Connection String Options
The connection string properties are the various options that can be used to establish a connection. This section provides a complete list of the options you can configure in the connection string for this provider. Click the links for further details.
For more information on establishing a connection, see Establishing a Connection.
| Property | Description |
| AuthScheme | The type of authentication to use when connecting to Google BigQuery. |
| ProjectId | The ProjectId used to resolve unqualified tables. |
| DatasetId | The DatasetId used to resolve unqualified tables. |
| BillingProjectId | The ProjectId of the billing project for executing jobs. |
| Property | Description |
| AllowLargeResultSets | Whether or not to allow large datasets to be stored in temporary tables for large datasets. |
| DestinationTable | This property determines where query results are stored in Google BigQuery. |
| UseQueryCache | Specifies whether to use Google BigQuery's built-in query cache. |
| PageSize | The number of results to return per page from Google BigQuery. |
| PollingInterval | This determines how long to wait in seconds, between checks to see if a job has completed. |
| AllowUpdatesWithoutKey | Whether or not to allow update without primary keys. |
| FilterColumns | Please set `AllowUpdatesWithoutKey` to true before you could use this property. |
| UseLegacySQL | Specifies whether to use BigQuery's legacy SQL dialect for this query. By default, Standard SQL will be used. |
| Property | Description |
| UseStorageAPI | Specifies whether to use BigQuery's Storage API for bulk data reads. |
| UseArrowFormat | Specifies whether to use the Arrow format with BigQuery's Storage API. |
| StorageThreshold | The minimum number of rows a query must return to invoke the Storage API. |
| StoragePageSize | Specifies the page size to use for Storage API queries. |
| Property | Description |
| InsertMode | Specifies what kind of method to use when inserting data. By default streaming inserts are used. |
| WaitForBatchResults | Whether to wait for the job to complete when using the bulk upload API. Only active when InsertMode is set to Upload. |
| GCSBucket | Specifies the name of a GCS bucket to upload bulk data for staging. |
| GCSBucketFolder | Specifies the name of the folder in GCSBucket to upload bulk data for staging. |
| TempTableDataset | The prefix of the dataset that will contain temporary tables when performing bulk UPDATE or DELETE operations. |
| Property | Description |
| InitiateOAuth | Set this property to initiate the process to obtain or refresh the OAuth access token when you connect. |
| OAuthClientId | The client Id assigned when you register your application with an OAuth authorization server. |
| OAuthClientSecret | The client secret assigned when you register your application with an OAuth authorization server. |
| OAuthAccessToken | The access token for connecting using OAuth. |
| OAuthSettingsLocation | The location of the settings file where OAuth values are saved when InitiateOAuth is set to GETANDREFRESH or REFRESH. Alternatively, this can be held in memory by specifying a value starting with memory://. |
| Scope | Identifies the Google API access that your application is requesting. Scopes are space-delimited. |
| OAuthVerifier | The verifier code returned from the OAuth authorization URL. |
| OAuthRefreshToken | The OAuth refresh token for the corresponding OAuth access token. |
| OAuthExpiresIn | The lifetime in seconds of the OAuth AccessToken. |
| OAuthTokenTimestamp | The Unix epoch timestamp in milliseconds when the current Access Token was created. |
| Property | Description |
| OAuthJWTCert | The JWT Certificate store. |
| OAuthJWTCertType | The type of key store containing the JWT Certificate. |
| OAuthJWTCertPassword | The password for the OAuth JWT certificate. |
| OAuthJWTCertSubject | The subject of the OAuth JWT certificate. |
| OAuthJWTIssuer | The issuer of the Java Web Token. |
| OAuthJWTSubject | The user subject for which the application is requesting delegated access. |
| Property | Description |
| SSLServerCert | The certificate to be accepted from the server when connecting using TLS/SSL. |
| Property | Description |
| FirewallType | The protocol used by a proxy-based firewall. |
| FirewallServer | The name or IP address of a proxy-based firewall. |
| FirewallPort | The TCP port for a proxy-based firewall. |
| FirewallUser | The user name to use to authenticate with a proxy-based firewall. |
| FirewallPassword | A password used to authenticate to a proxy-based firewall. |
| Property | Description |
| ProxyAutoDetect | This indicates whether to use the system proxy settings or not. This takes precedence over other proxy settings, so you'll need to set ProxyAutoDetect to FALSE in order use custom proxy settings. |
| ProxyServer | The hostname or IP address of a proxy to route HTTP traffic through. |
| ProxyPort | The TCP port the ProxyServer proxy is running on. |
| ProxyAuthScheme | The authentication type to use to authenticate to the ProxyServer proxy. |
| ProxyUser | A user name to be used to authenticate to the ProxyServer proxy. |
| ProxyPassword | A password to be used to authenticate to the ProxyServer proxy. |
| ProxySSLType | The SSL type to use when connecting to the ProxyServer proxy. |
| ProxyExceptions | A semicolon separated list of destination hostnames or IPs that are exempt from connecting through the ProxyServer . |
| Property | Description |
| Logfile | A filepath which designates the name and location of the log file. |
| Verbosity | The verbosity level that determines the amount of detail included in the log file. |
| LogModules | Core modules to be included in the log file. |
| MaxLogFileSize | A string specifying the maximum size in bytes for a log file (for example, 10 MB). |
| MaxLogFileCount | A string specifying the maximum file count of log files. |
| Property | Description |
| Location | A path to the directory that contains the schema files defining tables, views, and stored procedures. |
| BrowsableSchemas | This property restricts the schemas reported to a subset of the available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC. |
| Tables | This property restricts the tables reported to a subset of the available tables. For example, Tables=TableA,TableB,TableC. |
| Views | Restricts the views reported to a subset of the available tables. For example, Views=ViewA,ViewB,ViewC. |
| RefreshViewSchemas | Allows the provider to determine up-to-date view schemas automatically. |
| ShowTableDescriptions | Controls whether table descriptions are returned via the platform metadata APIs and sys_tables / sys_views. |
| PrimaryKeyIdentifiers | Set this property to define primary keys. |
| AllowedTableTypes | Specifies what kinds of tables will be visible. |
| FlattenObjects | Determines whether the provider flattens STRUCT fields into top-level columns. |
| Property | Description |
| AutoCache | Automatically caches the results of SELECT queries into a cache database specified by either CacheLocation or both of CacheConnection and CacheProvider . |
| CacheDriver | The database driver used to cache data. |
| CacheConnection | The connection string for the cache database. This property is always used in conjunction with CacheProvider . Setting both properties will override the value set for CacheLocation for caching data. |
| CacheLocation | Specifies the path to the cache when caching to a file. |
| CacheTolerance | The tolerance for stale data in the cache specified in seconds when using AutoCache . |
| Offline | Use offline mode to get the data from the cache instead of the live source. |
| CacheMetadata | This property determines whether or not to cache the table metadata to a file store. |
| Property | Description |
| StorageTimeout | How long a Storage API connection must remain idle before the provider reconnects. |
| AllowAggregateParameters | Allows raw aggregates to be used in parameters when QueryPassthrough is enabled. |
| ApplicationName | An application name in the form application/version. For example, AcmeReporting/1.0. |
| AuditLimit | The maximum number of rows which will be stored within an audit table. |
| AuditMode | What provider actions should be recorded to audit tables. |
| BigQueryOptions | A comma separated list of Google BigQuery options. |
| ConnectionLifeTime | The maximum lifetime of a connection in seconds. Once the time has elapsed, the connection object is disposed. |
| ConnectOnOpen | This property specifies whether to connect to the Google BigQuery when the connection is opened. |
| GenerateSchemaFiles | Indicates the user preference as to when schemas should be generated and saved. |
| MaximumBillingTier | The MaximumBillingTier is a positive integer that serves as a multiplier of the basic price per TB. For example, if you set MaximumBillingTier to 2, the maximum cost for that query will be 2x basic price per TB. |
| MaximumBytesBilled | Limits how many bytes BigQuery will allow a job to consume before it is cancelled. |
| MaxRows | Limits the number of rows returned rows when no aggregation or group by is used in the query. This helps avoid performance issues at design time. |
| Other | These hidden properties are used only in specific use cases. |
| PoolIdleTimeout | The allowed idle time for a connection before it is closed. |
| PoolMaxSize | The maximum connections in the pool. |
| PoolMinSize | The minimum number of connections in the pool. |
| PoolWaitTime | The max seconds to wait for an available connection. |
| PseudoColumns | This property indicates whether or not to include pseudo columns as columns to the table. |
| QueryPassthrough | This option passes the query to the Google BigQuery server as is. |
| Readonly | You can use this property to enforce read-only access to Google BigQuery from the provider. |
| RTK | The runtime key used for licensing. |
| TableSamplePercent | This determines what percent of a table is sampled with the TABLESAMPLE operator. |
| Timeout | The value in seconds until the timeout error is thrown, canceling the operation. |
| UseConnectionPooling | This property enables connection pooling. |
| UserDefinedViews | A filepath pointing to the JSON configuration file containing your custom views. |