How do I find the number of columns in a Teradata table?

How do I find the number of columns in a Teradata table?

1. You probably want: select tablename, count(*) from dbc.columnsV where databasename = ‘mydatabase’ group by 1; – dnoeth.
2. Thank you..It works…Any idea why select count(*) from dbc.columnsv where tablename = ‘ABC’ doesnt work. it shows me 0 count.
3. This might happen when the table name is longer than 30 characters.

How do I get column names in Teradata SQL?

To get all the column names used in database in Teradata

1. select columnname from dbc. columns.
2. where tablename =’tbl’
3. and databasename = ‘database’

How can I select all column names in MySQL table?

Get column names from a table using INFORMATION SCHEMA

1. SELECT COLUMN_NAME.
2. FROM INFORMATION_SCHEMA. COLUMNS.
3. WHERE.
4. AND TABLE_NAME = ‘sale_details’ ;

How can I get column names from all tables in MySQL?

How to list all tables that contain a specific column name in MySQL? You want to look for tables using the name of columns in them. SELECT DISTINCT TABLE_NAME FROM INFORMATION_SCHEMA. COLUMNS WHERE COLUMN_NAME IN(‘column1’, ‘column2’) AND TABLE_SCHEMA = ‘schema_name’;

How do I see query results in Teradata?

1 From the Teradata Query Scheduler Viewer, select a job in a Complete status from the Jobs list. 2 Click Options > Retrieve Result Data, or click , or right-click the request to display a shortcut menu and click Retrieve Result Data. 3 A prompt appears for the name of a local file where to copy the results.

How do I find the number of rows in a Teradata table?

1. COUNT(*) : This will return total number of rows present in the table.
2. COUNT(1) : This will return total number of rows present in the table.
3. COUNT(2) : This will return total number of rows present in the table.
4. COUNT(4) : This will return total number of rows present in the table.

How do I select the number of unique values in Teradata?

[TYPE] as DISTINCT => that a value_expression that evaluates to NULL or to a duplicate value does not contribute to the total count. This is used to get distinct count in Teradata. [TYPE] as * => to count all rows in the group of rows on which COUNT operates. COUNT is valid for any data type.

How do I get column details in Teradata?

You can use “SHOW VIEW VIEW_NAME” or “HELP COLUMN VIEW_NAME. *” to get all column names and datatype in the view.