XMLから値を抽出してテーブルに挿入するにはどうすればよいですか？

私はXMLTypeの変数にロードされたXMLファイルを持っていると私は、このテーブルに挿入するために、異なる属性値を持ついくつかの.../ExtendedData/SchemaData/SimpleDataノードから別の値、および.../Polygon/outerBoundaryIs/LinearRing/coordinatesノードを抽出したい：XMLから値を抽出してテーブルに挿入するにはどうすればよいですか？

CREATE TABLE LIE_GEOF 
(
IDE_GEO VARCHAR2(24) NOT NULL, 
COD_COM VARCHAR2(3) , 
COD_VIL VARCHAR2(5) , 
NOM_COM VARCHAR2(50) , 
ALT_MOY NUMBER(4,0) , 
SUP_HEC NUMBER(12,0) , 
NBR_POP NUMBER(10,0) , 
COD_ARR VARCHAR2(1) , 
COD_DEP VARCHAR2(2) , 
NOM_DEP VARCHAR2(30) , 
COD_REG VARCHAR2(2) NOT NULL, 
NOM_REG VARCHAR2(35) NOT NULL, 
TXT_POL CLOB , 
CONSTRAINT LIE_GEOF_PK PRIMARY KEY (IDE_GEO) USING INDEX 
);

挿入がこのルールに従わなければならない：特定の属性値を持つ/Document/Folder/Placemark/ExtendedData/SchemaData/SimpleDataノードの

値は、テーブルの11の最初のフィールドに入ります。
ノード/Document/Folder/Placemark/Polygon/outerBoundaryIs/LinearRing/coordinatesの値は、テーブルの最後のフィールドに入ります（TXT_POL、これはCLOBです）。

など。挿入：

COMMUNE00000000000000001をID_GEOFLA
216にCOD_COM
に...
0.523147623541907,43.45799199978569 0.523016926446493,43.458214941462735に... TXT_POL

この私のXMLファイルに：

<?xml version="1.0" encoding="utf-8" ?> 
<kml xmlns="http://www.opengis.net/kml/2.2"> 
<Document id="root_doc"> 
<Schema name="COMMUNE" id="COMMUNE"> 
<SimpleField name="ID_GEOFLA" type="string"></SimpleField> 
<SimpleField name="CODE_COM" type="string"></SimpleField> 
<SimpleField name="INSEE_COM" type="string"></SimpleField> 
<SimpleField name="NOM_COM" type="string"></SimpleField> 
<SimpleField name="STATUT" type="string"></SimpleField> 
<SimpleField name="X_CHF_LIEU" type="int"></SimpleField> 
<SimpleField name="Y_CHF_LIEU" type="int"></SimpleField> 
<SimpleField name="X_CENTROID" type="int"></SimpleField> 
<SimpleField name="Y_CENTROID" type="int"></SimpleField> 
<SimpleField name="Z_MOYEN" type="int"></SimpleField> 
<SimpleField name="SUPERFICIE" type="float"></SimpleField> 
<SimpleField name="POPULATION" type="int"></SimpleField> 
<SimpleField name="CODE_ARR" type="string"></SimpleField> 
<SimpleField name="CODE_DEPT" type="string"></SimpleField> 
<SimpleField name="NOM_DEPT" type="string"></SimpleField> 
<SimpleField name="CODE_REG" type="string"></SimpleField> 
<SimpleField name="NOM_REG" type="string"></SimpleField> 
</Schema> 
<Folder><name>COMMUNE</name> 
<Placemark> 
<Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fill></PolyStyle></Style> 
<ExtendedData><SchemaData schemaUrl="#COMMUNE"> 
<SimpleData name="ID_GEOFLA">COMMUNE00000000000000001</SimpleData> 
<SimpleData name="CODE_COM">216</SimpleData> 
<SimpleData name="INSEE_COM">32216</SimpleData> 
<SimpleData name="NOM_COM">LOURTIES-MONBRUN</SimpleData> 
<SimpleData name="STATUT">Commune simple</SimpleData> 
<SimpleData name="X_CHF_LIEU">500820</SimpleData> 
<SimpleData name="Y_CHF_LIEU">6264958</SimpleData> 
<SimpleData name="X_CENTROID">500515</SimpleData> 
<SimpleData name="Y_CENTROID">6265413</SimpleData> 
<SimpleData name="Z_MOYEN">252</SimpleData> 
<SimpleData name="SUPERFICIE">966</SimpleData> 
<SimpleData name="POPULATION">139</SimpleData> 
<SimpleData name="CODE_ARR">3</SimpleData> 
<SimpleData name="CODE_DEPT">32</SimpleData> 
<SimpleData name="NOM_DEPT">GERS</SimpleData> 
<SimpleData name="CODE_REG">76</SimpleData> 
<SimpleData name="NOM_REG">LANGUEDOC-ROUSSILLON-MIDI-PYRENEES</SimpleData> 
</SchemaData></ExtendedData> 
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<SimpleData name="ID_GEOFLA">COMMUNE00000000000000002</SimpleData> 
<SimpleData name="CODE_COM">033</SimpleData> 
<SimpleData name="INSEE_COM">47033</SimpleData> 
<SimpleData name="NOM_COM">BOUDY-DE-BEAUREGARD</SimpleData> 
<SimpleData name="STATUT">Commune simple</SimpleData> 
<SimpleData name="X_CHF_LIEU">516424</SimpleData> 
<SimpleData name="Y_CHF_LIEU">6384852</SimpleData> 
<SimpleData name="X_CENTROID">515575</SimpleData> 
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<SimpleData name="SUPERFICIE">1019</SimpleData> 
<SimpleData name="POPULATION">414</SimpleData> 
<SimpleData name="CODE_ARR">3</SimpleData> 
<SimpleData name="CODE_DEPT">47</SimpleData> 
<SimpleData name="NOM_DEPT">LOT-ET-GARONNE</SimpleData> 
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<SimpleData name="NOM_REG">AQUITAINE-LIMOUSIN-POITOU-CHARENTES</SimpleData> 
</SchemaData></ExtendedData> 
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<SimpleData name="NOM_COM">ARMOUS-ET-CAU</SimpleData> 
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<SimpleData name="NOM_DEPT">GERS</SimpleData> 
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<SimpleData name="NOM_REG">LANGUEDOC-ROUSSILLON-MIDI-PYRENEES</SimpleData> 
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<SimpleData name="NOM_COM">AUTRANS-MEAUDRE EN VERCORS</SimpleData> 
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<SimpleData name="X_CHF_LIEU">898640</SimpleData> 
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<Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fill></PolyStyle></Style> 
<ExtendedData><SchemaData schemaUrl="#COMMUNE"> 
<SimpleData name="ID_GEOFLA">COMMUNE00000000000000005</SimpleData> 
<SimpleData name="CODE_COM">890</SimpleData> 
<SimpleData name="INSEE_COM">62890</SimpleData> 
<SimpleData name="NOM_COM">WILLEMAN</SimpleData> 
<SimpleData name="STATUT">Commune simple</SimpleData> 
<SimpleData name="X_CHF_LIEU">640049</SimpleData> 
<SimpleData name="Y_CHF_LIEU">7028672</SimpleData> 
<SimpleData name="X_CENTROID">640115</SimpleData> 
<SimpleData name="Y_CENTROID">7029900</SimpleData> 
<SimpleData name="Z_MOYEN">79</SimpleData> 
<SimpleData name="SUPERFICIE">1023</SimpleData> 
<SimpleData name="POPULATION">178</SimpleData> 
<SimpleData name="CODE_ARR">4</SimpleData> 
<SimpleData name="CODE_DEPT">62</SimpleData> 
<SimpleData name="NOM_DEPT">PAS-DE-CALAIS</SimpleData> 
<SimpleData name="CODE_REG">32</SimpleData> 
<SimpleData name="NOM_REG">NORD-PAS-DE-CALAIS-PICARDIE</SimpleData> 
</SchemaData></ExtendedData> 
<Polygon><outerBoundaryIs><LinearRing><coordinates>2.151357610477108,50.342723579428736 2.150582398840049,50.343853128809613 2.150439420398362,50.344345961981944 2.147781898036236,50.348429901247719 2.144643960903647,50.352848920107654 2.142170362713468,50.354312287967623 2.139785273502974,50.354442932204655 2.139147310728909,50.356057285129864 2.136459688875384,50.361894178627317 2.136303634967463,50.362073550534305 2.136457891197435,50.362163514907749 2.143309717417935,50.367975295072092 2.149574739686743,50.375379804640581 2.151353800635636,50.377701211726055 2.152307917736184,50.378321866071232 2.155756214194353,50.379913059929052 2.154864354931062,50.380685355552338 2.155973798477377,50.381259457705227 2.156409086307008,50.380669881870404 2.157182705972685,50.37999822017963 2.158308050333875,50.379282265278022 2.159644626590358,50.378610832073001 2.166473449179359,50.37565036238319 2.167106098271396,50.375426588179472 2.167893230445291,50.375114070985006 2.168055448620143,50.374896996422471 2.168526372902896,50.37426272358401 2.169092409895663,50.373051795846251 2.169942448266939,50.370531964916502 2.170719245301723,50.368962416427962 2.175080979569476,50.369372312649269 2.183859825720376,50.370773789773402 2.18505079929214,50.370999825609218 2.185191902200479,50.370954968509238 2.18564361921614,50.370190318886401 2.184787545948869,50.370002412843633 2.183708661363136,50.369617304240514 2.182463727449356,50.36830454074083 2.181402963860765,50.366544971983508 2.182476664280656,50.364123484539761 2.185726357443533,50.356526912933504 2.186427269755563,50.356662618447764 2.186638577991434,50.356438655774838 2.187202454197396,50.355496954539362 2.188401939261542,50.353075312390636 2.186319206527587,50.348124388463035 2.184784410495321,50.343586432428438 2.184713679145266,50.343361503403536 2.18317169343704,50.343538954992638 2.166941973276032,50.344953195994378 2.152128396725606,50.342859066974349 2.151357610477108,50.342723579428736</coordinates></LinearRing></outerBoundaryIs></Polygon> 
</Placemark> 
</Folder> 
</Document></kml>

私がこれまでに試したのは、属性ID_GEOFLAに一致するノード値を抽出することです。しかし、これはうまくいかなかった：

CREATE OR REPLACE PROCEDURE load_xml (p_dir  IN VARCHAR2, 
            p_filename IN VARCHAR2) AS 
l_bfile BFILE := BFILENAME(p_dir, p_filename); 
l_clob CLOB; 
xml_data xmltype; 
ID_GEOFLA varchar2(255); 

BEGIN 

DBMS_LOB.createtemporary (l_clob, TRUE); 
DBMS_LOB.fileopen(l_bfile, DBMS_LOB.file_readonly); 
DBMS_LOB.loadfromfile(l_clob, l_bfile, DBMS_LOB.getlength(l_bfile)); 
DBMS_LOB.fileclose(l_bfile); 

xml_data :=XMLTYPE.createXML(l_clob); 

for x in (

select a.ID 
from 
    XMLTABLE('/Document/Folder/Placemark/ExtendedData/SchemaData' 
      PASSING xml_data 
      COLUMNS ID VARCHAR2(100) PATH '//SimpleData/text()' 

     ) a) loop 
     dbms_output.put_line(x.ID); 

     end loop; 

    DBMS_LOB.freetemporary (l_clob); 

    END; 
/

私のテーブルにXMLデータを取得するにはどうすればよいですか？

出典

2017-01-10 ITE

XMLTable XPathでそれらを参照する必要がある複数の目印があります。そして、列パスが関連する属性を指定し、各ノードを参照するために：

xmltable(xmlnamespaces(default 'http://www.opengis.net/kml/2.2'), 
    '/kml/Document/Folder/Placemark' 
    passing xmltype(l_clob) 
    columns ide_geo varchar2(24) path 'ExtendedData/SchemaData/SimpleData[@name="ID_GEOFLA"]', 
    cod_com varchar2(3) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_COM"]', 
    cod_vil varchar2(5) path 'ExtendedData/SchemaData/SimpleData[@name="INSEE_COM"]', 
    nom_com varchar2(50) path 'ExtendedData/SchemaData/SimpleData[@name="NOM_COM"]', 
    alt_moy number(4,0) path 'ExtendedData/SchemaData/SimpleData[@name="Z_MOYEN"]', 
    sup_hec number(12,0) path 'ExtendedData/SchemaData/SimpleData[@name="SUPERFICIE"]', 
    nbr_pop number(10,0) path 'ExtendedData/SchemaData/SimpleData[@name="POPULATION"]', 
    cod_arr varchar2(1) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_ARR"]', 
    cod_dep varchar2(2) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_DEPT"]', 
    nom_dep varchar2(30) path 'ExtendedData/SchemaData/SimpleData[@name="NOM_DEPT"]', 
    cod_reg varchar2(2) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_REG"]', 
    nom_reg varchar2(35) path 'ExtendedData/SchemaData/SimpleData[@name="NOM_REG"]', 
    txt_pol clob path 'Polygon/outerBoundaryIs/LinearRing/coordinates' 
);

も/kmlルートノードの包含、およびデフォルトの名前空間の宣言に気づきます。

BFILEからロードされたCLOBとそれを使用するように手順を適合し、単一insert ... select（不要カーソルループ）で、あなたが行うことができます：あなたのファイルを実行します

create or replace procedure load_xml (p_dir in varchar2, 
    p_filename in varchar2) 
as 
    l_clob clob; 
    l_bfile bfile := bfilename(p_dir, p_filename); 
    l_dest_offset pls_integer := 1; 
    l_src_offset pls_integer := 1; 
    l_lang_context pls_integer := 0; 
    l_warning pls_integer; 
begin 
    dbms_lob.createtemporary (l_clob, true); 
    dbms_lob.fileopen(l_bfile, dbms_lob.file_readonly); 
    dbms_lob.loadclobfromfile(dest_lob=>l_clob, 
    src_bfile=>l_bfile, 
    amount=>dbms_lob.lobmaxsize, 
    dest_offset=>l_dest_offset, 
    src_offset=>l_src_offset, 
    bfile_csid=>0, 
    lang_context=>l_lang_context, 
    warning=>l_warning); 
    dbms_lob.fileclose(l_bfile); 

    insert into lie_geof (ide_geo, cod_com, cod_vil, nom_com, alt_moy, sup_hec, 
    nbr_pop, cod_arr, cod_dep, nom_dep, cod_reg, nom_reg, txt_pol) 
    select ide_geo, cod_com, cod_vil, nom_com, alt_moy, sup_hec, 
    nbr_pop, cod_arr, cod_dep, nom_dep, cod_reg, nom_reg, txt_pol 
    from xmltable(xmlnamespaces(default 'http://www.opengis.net/kml/2.2'), 
    '/kml/Document/Folder/Placemark' 
    passing xmltype(l_clob) 
    columns ide_geo varchar2(24) path 'ExtendedData/SchemaData/SimpleData[@name="ID_GEOFLA"]', 
     cod_com varchar2(3) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_COM"]', 
     cod_vil varchar2(5) path 'ExtendedData/SchemaData/SimpleData[@name="INSEE_COM"]', 
     nom_com varchar2(50) path 'ExtendedData/SchemaData/SimpleData[@name="NOM_COM"]', 
     alt_moy number(4,0) path 'ExtendedData/SchemaData/SimpleData[@name="Z_MOYEN"]', 
     sup_hec number(12,0) path 'ExtendedData/SchemaData/SimpleData[@name="SUPERFICIE"]', 
     nbr_pop number(10,0) path 'ExtendedData/SchemaData/SimpleData[@name="POPULATION"]', 
     cod_arr varchar2(1) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_ARR"]', 
     cod_dep varchar2(2) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_DEPT"]', 
     nom_dep varchar2(30) path 'ExtendedData/SchemaData/SimpleData[@name="NOM_DEPT"]', 
     cod_reg varchar2(2) path 'ExtendedData/SchemaData/SimpleData[@name="CODE_REG"]', 
     nom_reg varchar2(35) path 'ExtendedData/SchemaData/SimpleData[@name="NOM_REG"]', 
     txt_pol clob path 'Polygon/outerBoundaryIs/LinearRing/coordinates' 
); 

    dbms_lob.freetemporary (l_clob); 
end; 
/

を...取得：

select * from lie_geof; 

IDE_GEO     COD COD_V NOM_COM            ALT_MOY SUP_HEC NBR_POP C CO NOM_DEP      CO NOM_REG        TXT_POL                   
------------------------ --- ----- -------------------------------------------------- ---------- ---------- ---------- - -- ------------------------------ -- ----------------------------------- -------------------------------------------------------------------------------- 
COMMUNE00000000000000001 216 32216 LOURTIES-MONBRUN           252  966  139 3 32 GERS       76 LANGUEDOC-ROUSSILLON-MIDI-PYRENEES 0.523147623541907,43.45799199978569 0.523016926446493,43.458214941462735 0.52281 
COMMUNE00000000000000002 033 47033 BOUDY-DE-BEAUREGARD          112  1019  414 3 47 LOT-ET-GARONNE     75 AQUITAINE-LIMOUSIN-POITOU-CHARENTES 0.662777282430262,44.533218568792947 0.662625822063777,44.533683684987352 0.6641 
COMMUNE00000000000000003 009 32009 ARMOUS-ET-CAU            221  932   95 3 32 GERS       76 LANGUEDOC-ROUSSILLON-MIDI-PYRENEES 0.211253773793326,43.587275605450763 0.211662108609333,43.586825129365288 0.2114 
COMMUNE00000000000000004 225 38225 AUTRANS-MEAUDRE EN VERCORS        1234  3371  2973 1 38 ISERE       84 AUVERGNE-RHONE-ALPES    5.577223028135769,45.242894349342798 5.57832596943672,45.243222059527241 5.57940 
COMMUNE00000000000000005 890 62890 WILLEMAN             79  1023  178 4 62 PAS-DE-CALAIS     32 NORD-PAS-DE-CALAIS-PICARDIE   2.151357610477108,50.342723579428736 2.150582398840049,50.343853128809613 2.1504

出典

2017-01-10 10:18:08

ありがとうたくさんのAlex！今の問題は、私の実際のファイルが119メガバイトで、スクリプトが3時間以上実行されていることです。実際には実稼働環境で使用するのは完全に賢明ではないと思います... – ITE

おそらく、しかし、しばしば読み込まれ、解析されますか？挿入部分を実行せずにループ内でクエリ部分を実行すると（おそらく他のどこか）、XMLにどれくらいの時間を費やしているのか、挿入部分にどれくらいの時間を費やしているのかを知ることができます。あなたのDBAはボトルネックについてアドバイスすることができます。もう1つの選択肢は、XMLをCSVに分割して外部テーブルとしてロードするかSQL * Loader経由でロードすることですが、最終的なCLOBカラムはそれが実際に4kを超えることができると仮定してトリッキーにします。 –

XMLから値を抽出してテーブルに挿入するにはどうすればよいですか？

答えて

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