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How does the sqlexecutor function in FME work?
The SQLExecutor receives features via the Initiator port, and for every feature it receives, it executes a SQL query against an external database. The query results, as well as the initiating features, are output. SQL statements are constructed within the transformer, using the appropriate syntax for the database in use.
How to avoid the sqlcreator in FME transformer?
DatabaseJoiner has a single input port for when one set of data is in the workspace and the other set exists in a database elsewhere. Or check out the Prefetch Query setting in the DatabaseJoiner, which might be another way to avoid the SQLCreator.
When to use featurejoiner instead of databasejoiner?
If it’s to do some sort of pre-query of the data (which I don’t honestly think should be necessary) then use a FeatureJoiner instead of the DatabaseJoiner. FeatureJoiner has two input ports for when both sets of data to join are already being read into the workspace.
How to query a cadastre file in FME?
1. Get current cadastre and clean it to be in the format we require (done as part of FME Merge two files that only have some attributes the same ) 2.
How is the geometry of a feature extracted in FME?
Extracts the geometryof a feature according to the setting of the geometry encoding parameter. The resulting encoded geometry is added to the feature in an attribute. This attribute can later be restored as the feature’s geometry via the GeometryReplacertransformer.
How are SQL statements constructed in the transformer?
The query results, as well as the initiating features, are output. SQL statements are constructed within the transformer, using the appropriate syntax for the database in use. Spatial queries are supported if the database supports spatial predicates. If the database supports spatial predicates, spatial queries may be used.
How does the sqlexecutor work in a database?
The SQLExecutor receives features via the Initiator port, and for every feature it receives, it executes a SQL query against an external database. The query results, as well as the initiating features, are output.