QUERY

Used in

CONFIG  REQUEST  RESPONSE  

Servers

Image  Query  Feature  Extract  

Parent elements

GET_FEATURES  LAYER  LAYERDEF  STOREDQUERY 

Syntax

<QUERYAttribute Description Table
     (r)where="string"
     accuracy="Distance between points" [0]
     featurelimit="integer" [All that meet criteria]
     joinexpression="string"
     jointables="string"
     subfields="#ALL# | #ID# | #SHAPE# | Other fields in database" [#ALL#]
>


     When parent element is GET_FEATURES:
     <BUFFER... />
     <FEATURECOORDSYS... />

     When parent element is LAYER and LAYERDEF in GET_IMAGE:
     <BUFFER... />

</QUERY >
(r): Attribute or child element is required.

Description


Restrictions


Notes


Attribute Descriptions for QUERY

AttributeUsage
accuracyWithin a feature, generalizes points based on the distance specified and the resolution of the image.
featurelimitMaximum number of features to be extracted that meet criteria.
joinexpressionUsed for join tables with DBF files only; jointables must be filled to contain list of tables used; not required when a jointable is done on ArcSDE.

String must form expression: "To=[master table column which will be used for joining], From=[defines a join table column which will be joined], Type=[exact or scan]".
jointablesList of joined table names separated by blank spaces; for ArcSDE, table name is full name including database name (e.g., DATA.STATE); for shapefiles, names of DBF files without extension (e.g., STATES).
subfieldsList of fields to be extracted separated by blank space. In stored queries, all fields in the layer table must be included. Performance is generally better if the field names are all upper case.
whereDefines 'where' part of SQL expression. Required when jointables attribute for ArcSDE tables is used.
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Examples for QUERY

Example 1: When in a map configuration file using a STOREDQUERY. For additional examples on querying datasets in map configuration files and requests, see SPATIALQUERY.
<?xml version="1.0" encoding="UTF-8"?>
<ARCXML version="1.1">
  <CONFIG>
    <ENVIRONMENT>
      <LOCALE country="US" language="en" variant="" />
      <UIFONT color="0,0,0" name="Arial" size="12" style="regular" />
      <SCREEN dpi="96" />
    </ENVIRONMENT>
    <MAP>
      <PROPERTIES>
        <ENVELOPE minx="-178.21" miny="18.92" maxx="-66.96" maxy="71.41" name="Initial_Extent" />
        <MAPUNITS units="decimal_degrees" />
        <FILTERCOORDSYS id="4326" />
        <FEATURECOORDSYS id="4326"/>
      </PROPERTIES>
      <WORKSPACES>
        <SHAPEWORKSPACE name="shp_ws-0" directory="<path to USA ESRIDATA>"/>
      </WORKSPACES>
      <LAYER type="featureclass" name="CITIES" visible="true" id="2">
      <DATASET name="CITIES" type="point" workspace="shp_ws-0" />
      <SIMPLERENDERER>
        <SIMPLEMARKERSYMBOL type="square" width="5" />
      </SIMPLERENDERER>
        <EXTENSION type="StoredQuery">
        <STOREDQUERIES>
          <STOREDQUERY name="TestSt">
            <QUERY where=" ZIPL  =  &apos;[%var%]&apos; " subfields="#SHAPE# FNODE_ TNODE_ LPOLY_ RPOLY_ LENGTH RECNUM L_F_ADD L_T_ADD R_F_ADD R_T_ADD PREFIX NAME TYPE SUFFIX CFCC ZIPL ZIPR"/>
            <SQVAR position="0" name="[%var%]">
              <FIELD name="ZIPL" precision="0" type="12" size="5" />
            </SQVAR>
          </STOREDQUERY>
        </STOREDQUERIES>
        </EXTENSION>
      </LAYER>
    </MAP>
  </CONFIG>
</ARCXML>

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