After the backup is finished, the target directory will contain files such as the following, assuming you have a single InnoDB tabletest.tbl1and you are using MySQL’s innodb_file_per_table option: $ls-lh/data/backups/ The result should look like this: ...
-- External File Format for PARQUETCREATEEXTERNALFILEFORMATParquetFileFormatWITH(FORMAT_TYPE = PARQUET); GOCREATEEXTERNALTABLEDelta_to_ParquetWITH( LOCATION ='/backup/sales.parquet', DATA_SOURCE = s3_parquet, FILE_FORMAT = ParquetFileFormat )ASSELECT*FROMOPENROWSET...
-- External File Format for PARQUETCREATEEXTERNALFILEFORMATParquetFileFormatWITH(FORMAT_TYPE = PARQUET); GOCREATEEXTERNALTABLEDelta_to_ParquetWITH( LOCATION ='/backup/sales.parquet', DATA_SOURCE = s3_parquet, FILE_FORMAT = ParquetFileFormat )ASSELECT*FROMOPENROWSET(BULK'/delta/sales_fy22/',FORMAT...
Important: Make a backup copy of any tables involved before you run a data-definition query. DDL keywords Keyword Use CREATE Create an index or table that does not already exist. ALTER Modify an existing table or column. DROP Delete an existing ta...
In such setup, ensure that a virtual network link for Azure Private DNS zone exists as mentioned in this section. The following table lists the Azure Private DNS zones required by Azure Backup: Expand table ZoneService privatelink.<geo>.backup.windowsazure.com Backup privatelink.blob.core....
Sometimes, the process of building and using queries in Access is a simple matter of selecting fields from a table, perhaps applying some criteria, and then viewing the results. But what if, as is more often the case, the data you need is spread out in more than one table?...
To back up only thetest.t1table, use the following command: $xtrabackup--backup--datadir=/var/lib/mysql--target-dir=/data/backups/\--tables="^test[.]t1" The-–tables-fileoption¶ The--tables-fileoption specifies a file that can contain multiple table names, one table name per line...
Before starting a backup, make sure that the cluster is properly configured for performing one. (SeeSection 25.6.8.3, “Configuration for NDB Cluster Backups”.) TheSTART BACKUPcommand is used to create a backup, and has the syntax shown here: ...
At this point in the backup process the cluster has received and processed the backup request. It does not mean that the backup has finished. An example of this statement is shown here: Node 2: Backup 1 started from node 1 The management client indicates with a message like this one ...
是从左到右执行的,这就意味着,如果你希望交换两个表名,你不得不这样做: 402 403 RENAME TABLE old_table TO backup_table, 404 new_table TO old_table, 405 backup_table TO new_table; 406 407 只要两个数据库在同一个磁盘上,你也可以从一个数据库更名到另一个数据库: 408 409 RENAME TABLE ...