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Extensible Markup Language  |  2002-01-24  |  4.8 KB  |  27 lines
  1. <?xml version="1.0" encoding="utf-8"?>
  2. <html><head><title>Join Properties</title><meta name="filename" content="text/common/explorer/database/02010101"/><meta name="language" content="en-US"/><help:css-file-link xmlns:help="http://openoffice.org/2000/help"/><!--The CSS style header method for setting styles--><style type="text/css">
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  4.         p.P1{
  5.                 }
  6.         span.T1{
  7.                 font-weight:bold;}
  8.         </style></head><body>
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  10.    
  11.    <p class="P1"/>
  12.    <p class="Head1"><help:key-word value="Join Properties" tag="kw66175_1" xmlns:help="http://openoffice.org/2000/help"/>Join Properties</p>
  13.    <p class="Paragraph"><help:key-word value="Link properties" tag="kw66175_5" xmlns:help="http://openoffice.org/2000/help"/>If you double click a series line between two linked fields in the query design, you can determine the link type in the <span class="T1">Join Properties</span> dialog. This setting will be then used in all queries created in the future.</p>
  14.    <help:popup Id="67813" Eid="joins" xmlns:help="http://openoffice.org/2000/help"><help:embedded Id="65598" Eid="wie"/></help:popup>
  15.    <p class="Head2">Options</p>
  16.    <p class="Paragraph">Specify the link type of the selected link. Queries about the various types of links differ in the number of records displayed. Four options are available:</p>
  17.    <p class="Head3"><help:help-id value="HID_DLG_QRY_INNER" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Inner join" tag="kw66175_13" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Join, inner" tag="kw66175_12" xmlns:help="http://openoffice.org/2000/help"/></p>
  18.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">For the internal join the results table contains only the records for which the content of the linked fields is the same.</help:help-text> In <help:productname xmlns:help="http://openoffice.org/2000/help">%PRODUCTNAME</help:productname> SQL this type of link is created by a corresponding WHERE clause.</p>
  19.    <p class="Head3"><help:help-id value="HID_DLG_QRY_LEFT" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Left join" tag="kw66175_11" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Join, Left" tag="kw66175_10" xmlns:help="http://openoffice.org/2000/help"/></p>
  20.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">For the left join the results table contains all fields of the left table and only those fields of the right table for which the content of the linked fields is the same.</help:help-text> In <help:productname xmlns:help="http://openoffice.org/2000/help">%PRODUCTNAME</help:productname> SQL this type of link corresponds to the <help:key-word value="LEFT OUTER JOIN" tag="kw66175_4" xmlns:help="http://openoffice.org/2000/help"/>LEFT OUTER JOIN command.</p>
  21.    <p class="Head3"><help:help-id value="HID_DLG_QRY_RIGHT" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Right Join" tag="kw66175_9" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Join, Right" tag="kw66175_8" xmlns:help="http://openoffice.org/2000/help"/></p>
  22.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">For the right join the results table contains all fields of the right table and only those fields of the left table for which the content of the linked fields is the same.</help:help-text> In <help:productname xmlns:help="http://openoffice.org/2000/help">%PRODUCTNAME</help:productname> SQL this type of link corresponds to the <help:key-word value="RIGHT OUTER JOIN" tag="kw66175_3" xmlns:help="http://openoffice.org/2000/help"/>RIGHT OUTER JOIN command.</p>
  23.    <p class="Head3"><help:help-id value="HID_DLG_QRY_FULL" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Full Join" tag="kw66175_7" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="Join, Full" tag="kw66175_6" xmlns:help="http://openoffice.org/2000/help"/></p>
  24.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">For a full join the results table contains all fields of the left and right tables.</help:help-text> In the SQL of <help:productname xmlns:help="http://openoffice.org/2000/help">%PRODUCTNAME</help:productname> this type of link corresponds to the <help:key-word value="FULL OUTER JOIN" tag="kw66175_2" xmlns:help="http://openoffice.org/2000/help"/>FULL OUTER JOIN command.</p>
  25.    <p class="Head3"><help:help-id value="HID_DLG_QRY_HELPTEXT" xmlns:help="http://openoffice.org/2000/help"/><help:help-text value="hide" xmlns:help="http://openoffice.org/2000/help">Display Field</help:help-text></p>
  26.    <p class="Paragraph"><help:help-text value="hide" xmlns:help="http://openoffice.org/2000/help">Shows the help of the current selected option.</help:help-text></p>
  27.   </body></html>