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How to Get the Total Size In Bytes For A Particular Table In Teradata?

3 minutes read

To get the total size in bytes for a particular table in Teradata, you can use the SQL query:


SELECT SUM(CurrentPerm) FROM DBC.TVFields WHERE DatabaseName='<database_name>' AND TableName='<table_name>';


This query will return the total size in bytes for the specified table by summing up the CurrentPerm column from the DBC.TVFields system table for that table in Teradata.


What is the SQL function to retrieve the size of a table in Teradata?

The SQL function to retrieve the size of a table in Teradata is dbc.TablesV or dbc.TVFSTableSPC.


You can use the following query to retrieve the size of a table:

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SELECT 
    tableid,
    databasename,
    tablename,
    sum(currentperm) AS currentperm,
    sum(maxperm) AS maxperm
FROM dbc.TVFstablespace
WHERE databasename = 'your_database_name'
AND tablename = 'your_table_name'
GROUP BY 1,2,3


This query will return the current and maximum perm space used by the specified table in Teradata.


How to estimate the total size of a table in Teradata database?

To estimate the total size of a table in a Teradata database, you can use the following SQL query:

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SELECT SUM(currentperm) / 1024 / 1024 AS total_size_mb
FROM dbc.tablesize
WHERE databasename = 'your_database_name'
AND tablename = 'your_table_name';


This query retrieves the total size of the table in megabytes by summing up the currentperm (current permanent space used by the table) from the dbc.tablesize view. Make sure to replace 'your_database_name' and 'your_table_name' with the actual database name and table name.


Alternatively, you can also use Teradata Administrator or Teradata Viewpoint to view the size of a table graphically.


How to determine the total size of a table in Teradata using SQL?

To determine the total size of a table in Teradata using SQL, you can use the following query:

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SELECT SUM(currentperm)
FROM dbc.tablesize
WHERE databasename = 'your_database_name'
AND tablename = 'your_table_name';


Replace 'your_database_name' and 'your_table_name' with the actual database name and table name you want to get the total size for. This query will return the total size of the specified table in bytes.


How to find the total size of a specific table in Teradata?

To find the total size of a specific table in Teradata, you can use the following SQL query:

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SELECT SUM(CurrentPerm) as Total_Table_Size
FROM dbc.tablesize
WHERE databasename = 'your_database_name' 
AND tablename = 'your_table_name';


Replace 'your_database_name' and 'your_table_name' with the actual database name and table name that you want to find the total size of. This query will return the total size of the specified table in bytes.


What is the byte count of a table in Teradata database?

The byte count of a table in a Teradata database can be calculated by summing up the size of each column in the table.Each column may have a different data type and size, so the byte count will vary depending on the specific columns in the table. Additionally, there may also be additional storage overhead for indexing, rows, and other metadata which will also contribute to the overall byte count of the table.


What is the recommended approach to find the size of a table in Teradata?

The recommended approach to find the size of a table in Teradata is to use the Teradata Administrator or Teradata SQL Assistant software. Here are the steps to find the size of a table in Teradata:

  1. Open the Teradata Administrator or SQL Assistant software.
  2. Connect to the Teradata database using your login credentials.
  3. In the Teradata Administrator, navigate to the "Viewpoint" tab and then click on the "Space Usage" option.
  4. In SQL Assistant, run the following SQL query: SELECT SUM(CurrentPerm) AS TotalPerm FROM DBC.TABLESIZE WHERE DatabaseName='' AND TableName=''; Replace and with the actual database name and table name for which you want to find the size.
  5. The result will show the total size of the table in bytes.


Alternatively, you can also use the SHOW TABLE command in the SQL Assistant software to get the information about the size of a table.

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