BigQuery source import data from.
| JSON representation | 
|---|
{ "projectId": string, "datasetId": string, "tableId": string, "gcsStagingDir": string, "dataSchema": string, // Union field  | 
            
| Fields | |
|---|---|
projectId | 
              
                 
 The project ID or the project number that contains the BigQuery source. Has a length limit of 128 characters. If not specified, inherits the project ID from the parent request.  | 
            
datasetId | 
              
                 
 Required. The BigQuery data set to copy the data from with a length limit of 1,024 characters.  | 
            
tableId | 
              
                 
 Required. The BigQuery table to copy the data from with a length limit of 1,024 characters.  | 
            
gcsStagingDir | 
              
                 
 Intermediate Cloud Storage directory used for the import with a length limit of 2,000 characters. Can be specified if one wants to have the BigQuery export to a specific Cloud Storage directory.  | 
            
dataSchema | 
              
                 
 The schema to use when parsing the data from the source. Supported values for user event imports: 
 Supported values for document imports: 
  | 
            
Union field partition. BigQuery table partition info. Leave this empty if the BigQuery table is not partitioned. partition can be only one of the following: | 
            |
partitionDate | 
              
                 
 BigQuery time partitioned table's _PARTITIONDATE in YYYY-MM-DD format.  |