Update an expiration time

  import 
  
 ( 
  
 "context" 
  
 "fmt" 
  
 "time" 
  
 "cloud.google.com/go/bigquery" 
 ) 
 // updateTableExpiration demonstrates setting the table expiration of a table to a specific point in time 
 // in the future, at which time it will be deleted. 
 func 
  
 updateTableExpiration 
 ( 
 projectID 
 , 
  
 datasetID 
 , 
  
 tableID 
  
 string 
 ) 
  
 error 
  
 { 
  
 // projectID := "my-project-id" 
  
 // datasetID := "mydataset" 
  
 // tableID := "mytable" 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 bigquery 
 . 
 NewClient 
 ( 
 ctx 
 , 
  
 projectID 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "bigquery.NewClient: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 defer 
  
 client 
 . 
 Close 
 () 
  
 tableRef 
  
 := 
  
 client 
 . 
 Dataset 
 ( 
 datasetID 
 ). 
 Table 
 ( 
 tableID 
 ) 
  
 meta 
 , 
  
 err 
  
 := 
  
 tableRef 
 . 
 Metadata 
 ( 
 ctx 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 err 
  
 } 
  
 update 
  
 := 
  
 bigquery 
 . 
  TableMetadataToUpdate 
 
 { 
  
 ExpirationTime 
 : 
  
 time 
 . 
 Now 
 (). 
 Add 
 ( 
 time 
 . 
 Duration 
 ( 
 5 
 * 
 24 
 ) 
  
 * 
  
 time 
 . 
 Hour 
 ), 
  
 // table expiration in 5 days. 
  
 } 
  
 if 
  
 _ 
 , 
  
 err 
  
 = 
  
 tableRef 
 . 
 Update 
 ( 
 ctx 
 , 
  
 update 
 , 
  
 meta 
 . 
 ETag 
 ); 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 err 
  
 } 
  
 return 
  
 nil 
 } 
 

  import 
  
 com.google.cloud.bigquery. BigQuery 
 
 ; 
 import 
  
 com.google.cloud.bigquery. BigQueryException 
 
 ; 
 import 
  
 com.google.cloud.bigquery. BigQueryOptions 
 
 ; 
 import 
  
 com.google.cloud.bigquery. Table 
 
 ; 
 import 
  
 java.util.concurrent.TimeUnit 
 ; 
 public 
  
 class 
 UpdateTableExpiration 
  
 { 
  
 public 
  
 static 
  
 void 
  
 main 
 ( 
 String 
 [] 
  
 args 
 ) 
  
 { 
  
 // TODO(developer): Replace these variables before running the sample. 
  
 String 
  
 datasetName 
  
 = 
  
 "MY_DATASET_NAME" 
 ; 
  
 String 
  
 tableName 
  
 = 
  
 "MY_TABLE_NAME" 
 ; 
  
 // Update table expiration to one day. 
  
 Long 
  
 newExpiration 
  
 = 
  
 TimeUnit 
 . 
 MILLISECONDS 
 . 
  convert 
 
 ( 
 1 
 , 
  
 TimeUnit 
 . 
 DAYS 
 ) 
  
 + 
  
 System 
 . 
 currentTimeMillis 
 (); 
  
 updateTableExpiration 
 ( 
 datasetName 
 , 
  
 tableName 
 , 
  
 newExpiration 
 ); 
  
 } 
  
 public 
  
 static 
  
 void 
  
 updateTableExpiration 
 ( 
  
 String 
  
 datasetName 
 , 
  
 String 
  
 tableName 
 , 
  
 Long 
  
 newExpiration 
 ) 
  
 { 
  
 try 
  
 { 
  
 // Initialize client that will be used to send requests. This client only needs to be created 
  
 // once, and can be reused for multiple requests. 
  
  BigQuery 
 
  
 bigquery 
  
 = 
  
  BigQueryOptions 
 
 . 
 getDefaultInstance 
 (). 
 getService 
 (); 
  
  Table 
 
  
 table 
  
 = 
  
 bigquery 
 . 
  getTable 
 
 ( 
 datasetName 
 , 
  
 tableName 
 ); 
  
 bigquery 
 . 
  update 
 
 ( 
 table 
 . 
 toBuilder 
 (). 
 setExpirationTime 
 ( 
 newExpiration 
 ). 
 build 
 ()); 
  
 System 
 . 
 out 
 . 
 println 
 ( 
 "Table expiration updated successfully to " 
  
 + 
  
 newExpiration 
 ); 
  
 } 
  
 catch 
  
 ( 
  BigQueryException 
 
  
 e 
 ) 
  
 { 
  
 System 
 . 
 out 
 . 
 println 
 ( 
 "Table expiration was not updated \n" 
  
 + 
  
 e 
 . 
 toString 
 ()); 
  
 } 
  
 } 
 } 
 

  // Import the Google Cloud client library 
 const 
  
 { 
 BigQuery 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/bigquery 
' 
 ); 
 const 
  
 bigquery 
  
 = 
  
 new 
  
  BigQuery 
 
 (); 
 async 
  
 function 
  
 updateTableExpiration 
 () 
  
 { 
  
 // Updates a table's expiration. 
  
 /** 
 * TODO(developer): Uncomment the following lines before running the sample. 
 */ 
  
 // const datasetId = 'my_dataset', // Existing dataset 
  
 // const tableId = 'my_table', // Existing table 
  
 // const expirationTime = Date.now() + 1000 * 60 * 60 * 24 * 5 // 5 days from current time in ms 
  
 // Retreive current table metadata 
  
 const 
  
 table 
  
 = 
  
 bigquery 
 . 
 dataset 
 ( 
 datasetId 
 ). 
 table 
 ( 
 tableId 
 ); 
  
 const 
  
 [ 
 metadata 
 ] 
  
 = 
  
 await 
  
 table 
 . 
 getMetadata 
 (); 
  
 // Set new table expiration to 5 days from current time 
  
 metadata 
 . 
 expirationTime 
  
 = 
  
 expirationTime 
 . 
 toString 
 (); 
  
 const 
  
 [ 
 apiResponse 
 ] 
  
 = 
  
 await 
  
 table 
 . 
 setMetadata 
 ( 
 metadata 
 ); 
  
 const 
  
 newExpirationTime 
  
 = 
  
 apiResponse 
 . 
 expirationTime 
 ; 
  
 console 
 . 
 log 
 ( 
 ` 
 ${ 
 tableId 
 } 
 expiration: 
 ${ 
 newExpirationTime 
 } 
 ` 
 ); 
 } 
 

  from 
  
 google.cloud 
  
 import 
  bigquery 
 
 client 
 = 
  bigquery 
 
 . 
  Client 
 
 () 
 # TODO(dev): Change table_id to the full name of the table you want to update. 
 table_id 
 = 
 "your-project.your_dataset.your_table_name" 
 # TODO(dev): Set table to expire for desired days days from now. 
 expiration 
 = 
 datetime 
 . 
 datetime 
 . 
 now 
 ( 
 datetime 
 . 
 timezone 
 . 
 utc 
 ) 
 + 
 datetime 
 . 
 timedelta 
 ( 
 days 
 = 
 5 
 ) 
 table 
 = 
 client 
 . 
  get_table 
 
 ( 
 table_id 
 ) 
 # Make an API request. 
 table 
 . 
 expires 
 = 
 expiration 
 table 
 = 
 client 
 . 
  update_table 
 
 ( 
 table 
 , 
 [ 
 "expires" 
 ]) 
 # API request 
 print 
 ( 
 f 
 "Updated 
 { 
 table_id 
 } 
 , expires 
 { 
 table 
 . 
 expires 
 } 
 ." 
 )