Uploading Jsonlines to Google Bucket With Ruby
Loading JSON data from Cloud Storage
Loading JSON files from Cloud Storage
You lot tin load newline delimited JSON data from Cloud Storage into a new table or segmentation, or append to or overwrite an existing tabular array or partition. When your data is loaded into BigQuery, it is converted into columnar format for Capacitor (BigQuery'south storage format).
When you lot load data from Cloud Storage into a BigQuery table, the dataset that contains the table must be in the same regional or multi- regional location as the Cloud Storage bucket.
The newline delimited JSON format is the same format as the JSON Lines format.
For information about loading JSON information from a local file, run across Loading data from local files.
Limitations
When you load JSON files into BigQuery, note the following:
- JSON information must be newline delimited. Each JSON object must be on a split up line in the file.
- If you use gzip pinch, BigQuery cannot read the information in parallel. Loading compressed JSON information into BigQuery is slower than loading uncompressed data.
- Yous cannot include both compressed and uncompressed files in the same load job.
- The maximum size for a gzip file is 4 GB.
-                       BigQuery does non support maps or dictionaries in JSON, due to potential lack of schema information in a pure JSON dictionary. For case, to represent a list of products in a cart "products": {"my_product": forty.0, "product2" : xvi.five}is not valid, just"products": [{"product_name": "my_product", "amount": 40.0}, {"product_name": "product2", "amount": 16.five}]is valid.If you need to keep the entire JSON object, then information technology should be put into a stringcolumn, which can exist queried using JSON functions.
-                       If you lot use the BigQuery API to load an integer outside the range of [-253+i, 253-1] (usually this means larger than nine,007,199,254,740,991), into an integer (INT64) cavalcade, pass it as a string to avoid data corruption. This outcome is caused by a limitation on integer size in JSON/ECMAScript. For more data, run across the Numbers department of RFC 7159. 
- When you load CSV or JSON data, values in                      Engagementcolumns must use the dash (-) separator and the date must be in the post-obit format:YYYY-MM-DD(year-month-day).
- When y'all load JSON or CSV data, values in                      TIMESTAMPcolumns must utilise a dash (-) separator for the date portion of the timestamp, and the appointment must exist in the following format:YYYY-MM-DD(yr-month-twenty-four hour period). Thehh:mm:ss(hour-minute-2nd) portion of the timestamp must use a colon (:) separator.
Before you begin
Grant Identity and Access Management (IAM) roles that give users the necessary permissions to perform each job in this certificate.
Required permissions
To load data into BigQuery, you demand IAM permissions to run a load job and load data into BigQuery tables and partitions. If you are loading data from Cloud Storage, you also need IAM permissions to access the saucepan that contains your information.
Permissions to load data into BigQuery
To load data into a new BigQuery table or partition or to append or overwrite an existing table or partition, you need the post-obit IAM permissions:
-                       bigquery.tables.create
-                       bigquery.tables.updateData
-                       bigquery.tables.update
-                       bigquery.jobs.create
Each of the following predefined IAM roles includes the permissions that y'all demand in club to load data into a BigQuery table or partitioning:
-                       roles/bigquery.dataEditor
-                       roles/bigquery.dataOwner
-                       roles/bigquery.admin(includes thebigquery.jobs.createpermission)
-                       bigquery.user(includes thebigquery.jobs.createpermission)
-                       bigquery.jobUser(includes thebigquery.jobs.createpermission)
Additionally, if you accept the                    bigquery.datasets.create                    permission, you can create and update tables using a load job in the datasets that you create.
For more information on IAM roles and permissions in BigQuery, see Predefined roles and permissions.
Permissions to load information from Cloud Storage
To load information from a Deject Storage bucket, you need the following IAM permissions:
-                       storage.objects.go
-                       storage.objects.listing(required if y'all are using a URI wildcard)
The predefined IAM role                    roles/storage.objectViewer                    includes all the permissions you need in order to load information from a Cloud Storage bucket.
Loading JSON data into a new table
Y'all can load newline delimited JSON information from Cloud Storage into a new BigQuery tabular array by using one of the following:
- The Cloud Panel
- The                      bqcontrol-line tool'southbq loadcontrol
- The                      jobs.insertAPI method and configuring aloadjob
- The client libraries
To load JSON information from Deject Storage into a new BigQuery table:
Console
-                           In the Deject Console, open the BigQuery page. Get to BigQuery 
-                           In the Explorer console, aggrandize your project and select a dataset. 
-                           Expand the Actions option and click Open. 
-                           In the details panel, click Create table . 
-                           On the Create table page, in the Source department: -                               For Create table from, select Cloud Storage. 
-                               In the source field, scan to or enter the Cloud Storage URI. You cannot include multiple URIs in the Cloud Console, merely wildcards are supported. The Cloud Storage saucepan must exist in the same location as the dataset that contains the table you're creating.   
-                               For File format, select JSON (Newline delimited). 
 
-                               
-                           On the Create tabular array folio, in the Destination department: -                               For Dataset proper name, choose the appropriate dataset.   
-                               Verify that Tabular array type is fix to Native table. 
-                               In the Table name field, enter the proper name of the table you're creating in BigQuery. 
 
-                               
-                           In the Schema section, for Automobile detect, cheque Schema and input parameters to enable schema auto detection. Alternatively, yous can manually enter the schema definition by: -                               Enabling Edit every bit text and entering the tabular array schema as a JSON array.   
-                               Using Add field to manually input the schema.   
 
-                               
-                           (Optional) To partition the table, choose your options in the Division and cluster settings. For more than information, see Creating partitioned tables. 
-                           (Optional) For Partitioning filter, click the Require partition filter box to require users to include a WHEREclause that specifies the partitions to query. Requiring a partition filter tin reduce toll and improve performance. For more data, run into Querying partitioned tables. This option is unavailable if No partitioning is selected.
-                           (Optional) To cluster the table, in the Clustering club box, enter between i and iv field names. 
-                           (Optional) Click Advanced options. - For Write preference, leave Write if empty selected. This selection creates a new table and loads your data into it.
- For                              Number of errors allowed, accept the default value of                              0or enter the maximum number of rows containing errors that can be ignored. If the number of rows with errors exceeds this value, the job results in aninvalidmessage and fails.
- For Unknown values, check Ignore unknown values to ignore any values in a row that are non present in the table's schema.
- For Encryption, click Customer-managed key to utilise a Cloud Key Management Service key. If you exit the Google-managed key setting, BigQuery encrypts the data at residue.
 
-                           Click Create table. 
bq
Use the                        bq load                        command, specify                        NEWLINE_DELIMITED_JSON                        using the                        --source_format                        flag, and include a Cloud Storage URI. Yous tin include a single URI, a comma-separated listing of URIs, or a URI containing a wildcard. Supply the schema inline, in a schema definition file, or use schema machine-detect.
(Optional) Supply the                        --location                        flag and set the value to your location.
Other optional flags include:
-                           --max_bad_records: An integer that specifies the maximum number of bad records allowed before the entire job fails. The default value is0. At most, five errors of any blazon are returned regardless of the--max_bad_recordsvalue.
-                           --ignore_unknown_values: When specified, allows and ignores actress, unrecognized values in CSV or JSON information.
-                           --autodetect: When specified, enable schema auto-detection for CSV and JSON data.
-                           --time_partitioning_type: Enables time-based partitioning on a table and sets the partition blazon. Possible values areHOUR,Twenty-four hours,MONTH, andYear. This flag is optional when you create a tabular array partitioned on aDATE,DATETIME, orTIMESTAMPcolumn. The default partitioning blazon for time-based partitioning isTwenty-four hours. You cannot change the partitioning specification on an existing table.
-                           --time_partitioning_expiration: An integer that specifies (in seconds) when a time-based sectionalisation should be deleted. The expiration time evaluates to the partition's UTC date plus the integer value.
-                           --time_partitioning_field: TheDATEorTIMESTAMPcavalcade used to create a partitioned tabular array. If time-based sectionalization is enabled without this value, an ingestion-time partitioned tabular array is created.
-                           --require_partition_filter: When enabled, this option requires users to include aWHEREclause that specifies the partitions to query. Requiring a sectionalization filter can reduce toll and better functioning. For more information, encounter Querying partitioned tables.
-                           --clustering_fields: A comma-separated list of upwardly to four cavalcade names used to create a clustered tabular array.
-                           --destination_kms_key: The Cloud KMS key for encryption of the table data.For more information on partitioned tables, see: - Creating partitioned tables
 For more information on clustered tables, see: - Creating and using clustered tables
 For more information on table encryption, see: - Protecting data with Cloud KMS keys
 
To load JSON data into BigQuery, enter the following command:
bq --location=LOCATION load \ --source_format=FORMAT \ DATASET.TABLE \ PATH_TO_SOURCE \ SCHEMA
Supplant the following:
-                           LOCATION: your location. The--locationflag is optional. For example, if y'all are using BigQuery in the Tokyo region, you can set the flag's value toasia-northeast1. You can set a default value for the location using the .bigqueryrc file.
-                           FORMAT:NEWLINE_DELIMITED_JSON.
-                           DATASET: an existing dataset.
-                           Table: the proper noun of the table into which y'all're loading data.
-                           PATH_TO_SOURCE: a fully qualified Cloud Storage URI or a comma-separated list of URIs. Wildcards are also supported.
-                           SCHEMA: a valid schema. The schema can be a local JSON file, or it can be typed inline every bit part of the command. If yous employ a schema file, practise non give it an extension. Y'all can also utilise the--autodetectflag instead of supplying a schema definition.
Examples:
The following command loads information from                        gs://mybucket/mydata.json                        into a tabular array named                        mytable                        in                        mydataset. The schema is divers in a local schema file named                        myschema.
                                                  bq load \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     gs://mybucket/mydata.json \     ./myschema                                                                    The following command loads data from                        gs://mybucket/mydata.json                        into a new ingestion-fourth dimension partitioned table named                        mytable                        in                        mydataset. The schema is defined in a local schema file named                        myschema.
                                                  bq load \     --source_format=NEWLINE_DELIMITED_JSON \     --time_partitioning_type=DAY \     mydataset.mytable \     gs://mybucket/mydata.json \     ./myschema                                                                    The following command loads data from                        gs://mybucket/mydata.json                        into a partitioned table named                        mytable                        in                        mydataset. The table is partitioned on the                        mytimestamp                        cavalcade. The schema is divers in a local schema file named                        myschema.
                                                  bq load \     --source_format=NEWLINE_DELIMITED_JSON \     --time_partitioning_field mytimestamp \     mydataset.mytable \     gs://mybucket/mydata.json \     ./myschema                                                                    The following command loads information from                        gs://mybucket/mydata.json                        into a table named                        mytable                        in                        mydataset. The schema is auto detected.
                                                  bq load \     --autodetect \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     gs://mybucket/mydata.json                                                                    The following control loads data from                        gs://mybucket/mydata.json                        into a table named                        mytable                        in                        mydataset. The schema is defined inline in the format                                                  FIELD:DATA_TYPE,                          FIELD:DATA_TYPE                        .
                                                  bq load \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     gs://mybucket/mydata.json \     qtr:String,sales:Float,year:Cord                                                                    The post-obit command loads data from multiple files in                        gs://mybucket/                        into a table named                        mytable                        in                        mydataset. The Cloud Storage URI uses a wildcard. The schema is auto detected.
                                                  bq load \     --autodetect \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     gs://mybucket/mydata*.json                                                                    The following command loads data from multiple files in                        gs://mybucket/                        into a table named                        mytable                        in                        mydataset. The command includes a comma- separated list of Cloud Storage URIs with wildcards. The schema is defined in a local schema file named                        myschema.
                                                  bq load \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     "gs://mybucket/00/*.json","gs://mybucket/01/*.json" \     ./myschema                                                                  API
-                           Create a loadjob that points to the source data in Cloud Storage.
-                           (Optional) Specify your location in the locationbelongings in thejobReferencesection of the chore resource.
-                           The source URIsproperty must exist fully qualified, in the formatgs://Bucket/OBJECT. Each URI can contain one '*' wildcard character.
-                           Specify the JSON data format past setting the sourceFormatproperty toNEWLINE_DELIMITED_JSON.
-                           To check the chore status, call jobs.get(JOB_ID*), replacingJOB_IDwith the ID of the job returned by the initial request.- If                              status.country = Washed, the task completed successfully.
- If the                              status.errorResultproperty is nowadays, the request failed, and that object includes information describing what went incorrect. When a request fails, no tabular array is created and no information is loaded.
- If                              status.errorResultis absent-minded, the chore finished successfully; although, in that location might have been some nonfatal errors, such equally problems importing a few rows. Nonfatal errors are listed in the returned job object'sstatus.errorsproperty.
 
- If                              
API notes:
-                           Load jobs are diminutive and consequent; if a load job fails, none of the data is bachelor, and if a load chore succeeds, all of the data is available. 
-                           As a best practice, generate a unique ID and pass information technology as jobReference.jobIdwhen callingjobs.insertto create a load chore. This arroyo is more than robust to network failure because the customer tin can poll or retry on the known chore ID.
-                           Calling jobs.inserton a given chore ID is idempotent. You can retry as many times as you like on the aforementioned chore ID, and at most, one of those operations succeed.
C#
Before trying this sample, follow the C# setup instructions in the BigQuery quickstart using customer libraries. For more information, meet the BigQuery C# API reference documentation.
Use theBigQueryClient.CreateLoadJob()                        method to first a load task from Cloud Storage. To use newline-delimited JSON, create a                        CreateLoadJobOptions                        object and set its                        SourceFormat                        property to                        FileFormat.NewlineDelimitedJson.                            Go
Before trying this sample, follow the Go setup instructions in the BigQuery quickstart using client libraries. For more than information, see the BigQuery Go API reference documentation.
Coffee
Before trying this sample, follow the Java setup instructions in the BigQuery quickstart using client libraries. For more than information, see the BigQuery Java API reference documentation.
Use the LoadJobConfiguration.builder(tableId, sourceUri) method to first a load job from Cloud Storage. To use newline-delimited JSON, apply the LoadJobConfiguration.setFormatOptions(FormatOptions.json()).Node.js
Before trying this sample, follow the Node.js setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery Node.js API reference documentation.
PHP
Before trying this sample, follow the PHP setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery PHP API reference documentation.
Python
Earlier trying this sample, follow the Python setup instructions in the BigQuery quickstart using client libraries. For more information, run across the BigQuery Python API reference documentation.
Use the Client.load_table_from_uri() method to beginning a load chore from Cloud Storage. To use newline-delimited JSON, set the LoadJobConfig.source_format belongings to the cordNEWLINE_DELIMITED_JSON                        and pass the task config every bit the                        job_config                        argument to the                        load_table_from_uri()                        method.                                                                                                                         Ruby
Before trying this sample, follow the Cherry setup instructions in the BigQuery quickstart using client libraries. For more data, see the BigQuery Ruby-red API reference documentation.
Use the Dataset.load_job() method to start a load job from Cloud Storage. To apply newline-delimited JSON, set theformat                        parameter to                        "json".                            Loading nested and repeated JSON information
BigQuery supports loading nested and repeated information from source formats that support object-based schemas, such every bit JSON, Avro, ORC, Parquet, Firestore, and Datastore.
One JSON object, including any nested/repeated fields, must appear on each line.
The following example shows sample nested/repeated data. This table contains information virtually people. It consists of the following fields:
-                       id
-                       first_name
-                       last_name
-                       dob(appointment of nascency)
-                       addresses(a nested and repeated field)-                           addresses.status(current or previous)
-                           addresses.address
-                           addresses.urban center
-                           addresses.state
-                           addresses.zippo
-                           addresses.numberOfYears(years at the accost)
 
-                           
The JSON data file would look like the post-obit. Detect that the accost field contains an array of values (indicated by                    [ ]).                  
{"id":"1","first_name":"John","last_name":"Doe","dob":"1968-01-22","addresses":[{"status":"current","address":"123 First Artery","city":"Seattle","state":"WA","zip":"11111","numberOfYears":"1"},{"condition":"previous","address":"456 Main Street","metropolis":"Portland","state":"OR","cypher":"22222","numberOfYears":"v"}]} {"id":"2","first_name":"Jane","last_name":"Doe","dob":"1980-ten-16","addresses":[{"status":"current","accost":"789 Whatsoever Avenue","metropolis":"New York","country":"NY","zip":"33333","numberOfYears":"two"},{"condition":"previous","accost":"321 Main Street","city":"Hoboken","state":"NJ","aught":"44444","numberOfYears":"3"}]}                                    The schema for this tabular array would look similar the following:
[     {         "name": "id",         "type": "STRING",         "way": "NULLABLE"     },     {         "proper noun": "first_name",         "type": "Cord",         "mode": "NULLABLE"     },     {         "name": "last_name",         "type": "Cord",         "fashion": "NULLABLE"     },     {         "proper name": "dob",         "type": "Date",         "manner": "NULLABLE"     },     {         "name": "addresses",         "blazon": "RECORD",         "mode": "REPEATED",         "fields": [             {                 "name": "status",                 "type": "STRING",                 "mode": "NULLABLE"             },             {                 "name": "accost",                 "blazon": "STRING",                 "way": "NULLABLE"             },             {                 "name": "city",                 "blazon": "Cord",                 "mode": "NULLABLE"             },             {                 "name": "land",                 "blazon": "STRING",                 "style": "NULLABLE"             },             {                 "name": "zip",                 "type": "STRING",                 "mode": "NULLABLE"             },             {                 "name": "numberOfYears",                 "type": "STRING",                 "manner": "NULLABLE"             }         ]     } ]                                    For data on specifying a nested and repeated schema, see Specifying nested and repeated fields.
Appending to or overwriting a table with JSON data
You lot can load additional data into a table either from source files or by appending query results.
In the Cloud Panel, utilise the Write preference selection to specify what action to have when you lot load information from a source file or from a query result.
You lot have the following options when you load boosted information into a table:
| Panel option | bqtool flag | BigQuery API property | Clarification | 
|---|---|---|---|
| Write if empty | Not supported | WRITE_EMPTY | Writes the data only if the table is empty. | 
| Append to table | --noreplaceor--replace=false; if--[no]replaceis unspecified, the default is suspend | WRITE_APPEND | (Default) Appends the information to the end of the table. | 
| Overwrite table | --supplantor--replace=true | WRITE_TRUNCATE | Erases all existing data in a table before writing the new data. This action besides deletes the table schema and removes any Cloud KMS primal. | 
If you load data into an existing table, the load job tin can append the data or overwrite the table.
Yous can append or overwrite a tabular array past using one of the post-obit:
- The Deject Console
- The                      bqcommand-line tool'southwardbq loadcontrol
- The                      jobs.insertAPI method and configuring aloadchore
- The customer libraries
Console
-                           In the Cloud Console, open up the BigQuery page. Become to BigQuery 
-                           In the Explorer panel, aggrandize your project and select a dataset. 
-                           Expand the Actions option and click Open. 
-                           In the details console, click Create table . 
-                           On the Create tabular array page, in the Source section: -                               For Create table from, select Cloud Storage. 
-                               In the source field, browse to or enter the Cloud Storage URI. You cannot include multiple URIs in the Cloud Console, just wildcards are supported. The Cloud Storage bucket must be in the same location as the dataset that contains the table you lot're appending or overwriting.   
-                               For File format, select JSON (Newline delimited). 
 
-                               
-                           On the Create tabular array page, in the Destination section: -                               For Dataset name, choose the advisable dataset.   
-                               In the Table proper name field, enter the name of the table you're appending or overwriting in BigQuery. 
-                               Verify that Table blazon is set to Native table. 
 
-                               
-                           In the Schema section, for Machine discover, check Schema and input parameters to enable schema auto detection. Alternatively, you can manually enter the schema definition by: -                               Enabling Edit every bit text and entering the table schema equally a JSON assortment.   
-                               Using Add field to manually input the schema.   
 
-                               
-                           For Sectionalization and cluster settings, leave the default values. Y'all cannot convert a tabular array to a partitioned or amassed table by appending or overwriting information technology. The Deject Panel does non back up appending to or overwriting partitioned or clustered tables in a load job. 
-                           Click Advanced options. - For Write preference, choose Append to table or Overwrite table.
- For                              Number of errors allowed, accept the default value of                              0or enter the maximum number of rows containing errors that can be ignored. If the number of rows with errors exceeds this value, the task results in aninvalidmessage and fails.
- For Unknown values, check Ignore unknown values to ignore any values in a row that are non present in the table's schema.
-                               For Encryption, click Customer-managed cardinal to use a Deject Key Management Service key. If you get out the Google-managed fundamental setting, BigQuery encrypts the data at rest.   
 
-                           Click Create table. 
bq
Use the                        bq load                        control, specify                        NEWLINE_DELIMITED_JSON                        using the                        --source_format                        flag, and include a Cloud Storage URI. Y'all tin include a unmarried URI, a comma-separated list of URIs, or a URI containing a wildcard.
Supply the schema inline, in a schema definition file, or employ schema auto-notice.
Specify the                        --supervene upon                        flag to overwrite the table. Employ the                        --noreplace                        flag to append information to the table. If no flag is specified, the default is to append information.
It is possible to modify the table's schema when you append or overwrite information technology. For more information on supported schema changes during a load operation, come across Modifying table schemas.
(Optional) Supply the                        --location                        flag and set up the value to your location.
Other optional flags include:
-                           --max_bad_records: An integer that specifies the maximum number of bad records allowed before the entire job fails. The default value is0. At most, 5 errors of any type are returned regardless of the--max_bad_recordsvalue.
-                           --ignore_unknown_values: When specified, allows and ignores extra, unrecognized values in CSV or JSON information.
-                           --autodetect: When specified, enable schema auto-detection for CSV and JSON information.
-                           --destination_kms_key: The Cloud KMS key for encryption of the table data.
bq --location=LOCATION load \ --[no]replace \ --source_format=FORMAT \ DATASET.Table \ PATH_TO_SOURCE \ SCHEMA
Replace the following:
-                           LOCATION: your location. The--locationflag is optional. Y'all can set a default value for the location using the .bigqueryrc file.
-                           FORMAT:NEWLINE_DELIMITED_JSON.
-                           DATASET: an existing dataset.
-                           Tabular array: the name of the table into which you're loading data.
-                           PATH_TO_SOURCE: a fully qualified Deject Storage URI or a comma-separated listing of URIs. Wildcards are also supported.
-                           SCHEMA: a valid schema. The schema can be a local JSON file, or information technology can be typed inline as part of the command. Y'all can also use the--autodetectflag instead of supplying a schema definition.
Examples:
The following command loads data from                        gs://mybucket/mydata.json                        and overwrites a table named                        mytable                        in                        mydataset. The schema is divers using schema car-detection.
                                                  bq load \     --autodetect \     --supervene upon \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     gs://mybucket/mydata.json                                                                    The following control loads data from                        gs://mybucket/mydata.json                        and appends data to a table named                        mytable                        in                        mydataset. The schema is defined using a JSON schema file —                        myschema.
                                                  bq load \     --noreplace \     --source_format=NEWLINE_DELIMITED_JSON \     mydataset.mytable \     gs://mybucket/mydata.json \     ./myschema                                                                  API
-                           Create a loadjob that points to the source data in Cloud Storage.
-                           (Optional) Specify your location in the locationholding in thejobReferencesection of the job resources.
-                           The source URIsproperty must be fully-qualified, in the formatgs://Saucepan/OBJECT. You can include multiple URIs as a comma-separated list. The wildcards are too supported.
-                           Specify the data format by setting the configuration.load.sourceFormatproperty toNEWLINE_DELIMITED_JSON.
-                           Specify the write preference by setting the configuration.load.writeDispositionholding toWRITE_TRUNCATEorWRITE_APPEND.
Go
Before trying this sample, follow the Go setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery Go API reference documentation.
Java
Node.js
Before trying this sample, follow the Node.js setup instructions in the BigQuery quickstart using customer libraries. For more than information, see the BigQuery Node.js API reference documentation.
PHP
Earlier trying this sample, follow the PHP setup instructions in the BigQuery quickstart using client libraries. For more data, run into the BigQuery PHP API reference documentation.
Python
To replace the rows in an existing table, set the LoadJobConfig.write_disposition belongings to the string                        WRITE_TRUNCATE.
Before trying this sample, follow the Python setup instructions in the BigQuery quickstart using client libraries. For more than information, see the BigQuery Python API reference documentation.
Ruby
To replace the rows in an existing table, set the                        write                        parameter of Table.load_job() to                        "WRITE_TRUNCATE".
Before trying this sample, follow the Cherry-red setup instructions in the BigQuery quickstart using client libraries. For more data, encounter the BigQuery Ruby API reference documentation.
Loading hive-partitioned JSON data
BigQuery supports loading hive partitioned JSON data stored on Cloud Storage and populates the hive sectionalisation columns as columns in the destination BigQuery managed table. For more information, encounter Loading externally partitioned information.
Details of loading JSON information
This department describes how BigQuery parses various data types when loading JSON data.
Data types
Boolean. BigQuery can parse any of the following pairs for Boolean data: i or 0, truthful or false, t or f, yes or no, or y or northward (all case insensitive). Schema autodetection automatically detects any of these except 0 and one.
Bytes. Columns with BYTES types must be encoded as Base64.
                    Date. Columns with DATE types must exist in the format                    YYYY-MM-DD.
                    Datetime. Columns with DATETIME types must exist in the format                    YYYY-MM-DD HH:MM:SS[.SSSSSS].
Geography. Columns with GEOGRAPHY types must contain strings in one of the following formats:
- Well-known text (WKT)
- Well-known binary (WKB)
- GeoJSON
If you use WKB, the value should be hex encoded.
The following listing shows examples of valid data:
- WKT:                      POINT(1 2)
- GeoJSON:                      { "type": "Point", "coordinates": [1, 2] }
- Hex encoded WKB:                      0101000000feffffffffffef3f0000000000000040
Earlier loading GEOGRAPHY data, also read Loading geospatial data.
                    Interval. Columns with INTERVAL types must be in ISO 8601 format                    PYMDTHMS, where:
- P = Designator that indicates that the value represents a duration. Yous must e'er include this.
- Y = Twelvemonth
- M = Month
- D = Day
- T = Designator that denotes the time portion of the duration. Y'all must always include this.
- H = Hour
- M = Minute
- S = Second. Seconds can exist denoted as a whole value or every bit a fractional value of upwards to half dozen digits, at microsecond precision.
You can indicate a negative value by prepending a dash (-).
The following list shows examples of valid data:
-                       P-10000Y0M-3660000DT-87840000H0M0S
-                       P0Y0M0DT0H0M0.000001S
-                       P10000Y0M3660000DT87840000H0M0S
To load INTERVAL information, you must use the                    bq load                    command and use the                    --schema                    flag to specify a schema. Y'all can't upload INTERVAL data by using the panel.
                    Time. Columns with Time types must be in the format                    HH:MM:SS[.SSSSSS].
Timestamp. BigQuery accepts diverse timestamp formats. The timestamp must include a appointment portion and a fourth dimension portion.
-                       The date portion tin be formatted as YYYY-MM-DDorYYYY/MM/DD.
-                       The timestamp portion must be formatted as HH:MM[:SS[.SSSSSS]](seconds and fractions of seconds are optional).
-                       The engagement and time must be separated by a infinite or 'T'. 
-                       Optionally, the engagement and time can be followed by a UTC beginning or the UTC zone designator ( Z). For more information, encounter Time zones.
For instance, any of the following are valid timestamp values:
- 2018-08-19 12:11
- 2018-08-xix 12:xi:35
- 2018-08-nineteen 12:11:35.22
- 2018/08/19 12:11
- 2018-07-05 12:54:00 UTC
- 2018-08-19 07:eleven:35.220 -05:00
- 2018-08-19T12:11:35.220Z
If you lot provide a schema, BigQuery as well accepts Unix epoch time for timestamp values. However, schema autodetection doesn't detect this example, and treats the value as a numeric or string type instead.
Examples of Unix epoch timestamp values:
- 1534680695
- 1.534680695e11
                    Array                    (repeated field). The value must be a JSON array or                    zero. JSON                    null                    is converted to SQL                    NULL. The array itself cannot incorporate                    nil                    values.
JSON options
To change how BigQuery parses JSON information, specify additional options in the Cloud Console, the                    bq                    command-line tool, the API, or the client libraries.
| JSON option | Console option | bqtool flag | BigQuery API property | Clarification | 
|---|---|---|---|---|
| Number of bad records allowed | Number of errors immune | --max_bad_records | maxBadRecords(Java,       Python) | (Optional) The maximum number of bad records that BigQuery can ignore when running the task. If the number of bad records exceeds this value, an invalid error is returned in the job result. The default value is `0`, which requires that all records are valid. | 
| Unknown values | Ignore unknown values | --ignore_unknown_values | ignoreUnknownValues(Java,       Python) | (Optional) Indicates whether BigQuery should permit actress values that are not represented in the table schema. If true, the actress values are ignored. If false, records with extra columns are treated as bad records, and if in that location are as well many bad records, an invalid error is returned in the task result. The default value is simulated. The `sourceFormat` property determines what BigQuery treats as an extra value: CSV: trailing columns, JSON: named values that don't match any column names. | 
Except every bit otherwise noted, the content of this folio is licensed nether the Artistic Commons Attribution iv.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2022-04-14 UTC.
Source: https://cloud.google.com/bigquery/docs/loading-data-cloud-storage-json
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