Changes between Version 6 and Version 7 of VirtualSpatialData
- Timestamp:
- Jan 27, 2009, 4:07:31 PM (15 years ago)
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VirtualSpatialData
v6 v7 108 108 The virtual file can be called anything you want and be placed anywhere. I'll assume its called virtual.ovf (OGR Virtual File = .ovf). 109 109 110 The <SrcLayer?> parameter is a table name. If you wish to join tables or select only certain columns, you can use an SQL statement by omitting <SrcLayer?> and including <SrcSQL?>select table.name, table.x, table.y from table</SrcSQL?> in its place. Note that in the GeometryField?, you may need to refer to the attributes x and y as table.x and table.y in this case.110 The !<SrcLayer> parameter is a table name. If you wish to join tables or select only certain columns, you can use an SQL statement by omitting !<SrcLayer> and including !<SrcSQL>select table.name, table.x, table.y from table!</SrcSQL> in its place. Note that in the !GeometryField, you may need to refer to the attributes x and y as table.x and table.y in this case. 111 111 112 112 === Testing using ogrinfo ===
