Unless the destination table is completely empty, disable the xfer optimization for WITHOUT ROWID tables.

FossilOrigin-Name: 3877c9f50582b51817dcf3cd75d836891a34e590
This commit is contained in:
dan 2013-11-05 16:39:31 +00:00
parent 7b3d1860af
commit 427ebba10c
5 changed files with 91 additions and 45 deletions

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@ -1,5 +1,5 @@
C Updates\sto\sthe\sbackcompat.test\stest\sscript\sso\sthat\sit\sworks\swith\sreally\sold\s(3.6.*)\sversions.
D 2013-11-05T15:02:39.443
C Unless\sthe\sdestination\stable\sis\scompletely\sempty,\sdisable\sthe\sxfer\soptimization\sfor\sWITHOUT\sROWID\stables.
D 2013-11-05T16:39:31.103
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in 0522b53cdc1fcfc18f3a98e0246add129136c654
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@ -182,7 +182,7 @@ F src/global.c 5caf4deab621abb45b4c607aad1bd21c20aac759
F src/hash.c ac3470bbf1ca4ae4e306a8ecb0fdf1731810ffe4
F src/hash.h 8890a25af81fb85a9ad7790d32eedab4b994da22
F src/hwtime.h d32741c8f4df852c7d959236615444e2b1063b08
F src/insert.c 37bbaf90c077a8a8a6a5831d66c223b66e8272ae
F src/insert.c 7559252147d3aad55951ecd5fadf8350729cb901
F src/journal.c b4124532212b6952f42eb2c12fa3c25701d8ba8d
F src/legacy.c 0df0b1550b9cc1f58229644735e317ac89131f12
F src/lempar.c cdf0a000315332fc9b50b62f3b5e22e080a0952b
@ -831,7 +831,7 @@ F test/tclsqlite.test 37a61c2da7e3bfe3b8c1a2867199f6b860df5d43
F test/tempdb.test 19d0f66e2e3eeffd68661a11c83ba5e6ace9128c
F test/temptable.test d2c9b87a54147161bcd1822e30c1d1cd891e5b30
F test/temptrigger.test 0a48d94222d50e6e50d72ac103606c4f8e7cbb81
F test/tester.tcl 901258f2825cb712be4093bcd9317082d26a9901
F test/tester.tcl b95c4e385003665c729bed9dbd385c42c80daeef
F test/thread001.test 9f22fd3525a307ff42a326b6bc7b0465be1745a5
F test/thread002.test e630504f8a06c00bf8bbe68528774dd96aeb2e58
F test/thread003.test ee4c9efc3b86a6a2767516a37bd64251272560a7
@ -1078,7 +1078,7 @@ F test/wherelimit.test 5e9fd41e79bb2b2d588ed999d641d9c965619b31
F test/wild001.test bca33f499866f04c24510d74baf1e578d4e44b1c
F test/win32lock.test 7a6bd73a5dcdee39b5bb93e92395e1773a194361
F test/win32longpath.test e2aafc07e6990fe86c69be22a3d1a0e210cd329b
F test/without_rowid1.test 0b349aa31554afcee213ccabf4d259f4ff13a86a
F test/without_rowid1.test ba137a86e4dcd23c72b6fce8ee4cee98cbf27784
F test/without_rowid2.test af260339f79d13cb220288b67cd287fbcf81ad99
F test/without_rowid3.test eac3d5c8a1924725b58503a368f2cbd24fd6c8a0
F test/without_rowid4.test 4e08bcbaee0399f35d58b5581881e7a6243d458a
@ -1133,7 +1133,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
P 99b1fa4b1664a79eae1dddce2b9a848384cdb1d7
R 9237f8c5de7d66fb8a3d16e086790bd9
P ace7e7b64261aeabc9525d5d0cfebe0275c9ddf5
R 69c353523dfa3ba1b61ddb6b7043eeaf
U dan
Z e1e8e8d809370991b491bb9af478a65e
Z b3aef9b0bbf6405eadeabac5f2f1c980

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@ -1 +1 @@
ace7e7b64261aeabc9525d5d0cfebe0275c9ddf5
3877c9f50582b51817dcf3cd75d836891a34e590

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@ -1897,9 +1897,6 @@ static int xferOptimization(
if( pDest->iPKey!=pSrc->iPKey ){
return 0; /* Both tables must have the same INTEGER PRIMARY KEY */
}
if( HasRowid(pDest)!=HasRowid(pSrc) ){
return 0; /* source and destination must both be WITHOUT ROWID or not */
}
for(i=0; i<pDest->nCol; i++){
if( pDest->aCol[i].affinity!=pSrc->aCol[i].affinity ){
return 0; /* Affinity must be the same on all columns */
@ -1958,32 +1955,31 @@ static int xferOptimization(
regAutoinc = autoIncBegin(pParse, iDbDest, pDest);
regData = sqlite3GetTempReg(pParse);
regRowid = sqlite3GetTempReg(pParse);
sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite);
assert( HasRowid(pDest) || destHasUniqueIdx );
if( (pDest->iPKey<0 && pDest->pIndex!=0) /* (1) */
|| destHasUniqueIdx /* (2) */
|| (onError!=OE_Abort && onError!=OE_Rollback) /* (3) */
){
/* In some circumstances, we are able to run the xfer optimization
** only if the destination table is initially empty. This code makes
** that determination. Conditions under which the destination must
** be empty:
**
** (1) There is no INTEGER PRIMARY KEY but there are indices.
** (If the destination is not initially empty, the rowid fields
** of index entries might need to change.)
**
** (2) The destination has a unique index. (The xfer optimization
** is unable to test uniqueness.)
**
** (3) onError is something other than OE_Abort and OE_Rollback.
*/
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0);
emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0);
sqlite3VdbeJumpHere(v, addr1);
}
if( HasRowid(pSrc) ){
sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite);
if( (pDest->iPKey<0 && pDest->pIndex!=0) /* (1) */
|| destHasUniqueIdx /* (2) */
|| (onError!=OE_Abort && onError!=OE_Rollback) /* (3) */
){
/* In some circumstances, we are able to run the xfer optimization
** only if the destination table is initially empty. This code makes
** that determination. Conditions under which the destination must
** be empty:
**
** (1) There is no INTEGER PRIMARY KEY but there are indices.
** (If the destination is not initially empty, the rowid fields
** of index entries might need to change.)
**
** (2) The destination has a unique index. (The xfer optimization
** is unable to test uniqueness.)
**
** (3) onError is something other than OE_Abort and OE_Rollback.
*/
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0);
emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0);
sqlite3VdbeJumpHere(v, addr1);
}else{
emptyDestTest = 0;
}
sqlite3OpenTable(pParse, iSrc, iDbSrc, pSrc, OP_OpenRead);
emptySrcTest = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0);
if( pDest->iPKey>=0 ){

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@ -1028,14 +1028,15 @@ proc explain_i {sql {db db}} {
puts "addr opcode p1 p2 p3 p4 p5 #"
puts "---- ------------ ------ ------ ------ ---------------- -- -"
set addrTail 0
set bSeenGoto 0
$db eval "explain $sql" {} {
set x($addr) 0
set op($addr) $opcode
if {$opcode == "Goto" && $addrTail==0} {
set addrTail $p2
if {$opcode == "Goto" && ($bSeenGoto==0 || ($p2 > $addr+10))} {
set linebreak($p2) 1
set bSeenGoto 1
}
if {$opcode == "Next"} {
@ -1049,20 +1050,20 @@ proc explain_i {sql {db db}} {
incr x($i) 2
}
}
if {$opcode == "Halt" && $comment == "End of coroutine"} {
set linebreak([expr $addr+1]) 1
}
}
$db eval "explain $sql" {} {
if {$addr == $addrTail} {
if {[info exists linebreak($addr)]} {
puts ""
}
set I [string repeat " " $x($addr)]
puts [format {%-4d %s%-12.12s %-6d %-6d %-6d % -17s %s %s} \
$addr $I $opcode $p1 $p2 $p3 $p4 $p5 $comment
]
if {$opcode == "Halt" && $comment == "End of coroutine"} {
puts ""
}
}
puts "---- ------------ ------ ------ ------ ---------------- -- -"
}

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@ -153,6 +153,55 @@ do_execsql_test 2.4.2 {
SELECT * FROM t6 ORDER BY c;
} {ABC def ghi ABC def ghi}
#-------------------------------------------------------------------------
# Unless the destination table is completely empty, the xfer optimization
# is disabled for WITHOUT ROWID tables. The following tests check for
# some problems that might occur if this were not the case.
#
reset_db
do_execsql_test 3.1.1 {
CREATE TABLE t1(a, b, PRIMARY KEY(a)) WITHOUT ROWID;
CREATE UNIQUE INDEX i1 ON t1(b);
CREATE TABLE t2(a, b, PRIMARY KEY(a)) WITHOUT ROWID;
CREATE UNIQUE INDEX i2 ON t2(b);
INSERT INTO t1 VALUES('one', 'two');
INSERT INTO t2 VALUES('three', 'two');
}
do_execsql_test 3.1.2 {
INSERT OR REPLACE INTO t1 SELECT * FROM t2;
SELECT * FROM t1;
} {three two}
do_execsql_test 3.1.3 {
DELETE FROM t1;
INSERT INTO t1 SELECT * FROM t2;
SELECT * FROM t1;
} {three two}
do_catchsql_test 3.1.4 {
INSERT INTO t2 VALUES('four', 'four');
INSERT INTO t2 VALUES('six', 'two');
INSERT INTO t1 SELECT * FROM t2;
} {1 {UNIQUE constraint failed: t2.b}}
do_execsql_test 3.1.5 {
CREATE TABLE t3(a PRIMARY KEY);
CREATE TABLE t4(a PRIMARY KEY);
INSERT INTO t4 VALUES('i');
INSERT INTO t4 VALUES('ii');
INSERT INTO t4 VALUES('iii');
INSERT INTO t3 SELECT * FROM t4;
SELECT * FROM t3;
} {i ii iii}
explain_i {
INSERT INTO t3 SELECT * FROM t4;
}
finish_test