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How do I get column data type?

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How do I get column data type?

You can get the MySQL table columns data type with the help of “information_schema. columns”. SELECT DATA_TYPE from INFORMATION_SCHEMA. COLUMNS where table_schema = ‘yourDatabaseName’ and table_name = ‘yourTableName’.

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.

What is column type in Teradata?

Every column in a table has a name and data type. The data type tells Teradata how much physical storage to set aside for the column, as well as the form in which to store the data. Teradata data types fall into categories: binary, character, date, and numeric data.

How do I find column data types in SQL Server database?

The other way to check data types is the statement with using INFORMATION_SCHEMA database. In the below statement you need COLUMNS table: SELECT COLUMN_NAME, DATA_TYPE, IS_NULLABLE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, NUMERIC_SCALE FROM INFORMATION_SCHEMA. COLUMNS WHERE TABLE_NAME=’your_table_name’;

How can I see columns in mysql table?

You can list a table’s columns with the mysqlshow db_name tbl_name command. The DESCRIBE statement provides information similar to SHOW COLUMNS .

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.

Where can I find top 10 records in Teradata?

We can select the very recent sample records from our table using TOP. Syntax: SELECT TOP n* FROM table_name.

What is integer in Teradata?

Teradata – Data Types

Data Types Length (Bytes) Range of values
BYTEINT 1 -128 to +127
SMALLINT 2 -32768 to +32767
INTEGER 4 -2,147,483,648 to +2147,483,647
BIGINT 8 -9,233,372,036,854,775,80 8 to +9,233,372,036,854,775,8 07

How do I view tables in Teradata SQL Assistant?

In my Teradata SQL Assistant Client, I can right-click a table and select Show Definition, this will display the column types and how they are defined.

How do I find column details in SQL?

Using the Information Schema

  1. SELECT TABLE_NAME FROM INFORMATION_SCHEMA. TABLES.
  2. SELECT TABLE_NAME, COLUMN_NAME FROM INFORMATION_SCHEMA. COLUMNS.
  3. SELECT COLUMN_NAME FROM INFORMATION_SCHEMA. COLUMNS WHERE TABLE_NAME = ‘Album’
  4. IF EXISTS( SELECT * FROM INFORMATION_SCHEMA.
  5. IF EXISTS( SELECT * FROM INFORMATION_SCHEMA.

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