What is CLOB datatype in Teradata?
A character large object (CLOB) column can store character data, such as simple text or HTML. Note: A CLOB column can store XML or JSON documents; however, Teradata recommends that you use the Teradata XML and Teradata JSON data types for that purpose. the number of characters to allocate for the CLOB column.
What are the data types in Teradata?
Supported Teradata Data Types
- Binary string data: BYTE(n) VARBYTE(n)
- Character string data: CHAR (n) VARCHAR (n) LONG VARCHAR.
- Date and time data: DATE. TIME(n) TIMESTAMP (n)
- Numeric data: BYTEINT. INTEGER. DECIMAL(n,m)
What is LOB information in Teradata?
LOB stands for Large Objects datatypes. In Teradata there are two column’s LOB datatypes: BLOB and CLOB.
Which data type is used for storage format in Teradata?
Teradata Database provides the Avro and CSV storage formats for the DATASET data type, which are based on the Apache Avro and CSV specifications.
What is float data type in Teradata?
FLOAT is a Teradata synonym for REAL and DOUBLE PRECISION. Eight bytes are used to hold a floating point value. Floating point values are stored and manipulated internally in IEEE floating point format.
What is diff between VARCHAR and NVARCHAR?
The key difference between varchar and nvarchar is the way they are stored, varchar is stored as regular 8-bit data(1 byte per character) and nvarchar stores data at 2 bytes per character. Due to this reason, nvarchar can hold upto 4000 characters and it takes double the space as SQL varchar.
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 |
What is Nchar and Nvarchar?
The NCHAR data type is a fixed-length character data type that supports localized collation. The NVARCHAR data type is a varying-length character data type that can store up to 255 bytes of text data and supports localized collation.
What is difference between Nchar and char?
char : fixed-length character data with a maximum length of 8000 characters. nchar : fixed-length unicode data with a maximum length of 4000 characters.
How do you add CLOB data to a table?
Steps to insert lob values :
- Create a table and name it TBL_CLOB with 2 fields:
- Create a stored procedure and name it P_CLOB with the following code:
- Test inserting up to 32000.
- Retrieve the 2 records you just inserted and count the number of characters in the CLOB fields: