Mutations update data with TIMESTAMP

  void 
  
 UpdateDataWithTimestamp 
 ( 
 google 
 :: 
 cloud 
 :: 
 spanner 
 :: 
 Client 
  
 client 
 ) 
  
 { 
  
 namespace 
  
 spanner 
  
 = 
  
 :: 
 google 
 :: 
 cloud 
 :: 
 spanner 
 ; 
  
 auto 
  
 commit_result 
  
 = 
  
 client 
 . 
 Commit 
 ( 
 spanner 
 :: 
 Mutations 
 { 
  
 spanner 
 :: 
 UpdateMutationBuilder 
 ( 
  
 "Albums" 
 , 
  
 { 
 "SingerId" 
 , 
  
 "AlbumId" 
 , 
  
 "MarketingBudget" 
 , 
  
 "LastUpdateTime" 
 }) 
  
 . 
 EmplaceRow 
 ( 
 1 
 , 
  
 1 
 , 
  
 1000000 
 , 
  
 spanner 
 :: 
 CommitTimestamp 
 {}) 
  
 . 
 EmplaceRow 
 ( 
 2 
 , 
  
 2 
 , 
  
 750000 
 , 
  
 spanner 
 :: 
 CommitTimestamp 
 {}) 
  
 . 
 Build 
 ()}); 
  
 if 
  
 ( 
 ! 
 commit_result 
 ) 
  
 throw 
  
 std 
 :: 
 move 
 ( 
 commit_result 
 ). 
 status 
 (); 
  
 std 
 :: 
 cout 
 << 
 "Update was successful [spanner_update_data_with_timestamp_column] 
 \n 
 " 
 ; 
 } 
 

  using 
  
  Google.Cloud.Spanner.Data 
 
 ; 
 using 
  
 System 
 ; 
 using 
  
 System.Threading.Tasks 
 ; 
 public 
  
 class 
  
 UpdateDataWithTimestampColumnAsyncSample 
 { 
  
 public 
  
 async 
  
 Task<int> 
  
 UpdateDataWithTimestampColumnAsync 
 ( 
 string 
  
 projectId 
 , 
  
 string 
  
 instanceId 
 , 
  
 string 
  
 databaseId 
 ) 
  
 { 
  
 string 
  
 connectionString 
  
 = 
  
 $"Data Source=projects/{projectId}/instances/{instanceId}/databases/{databaseId}" 
 ; 
  
 using 
  
 var 
  
 connection 
  
 = 
  
 new 
  
  SpannerConnection 
 
 ( 
 connectionString 
 ); 
  
 var 
  
 rowCount 
  
 = 
  
 0 
 ; 
  
 using 
  
 var 
  
 updateCmd1 
  
 = 
  
 connection 
 . 
  CreateUpdateCommand 
 
 ( 
 "Albums" 
 , 
  
 new 
  
  SpannerParameterCollection 
 
  
 { 
  
 { 
  
 "SingerId" 
 , 
  
  SpannerDbType 
 
 . 
  Int64 
 
 , 
  
 1 
  
 }, 
  
 { 
  
 "AlbumId" 
 , 
  
  SpannerDbType 
 
 . 
  Int64 
 
 , 
  
 1 
  
 }, 
  
 { 
  
 "MarketingBudget" 
 , 
  
  SpannerDbType 
 
 . 
  Int64 
 
 , 
  
 1000000 
  
 }, 
  
 { 
  
 "LastUpdateTime" 
 , 
  
  SpannerDbType 
 
 . 
  Timestamp 
 
 , 
  
  SpannerParameter 
 
 . 
  CommitTimestamp 
 
  
 }, 
  
 }); 
  
 rowCount 
  
 += 
  
 await 
  
 updateCmd1 
 . 
 ExecuteNonQueryAsync 
 (); 
  
 using 
  
 var 
  
 updateCmd2 
  
 = 
  
 connection 
 . 
  CreateUpdateCommand 
 
 ( 
 "Albums" 
 , 
  
 new 
  
  SpannerParameterCollection 
 
  
 { 
  
 { 
  
 "SingerId" 
 , 
  
  SpannerDbType 
 
 . 
  Int64 
 
 , 
  
 2 
  
 }, 
  
 { 
  
 "AlbumId" 
 , 
  
  SpannerDbType 
 
 . 
  Int64 
 
 , 
  
 2 
  
 }, 
  
 { 
  
 "MarketingBudget" 
 , 
  
  SpannerDbType 
 
 . 
  Int64 
 
 , 
  
 750000 
  
 }, 
  
 { 
  
 "LastUpdateTime" 
 , 
  
  SpannerDbType 
 
 . 
  Timestamp 
 
 , 
  
  SpannerParameter 
 
 . 
  CommitTimestamp 
 
  
 }, 
  
 }); 
  
 rowCount 
  
 += 
  
 await 
  
 updateCmd2 
 . 
 ExecuteNonQueryAsync 
 (); 
  
 Console 
 . 
 WriteLine 
 ( 
 "Updated data." 
 ); 
  
 return 
  
 rowCount 
 ; 
  
 } 
 } 
 

  import 
  
 ( 
  
 "context" 
  
 "io" 
  
 "cloud.google.com/go/spanner" 
 ) 
 func 
  
 updateWithTimestamp 
 ( 
 w 
  
 io 
 . 
 Writer 
 , 
  
 db 
  
 string 
 ) 
  
 error 
  
 { 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 spanner 
 . 
 NewClient 
 ( 
 ctx 
 , 
  
 db 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 err 
  
 } 
  
 defer 
  
 client 
 . 
 Close 
 () 
  
 cols 
  
 := 
  
 [] 
 string 
 { 
 "SingerId" 
 , 
  
 "AlbumId" 
 , 
  
 "MarketingBudget" 
 , 
  
 "LastUpdateTime" 
 } 
  
 _ 
 , 
  
 err 
  
 = 
  
 client 
 . 
  Apply 
 
 ( 
 ctx 
 , 
  
 [] 
 * 
 spanner 
 . 
 Mutation 
 { 
  
 spanner 
 . 
 Update 
 ( 
 "Albums" 
 , 
  
 cols 
 , 
  
 [] 
 interface 
 {}{ 
 1 
 , 
  
 1 
 , 
  
 1000000 
 , 
  
 spanner 
 . 
  CommitTimestamp 
 
 }), 
  
 spanner 
 . 
 Update 
 ( 
 "Albums" 
 , 
  
 cols 
 , 
  
 [] 
 interface 
 {}{ 
 2 
 , 
  
 2 
 , 
  
 750000 
 , 
  
 spanner 
 . 
  CommitTimestamp 
 
 }), 
  
 }) 
  
 return 
  
 err 
 } 
 

  static 
  
 void 
  
 updateWithTimestamp 
 ( 
 DatabaseClient 
  
 dbClient 
 ) 
  
 { 
  
 // Mutation can be used to update/insert/delete a single row in a table. Here we use 
  
 // newUpdateBuilder to create update mutations. 
  
 List<Mutation> 
  
 mutations 
  
 = 
  
 Arrays 
 . 
 asList 
 ( 
  
 Mutation 
 . 
 newUpdateBuilder 
 ( 
 "Albums" 
 ) 
  
 . 
 set 
 ( 
 "SingerId" 
 ) 
  
 . 
 to 
 ( 
 1 
 ) 
  
 . 
 set 
 ( 
 "AlbumId" 
 ) 
  
 . 
 to 
 ( 
 1 
 ) 
  
 . 
 set 
 ( 
 "MarketingBudget" 
 ) 
  
 . 
 to 
 ( 
 1000000 
 ) 
  
 . 
 set 
 ( 
 "LastUpdateTime" 
 ) 
  
 . 
 to 
 ( 
 Value 
 . 
 COMMIT_TIMESTAMP 
 ) 
  
 . 
 build 
 (), 
  
 Mutation 
 . 
 newUpdateBuilder 
 ( 
 "Albums" 
 ) 
  
 . 
 set 
 ( 
 "SingerId" 
 ) 
  
 . 
 to 
 ( 
 2 
 ) 
  
 . 
 set 
 ( 
 "AlbumId" 
 ) 
  
 . 
 to 
 ( 
 2 
 ) 
  
 . 
 set 
 ( 
 "MarketingBudget" 
 ) 
  
 . 
 to 
 ( 
 750000 
 ) 
  
 . 
 set 
 ( 
 "LastUpdateTime" 
 ) 
  
 . 
 to 
 ( 
 Value 
 . 
 COMMIT_TIMESTAMP 
 ) 
  
 . 
 build 
 ()); 
  
 // This writes all the mutations to Cloud Spanner atomically. 
  
 dbClient 
 . 
 write 
 ( 
 mutations 
 ); 
 } 
 

  // ... 
 // Imports the Google Cloud client library 
 const 
  
 { 
 Spanner 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/spanner 
' 
 ); 
 /** 
 * TODO(developer): Uncomment the following lines before running the sample. 
 */ 
 // const projectId = 'my-project-id'; 
 // const instanceId = 'my-instance'; 
 // const databaseId = 'my-database'; 
 // Creates a client 
 const 
  
 spanner 
  
 = 
  
 new 
  
  Spanner 
 
 ({ 
  
 projectId 
 : 
  
 projectId 
 , 
 }); 
 // Gets a reference to a Cloud Spanner instance and database 
 const 
  
 instance 
  
 = 
  
 spanner 
 . 
 instance 
 ( 
 instanceId 
 ); 
 const 
  
 database 
  
 = 
  
 instance 
 . 
 database 
 ( 
 databaseId 
 ); 
 // Update a row in the Albums table 
 // Note: Cloud Spanner interprets Node.js numbers as FLOAT64s, so they 
 // must be converted to strings before being inserted as INT64s 
 const 
  
 albumsTable 
  
 = 
  
 database 
 . 
 table 
 ( 
 'Albums' 
 ); 
 const 
  
 data 
  
 = 
  
 [ 
  
 { 
  
 SingerId 
 : 
  
 '1' 
 , 
  
 AlbumId 
 : 
  
 '1' 
 , 
  
 MarketingBudget 
 : 
  
 '1000000' 
 , 
  
 LastUpdateTime 
 : 
  
 'spanner.commit_timestamp()' 
 , 
  
 }, 
  
 { 
  
 SingerId 
 : 
  
 '2' 
 , 
  
 AlbumId 
 : 
  
 '2' 
 , 
  
 MarketingBudget 
 : 
  
 '750000' 
 , 
  
 LastUpdateTime 
 : 
  
 'spanner.commit_timestamp()' 
 , 
  
 }, 
 ]; 
 try 
  
 { 
  
 await 
  
 albumsTable 
 . 
 update 
 ( 
 data 
 ); 
  
 console 
 . 
 log 
 ( 
 'Updated data.' 
 ); 
 } 
  
 catch 
  
 ( 
 err 
 ) 
  
 { 
  
 console 
 . 
 error 
 ( 
 'ERROR:' 
 , 
  
 err 
 ); 
 } 
  
 finally 
  
 { 
  
 // Close the database when finished 
  
 database 
 . 
 close 
 (); 
 } 
 

  use Google\Cloud\Spanner\SpannerClient; 
 /** 
 * Updates sample data in a table with a commit timestamp column. 
 * 
 * Before executing this method, a new column MarketingBudget has to be added to the Albums 
 * table by applying the DDL statement "ALTER TABLE Albums ADD COLUMN MarketingBudget INT64". 
 * 
 * In addition this update expects the LastUpdateTime column added by applying the DDL statement 
 * "ALTER TABLE Albums ADD COLUMN LastUpdateTime TIMESTAMP OPTIONS (allow_commit_timestamp=true)" 
 * 
 * Example: 
 * ``` 
 * update_data_with_timestamp_column($instanceId, $databaseId); 
 * ``` 
 * 
 * @param string $instanceId The Spanner instance ID. 
 * @param string $databaseId The Spanner database ID. 
 */ 
 function update_data_with_timestamp_column(string $instanceId, string $databaseId): void 
 { 
 $spanner = new SpannerClient(); 
 $instance = $spanner->instance($instanceId); 
 $database = $instance->database($databaseId); 
 $operation = $database->transaction(['singleUse' => true]) 
 ->updateBatch('Albums', [ 
 ['SingerId' => 1, 'AlbumId' => 1, 'MarketingBudget' => 1000000, 'LastUpdateTime' => $spanner->commitTimestamp()], 
 ['SingerId' => 2, 'AlbumId' => 2, 'MarketingBudget' => 750000, 'LastUpdateTime' => $spanner->commitTimestamp()], 
 ]) 
 ->commit(); 
 print('Updated data.' . PHP_EOL); 
 } 
 

  def 
  
 update_data_with_timestamp 
 ( 
 instance_id 
 , 
 database_id 
 ): 
  
 """Updates Performances tables in the database with the COMMIT_TIMESTAMP 
 column. 
 This updates the `MarketingBudget` column which must be created before 
 running this sample. You can add the column by running the `add_column` 
 sample or by running this DDL statement against your database: 
 ALTER TABLE Albums ADD COLUMN MarketingBudget INT64 
 In addition this update expects the LastUpdateTime column added by 
 applying this DDL statement against your database: 
 ALTER TABLE Albums ADD COLUMN LastUpdateTime TIMESTAMP 
 OPTIONS(allow_commit_timestamp=true) 
 """ 
 spanner_client 
 = 
 spanner 
 . 
 Client 
 () 
 instance 
 = 
 spanner_client 
 . 
 instance 
 ( 
 instance_id 
 ) 
 database 
 = 
 instance 
 . 
 database 
 ( 
 database_id 
 ) 
 with 
 database 
 . 
 batch 
 () 
 as 
 batch 
 : 
 batch 
 . 
 update 
 ( 
 table 
 = 
 "Albums" 
 , 
 columns 
 = 
 ( 
 "SingerId" 
 , 
 "AlbumId" 
 , 
 "MarketingBudget" 
 , 
 "LastUpdateTime" 
 ), 
 values 
 = 
 [ 
 ( 
 1 
 , 
 1 
 , 
 1000000 
 , 
 spanner 
 . 
 COMMIT_TIMESTAMP 
 ), 
 ( 
 2 
 , 
 2 
 , 
 750000 
 , 
 spanner 
 . 
 COMMIT_TIMESTAMP 
 ), 
 ], 
 ) 
 print 
 ( 
 "Updated data." 
 ) 
 

  # project_id  = "Your Google Cloud project ID" 
 # instance_id = "Your Spanner instance ID" 
 # database_id = "Your Spanner database ID" 
 require 
  
 "google/cloud/spanner" 
 spanner 
  
 = 
  
 Google 
 :: 
 Cloud 
 :: 
  Spanner 
 
 . 
 new 
  
 project 
 : 
  
 project_id 
 client 
  
 = 
  
 spanner 
 . 
  client 
 
  
 instance_id 
 , 
  
 database_id 
 commit_timestamp 
  
 = 
  
 client 
 . 
 commit_timestamp 
 client 
 . 
 commit 
  
 do 
  
 | 
 c 
 | 
  
 c 
 . 
 update 
  
 "Albums" 
 , 
  
 [ 
  
 { 
  
 SingerId 
 : 
  
 1 
 , 
  
 AlbumId 
 : 
  
 1 
 , 
  
 MarketingBudget 
 : 
  
 100_000 
 , 
  
 LastUpdateTime 
 : 
  
 commit_timestamp 
  
 }, 
  
 { 
  
 SingerId 
 : 
  
 2 
 , 
  
 AlbumId 
 : 
  
 2 
 , 
  
 MarketingBudget 
 : 
  
 750_000 
 , 
  
 LastUpdateTime 
 : 
  
 commit_timestamp 
  
 } 
  
 ] 
 end 
 puts 
  
 "Updated data"