everything is still mostly stack based with
this check-in.  This change merely begins adding infrastructure to support
a register-based architecture. (CVS 4652)

FossilOrigin-Name: 051ec01f2799e095516015f2ef0180e50fac387c
 2008-01-02 00:34:36 +00:00
danielk1977
8f2c54e6e2 Optimize trigger compilation to avoid populating the OLD.* and NEW.* pseudo-tables with data that will never be used. Some testing to come. (CVS 4651) 
FossilOrigin-Name: e08a33ed7255c22ce2805363f44a1d7770acb2dd
 2008-01-01 19:02:09 +00:00
danielk1977
997a904016 Try to find some more stack leaks by adding OP_StackDepth to loops in DML statements. None were found. (CVS 4617) 
FossilOrigin-Name: 12c3029b1edcff4435177c709fb2584323f8c515
 2007-12-12 17:42:53 +00:00
danielk1977
6811e399ff Remove a couple of lines in delete.c that weren't doing anything. (CVS 4616) 
FossilOrigin-Name: 86332c79aedb64842e589ff941c637f8e1aabd41
 2007-12-12 17:19:27 +00:00
danielk1977
967573d56a Fix some problems similar to #2832, but caused by triggers instead of an OR REPLACE clause. (CVS 4615) 
FossilOrigin-Name: ee98ae17187296f7b0181c3d4d2b942d5cd4bc8f
 2007-12-12 16:06:23 +00:00
drh
95c0775484 Fix the code generation for UPDATE and DELETE so that 
BEFORE triggers that use RAISE(IGNORE) do not leave extra
values on the stack.  Ticket #2767 (CVS 4535)

FossilOrigin-Name: 3391f4139ccfe62cc27739a06567c422ddae9c69
 2007-11-11 18:36:34 +00:00
drh
174357527a Half-way through a major refactoring of the memory allocation. 
I have not even attempted to compile so I am certain there are
countless errors. (CVS 4231)

FossilOrigin-Name: deb7ecd65f7b83eaf0ba610eeef3b0ede61db1c3
 2007-08-16 04:30:38 +00:00
danielk1977
a04a34ff1a Ensure sqlite3_finalize() can be called from within the xDisconnect() method of virtual tables. (CVS 3845) 
FossilOrigin-Name: 8d6c3bfc4dfdd380a2915d778e256d3e49d22d72
 2007-04-16 15:06:25 +00:00
drh
53a677749f Change the coding of PRAGMA count_changes so that it uses memory cells 
of the VM rather than the stack, to avoid problems with leftovers on the
stack interfering with other operations.  Ticket #2217. (CVS 3632)

FossilOrigin-Name: 2bd4b62a20219f939ac2ac22440dc7fc0449f766
 2007-02-07 01:06:52 +00:00
danielk1977
b3d24bf8ee Add tests to ensure an INSERT/UPDATE/DELETE immediately after virtual table construction does not fail. (CVS 3270) 
FossilOrigin-Name: 144d0eb13aed4507e93edec781b1819a068f4a70
 2006-06-19 03:05:10 +00:00
danielk1977
f9e7dda7ef Add code to invoke the virtual table transaction interface. Untested at this point. (CVS 3261) 
FossilOrigin-Name: 6125140228e09cad2029a48e92aa0123d3daecfb
 2006-06-16 16:08:53 +00:00
danielk1977
d1ab1ba5ed Add void* argument to sqlite3_create_module to replace sqlite3_module.pAux. (CVS 3251) 
FossilOrigin-Name: 470a3a0b20775be1226fb4d477c798d8da2d5708
 2006-06-15 04:28:13 +00:00
drh
4cbdda9e27 Added code to INSERT, DELETE and UPDATE virtual tables. The new code is 
mostly untested. (CVS 3248)

FossilOrigin-Name: 32c97b884b104d120db3c0a87f5eab28f36851f8
 2006-06-14 19:00:20 +00:00
drh
b9bb7c187e Progress toward CREATE VIRTUAL TABLE. Still not even close to working... (CVS 3211) 
FossilOrigin-Name: 898ec36b4102aaa03979f8f5c510936e57e2ae48
 2006-06-11 23:41:55 +00:00
drh
74161705f1 Remove unused parameters on internal APIs. Suppress warnings from 
CodeWarrior. (CVS 3110)

FossilOrigin-Name: 4b22e4b847f8d5c29830baea541194ef3a0c4811
 2006-02-24 02:53:49 +00:00
danielk1977
955de52c9c Add the column_origin_name() etc. APIs. (CVS 3069) 
FossilOrigin-Name: 82f502cdc1fead3bf7e3190d5c9db3aee6919ed4
 2006-02-10 02:27:42 +00:00
danielk1977
f011300000 Rename some variables to avoid hiding others. Also add "static" to two function signatures that were missing it. (CVS 3024) 
FossilOrigin-Name: d86f18a4277ebffb644ba2e574e0b697c8bbf8e4
 2006-01-24 12:09:17 +00:00
danielk1977
9e12800dec Use a global variable protected by a mutex instead of thread-specific-data to record malloc() failures. (CVS 2972) 
FossilOrigin-Name: ac090f2ab3b5a792c2fdf897e10060f263e0d408
 2006-01-18 16:51:35 +00:00
drh
6f7adc8a80 Automatically deallocate thread-specific data when it is no longer 
being used.  Ticket #1601.  Also implemented the suggestion of
ticket #1603. Memory management is now off by default at compile-time.
The sqlite3_enable_memory_management() API has been removed. (CVS 2919)

FossilOrigin-Name: 5d9c6aa964305c3f36741ff0058da5b5f3ce0d24
 2006-01-11 21:41:20 +00:00
danielk1977
b3bf556ef6 Store collation sequence names instead of pointers in sharable schema data structures. (CVS 2904) 
FossilOrigin-Name: 0f0213be4d064b3d24e31ff93ec16f6862003d26
 2006-01-10 17:58:23 +00:00