![]() Tables have valid field names and Object ID fields, if the join The Validate Join tool can be used to validate a join between two layers or tables to determine if the layers or The definition query can be removed using the Remove Join tool or by manually removing the definition query from the layer. The definition query of the join table will be applied to the input layer or table view. If the input layer or table view's fields were modified (renamed or hidden) using the Field Info parameter in the Make Feature Layer or Make Table View tool, the field modifications will not be included in the output joined layer or table view. If they're not, try deleting and re-creating the index and rerun the tool. If the join results are unexpected or incomplete, review whether the Join Table Field and Input Join Field parameter values are indexed. Alternatively, each joining field can be indexed with the Add Attribute Index tool. If the Index Joined Fields parameter is checked, an attribute index will be added to both joining fields. Indexing the fields in the input table and join table on which the join will be based can improve performance. In the resulting table, fields will be prefixed with the input's name and a period (.), and all fields from the join table will be prefixed with the join table name and a period as the default.įor example, joining landuse, which has fields A and B, to lookup_tab, which has fields C and D, will result in a layer or table view with landuse.A, landuse.B, lookup_tab.C, and lookup_tab.D fields. Similarly, the Updated Input Layer or Table View parameter must be set as a derived output parameter in a model tool to see the joined results. To see the results of a join created in a script tool, the tool must include the layer as a derived output parameter. A layer can be retained by saving the ArcGIS Pro session or by saving it to a layer file using the Save Layer To File tool. The join persists only for the duration of the layer. Keeping only matching records will not have any affect, as all records have matches.įield properties, such as aliases, visibility, and number formatting, are maintained when a join is added or removed.Īn input table is allowed one join at a time. The first table shows a one-to-many join. The following tables include possible outcomes of performing a join with various inputs. Then use the new feature class as input to other geoprocessing tools. Because many geoprocessing tools do not support data with duplicate Object IDs and processing such data can produce unexpected results, it is recommended that you first copy the joined layer to a new feature class using the Export Features tool. When a one-to-many join is produced by the join, the result of the join can be viewed in the attribute table, where a warning message will indicate if the table has duplicate Object IDs. If the input is a feature class or dataset path, this tool will automatically create and return a new layer with the result of the tool applied. When saving the results to a new feature class or table, the Qualified Field Names environment can be used to control whether the joined output field names will be qualified with the name of the table the field came from. To make a permanent join, either use the Join Field tool or use the joined layer as input to one of the following tools: Copy Features, Copy Rows, Export Features, or Export Table. The join will always reside in the layer, not with the data. If a data path is used, the layer will be created with the join. The Input Table parameter value can be a feature layer, a table view, or a raster layer with an attribute table.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |