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![Page 1: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/1.jpg)
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![Page 3: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/3.jpg)
IBM DB2 9.7Linux f"UNIX fM Windows f
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6 Visual Explain LL
![Page 15: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/15.jpg)
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8 Visual Explain LL
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q! SQL r XQuery odPwPD3FE"
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10 Visual Explain LL
![Page 19: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/19.jpg)
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![Page 20: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/20.jpg)
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12 Visual Explain LL
![Page 21: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/21.jpg)
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14 Visual Explain LL
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16 Visual Explain LL
![Page 25: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/25.jpg)
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18 Visual Explain LL
![Page 27: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/27.jpg)
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20 Visual Explain LL
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22 Visual Explain LL
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24 Visual Explain LL
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26 Visual Explain LL
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28 Visual Explain LL
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30 Visual Explain LL
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32 Visual Explain LL
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34 Visual Explain LL
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36 Visual Explain LL
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38 Visual Explain LL
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40 Visual Explain LL
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![Page 50: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/50.jpg)
"b,ZCJ=8<DW?,TZ STAFF m,H0Dw}(hMCfQ|D*vw
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vnbDCJ$w#
42 Visual Explain LL
![Page 51: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/51.jpg)
2. KCJ=8D'{gN?
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Z 4 B ZVx}]b73PDxCJ=8 43
![Page 52: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/52.jpg)
44 Visual Explain LL
![Page 53: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/53.jpg)
Z 2 ?V N<
© Copyright IBM Corp. 2002, 2009 45
![Page 54: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/54.jpg)
46 Visual Explain LL
![Page 55: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/55.jpg)
Z 5 B Visual Explain Kc{
Kc{GXkT}]4PDYw,r_G4P SQL r XQuery odDCJ=814T
mrw}Ddv#>Z|,IvVZCJ=8<PDKc{Pm#
CMPEXP Kc{KKc{vJCZwT==#
Kc{{F:CMPEXP
yw:*C=Y1rnUa{,h*Fcmo=#
DELETE Kc{KKc{m>SmP>}P#
Kc{{:DELETE
m>:TmPPD>}#
KKc{m>;vXhDYw#*5MCJ=8DI>,IQ"b&/PZ(e*>
}DP/Dd{Kc{(}g,(hM,S)O#
T\(i:
v t}SmP>}yPDP,G4I<G9C DROP TABLE odr LOAD REPLACE
|n#
EISCAN Kc{KKc{(hC'(eDw}4zI+rDPw#
Kc{{:EISCAN
m>:K(h9CC'a)D6'zI/}PD`vt//#9u~#
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v P1,}]b|BI\}pw};VN,Sx<B}`Dw}3#bI(}>}"
XB4(w}r_Xiw}4|}#
v g{3FE";GnBD,G49C runstats |nTdxP|B#
© Copyright IBM Corp. 2002, 2009 47
![Page 56: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/56.jpg)
FETCHKKc{m>SmPCfP#
Kc{{:FETCH
m>:9CX(DPj6(RID)SmPCfP#
T\(i:
v )9w}|T|(yCfDP,Sx;XCJ}]3#
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Kc{{:FILTER
m>:#t=JD&C,Tcy]=Ja)Du~T}]xP}K#
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v 7#9CKvlwzh*D}]D=J#}g,7#=JD!qT5m>zk*5
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48 Visual Explain LL
![Page 57: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/57.jpg)
m>:y]8(Pr/}D+25TPxPVi#*zz;i5rT//}s5,K
YwGXhD#
g{48( GROUP BY P,G4tZ SELECT PmPP[//},G4TI9C
GRPBY Kc{,8>14P[/1,+{vmw*%vi&m#
T\(i:
v KKc{m>;vXhDYw#*5MCJ=8I>,I+"b&/PZ(e*V
iDP/Dd{Kc{(g(hM,S)O#
v *a_|,%v[//}x^ GROUP BY SdD SELECT odDT\,I"TB
PYw:
– TZ MIN(C) [//},4( C D}rw}#
– TZ MAX(C) [//},4( C D5rw}#
HSJOIN Kc{KKc{m>mPDX(PQ-}"P,S#
Kc{{:HSJOIN
m>:;v"P,S,ZC,S==B,TmPD^(PxP"P&m,TJm1S
,S,x;C$HTb)mDZ]Er#
1 FROM SdP}CK`vm1,,SGXhD#;*P;v,S=J9=v;,m
PDP`H,r"P,SMI\5V#b),S=Jh*_Pj+`,D}]`M#
"P,S2I\SXB`4DSi/Pzz,bk NLJOIN Div;y#
"P,S;h*+dkmEr#C,SGby4PD:(h"P,SDZ?m,;s
(}T,SP5xP"P&mxzI;viRm#;s|A!b?m,T,SP5x
P"P&m"lk*Z?mzIDiRm#
T\(i:
v 9C>X=J(4,}C;vmD=J)TuY*,SDPD}?#
v vsCErQsDs!,9dc;sTcZZfP]IC"PiRm#
v g{3FE";GnBD,G49C runstats |nTdxP|B#
INSERT Kc{KKc{m>+Pek=mP#
Kc{{:INSERT
m>:KKc{m>;vXhDYw#*5MCJ=8I>,I+"b&/PZ(e
*ekDP/Dd{Kc{(g(hM,S)O#
IXAND Kc{KKc{m>T`vw}(hDa{4P“k”Kc(AND)#
Kc{{:IXAND
Z 5 B Kc{ 49
![Page 58: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/58.jpg)
m>:T9C“/,;<”<uD`Xw}(hDa{y4PD“k”(AND)Kc#C
Kc{Jm+xPK“k”(AND)KcD=J&CZ`vw}T!?uYy>mC
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v ZCJy>m.0u!P/D6'#
v +&CZ`vw}D=JC“k”(AND)Kc,Z;p#
v +CZGM,SPDk,Sa{C“k”(AND)Kc,Z;p#
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v P1,}]b|BI\}pw};VN,Sx<B}`Dw}3#bI(}>}"
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v (#,1;^(8P1w}(hnP'#*K@F^(PD}?,E/w9C=J
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|nD WITH DISTRIBUTION Sd4ksV<3FE"G\X*D#(}9CGy
HV<3FE",E/wIxp51MG51vVD5#
v IZ*<M#9|G9C IXAND DX|,J IXAND nCIC%Pw}#
v TZGM,S,TB5mM`X,mP?vn_!qTP4(%Pw}#
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50 Visual Explain LL
![Page 59: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/59.jpg)
MSJOIN Kc{KKc{m>O",S#
Kc{{:MSJOIN
m>:O",S,dPb?MZ?mD^(P<Xk{O,S=J3r#O",S2
F*O"(h,SrErDO",S#
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PDP`H1,O",SMGI\D#|9IIXB`4DSi/zz#
O",Sh*T,SPDPrdk,r*(#v(hm;N#(}CJw}rErm
IqCKPrdk#
T\(i:
v 9C>X=J(4,}C;vmD=J)TuY*,SDPD}?#
v g{3FE";GnBD,G49C runstats |nTdxP|B#
NLJOIN Kc{KKc{m>6W-7,S#
Kc{{:NLJOIN
m>:6W-7,S,C,STb?mD?;P(h;N((#P;vw}(h)Z
?m#
1 FROM SdP}CK`vm1,,SGXhD#6W-7,S;*sP,S=J,
+;cP;vra4PC|C#
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v *b?mD?vCJPTZ?m4Pw}iR#
T\(i:
v tZ?m(T>Z NLJOIN Kc{R_Dm)D,S=JPP;vw},G46W-
7,S\I\a|P'#liTi4Z?mGq* TBSCAN x;* IXSCAN#t*
TBSCAN,G4<GmSd,SPDw}#
m;V9,S|P'D(N*D)=(G4(b?m,SPDw}T9b?mP
r#
v g{3FE";GnBD,G49C runstats |nTdxP|B#
PIPE Kc{KKc{vJCZwT==#
Kc{{F:PIPE
yw:Td{Kc{+MP;a|Db)P#
Z 5 B Kc{ 51
![Page 60: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/60.jpg)
RETURN Kc{KKc{m>Si/5X}]#
Kc{{:RETURN
m>:4TTC'Di/D}]5X#bGCJ=8<PDnUKc{,|T>CJ
=8\D[F5MI>#
KKc{m>;vXhDYw#
T\(i:
v 7#9CKvlwzh*D}]D=J#}g,7#=JD!qT5m>zk*5
XDG?Vm#
RIDSCN Kc{KKc{m>(hPj6(RID)Pm#
Kc{{:RIDSCN
m>:(hS;vr`vw}qCDPj6(RID)Pm#
1"zBPiv1,E/wa<GKKc{:
v =J(} OR X|V,SrP;v IN =J#I9C;VF*w}“r”(OR)D<
u,C<u+,;mO`vw}CJDa{iOp4#
v 9C%vw}CJDPm$!\PC&,r*ZCJy>P.0ErPj6a9 I/O
|P'#
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Kc{{:RPD
m>:Z*O53P(}GX5M|0wCZS6L}]4lw}]DKc{#
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RPD Kc{r6LGX5}]4"Mlwi/a{Dks#CksIGX5M|0w(
}9C}]4'VD API zI#
SHIP Kc{KKc{S6L}]4lw}]#
Kc{{:SHIP
m>:*O53PC4S6L}]4lw}]DKc{#g{Kc{|,D6L=8
+;a;E/wli,G4KKc{IE/w4<G#SHIP Kc{r6L}]4"MC
Zlwi/a{D SQL r XQuery SELECT od#SELECT odG9C}]4'VD
SQL r XQuery =TzID,RIT|,}]4yJmDNNP'i/#
52 Visual Explain LL
![Page 61: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/61.jpg)
SORT Kc{KKc{m>TmPDPEr#
Kc{{:SORT
m>:ErYw,|+mPDP4Ud;vr`vPD3rEr,IT!q{}X4
n?#
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k!qod -> T>3FE" -> mUd#)
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;sS|D/vK%P!qdC#Sr*DJG>P!q“T\”!n(#
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TBSCAN Kc{KKc{m>m(h#
Kc{{:TBSCAN
m>:m(h(X5(h),|(}S}]31SA!yPXh}]4lwP#
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v (hD5D6'51vV(4,XkCJs`}Dm)
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Z 5 B Kc{ 53
![Page 62: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/62.jpg)
v tw}Q-fZ+4;9C,G4liPXZ|D?v0<PD!q=J#g{b
)=J75fZ,G4SB4liCw}D/:HGq;_#(*i4K3FE",
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"”0Z#)
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V;}M_553FE"a)XZ=J!qTDE"#}g,b)3FE"+CZ
7(N1!qw}(hx;Gm(h#*|Bb)5,kTm9CxP WITH DIS-
TRIBUTION SdD runstats |n#
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Kc{{:TEMP
m>:+}]f"=Y1mPDYw,b)}]+Im;Kc{XA(I\G`N)#
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US_ORDERS.DETAILS G;v XML P#g{[vz7D\},} 100,G4TB
XQuery odMa5XyP)%:
Xquery let $all_orders := db2-fn:xmlcolumn('US_ORDERS.DETAILS')
54 Visual Explain LL
![Page 63: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/63.jpg)
Xquery let $all_orders := db2-fn:xmlcolumn('US_ORDERS.DETAILS')
dP
sum($all_orders//product/qty) > 100
5X
$all_orders
TZ XQuery od,db2exfmt |nazzTB|, XTQ Kc{DCJ=8dv#Z
=8dvP,+yPf"Z US_ORDERS.DETAILS PP XML D5D}C7IA-w
LrVx"[/I+VrP,;s++VrPPD?;n7IXd-<D<=VxR
a{;p[/I;vBDdv+VrP#
RowsRETURN( 1)CostI/O|1
NLJOIN( 2)98.171
8/-+-\
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1 7|360DTQ
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1|180
TBSCAN ( 6)22.051
1|180
TABLE: USER1US_ORDERS
UNION Kc{KKc{m>"C`vmPDPw#
Kc{{:UNION
m>:KKc{m>;vXhDYw#*5MCJ=8I>,I+"b&/PZ(e
K*"CDP/Dd{Kc{(g(hM,S)O#
Z 5 B Kc{ 55
![Page 64: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/64.jpg)
UNIQUE Kc{KKc{m>xP`v5DP#
Kc{{:UNIQUE
m>:{}Z8(P_PX45DPb;Yw#
T\(i:
v v1ZJ1DPfZ(;w}1,KKc{E;GXhD#
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UPDATE Kc{KKc{m>|BmPPD}]#
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0.00915933NLJOIN( 2)985.78998.9779/--+--\
2.96215 0.00309213
56 Visual Explain LL
![Page 65: IBM DB2 9.7 Linux f UNIX fM Windows fpublic.dhe.ibm.com/.../zh_CN/DB2VisualExplain-db2tvc970.pdf · 2009-07-16 · */, SQL r XQuery od4(5wlU >NEvgN*/, SQL r XQuery od4(5wlU#":>ZPa)K4(5wlUE")zN5wlU,r](https://reader034.vdocument.in/reader034/viewer/2022050417/5f8d12aa71a7a76e6c29a53c/html5/thumbnails/65.jpg)
FETCH XSCAN( 3) ( 11)340.113 217.976
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58 Visual Explain LL
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60 Visual Explain LL
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62 Visual Explain LL
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64 Visual Explain LL
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66 Visual Explain LL
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92 Visual Explain LL
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96 Visual Explain LL
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98 Visual Explain LL
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100 Visual Explain LL
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