Example 1: If User Default Server Character Set is LATIN
Consider the Name column in the following table definition:
CREATE TABLE Employee (EmployeeID INTEGER ,Name CHARACTER(30) CHARACTER SET LATIN ,Salary DECIMAL(8,2));
If the user default server character set is LATIN, then the character string that TYPE returns for the Name column does not contain the CHARACTER SET phrase.
SELECT TYPE(Employee.Name);
Type(Name) ---------- CHAR(30)
Example 2: If User Default Server Character Set is LATIN but Server Character Set for Name Column is UNICODE
If the user default server character set is LATIN, but the server character set for the Name column is UNICODE, then the result string contains the CHARACTER SET phrase.
CREATE TABLE Employee (EmployeeID INTEGER ,Name VARCHAR(30) CHARACTER SET UNICODE ,Salary DECIMAL(8,2)); SELECT TYPE(Employee.Name);
Type(Name) --------------------------------- VARCHAR(30) CHARACTER SET UNICODE
Example 3: Returning the Types of the Name and Salary Columns
The following statement returns the types of the Name and Salary columns:
SELECT TYPE(Employee.Name), TYPE(Employee.Salary);
Type(Name) Type(Salary) ----------- ------------ VARCHAR(30) DECIMAL(8,2)
Example 4: Using the TYPE Function
Consider the following TYPE function.
SELECT TYPE(SUBSTR(Employee.Name,3,2));
The result type of SUBSTR depends on the session mode.
If the session is set to ANSI mode, the returned result is as follows:
Type(Substr(Name,3,2)) ---------------------- VARCHAR(30)
If the session is set to Teradata mode, the returned result is as follows:
Type(Substr(Name,3,2)) ---------------------- VARCHAR(2)
Example 5: Applying the TYPE Function to the BLOB Column
Consider the following table definition:
CREATE TABLE images (imageid INTEGER ,imagedesc VA RCHAR(50) ,image BLOB(2K)) UNIQUE PRIMARY INDEX (imageid);
The following statement applies the TYPE function to the BLOB column:
SELECT TYPE(images.image) FROM images;
The result is:
Type(image) ----------- BLOB(2048)
The result is a normal integer length, and does not use the K option that was used to define the BLOB column the CREATE TABLE statement.
Example 6: Using TYPE to Request the Data Type of Two Columns
If TYPE is used to request the data type of two columns, defined as GRAPHIC and LONG VARCHAR CHARACTER SET GRAPHIC, respectively, the result is as follows.
TYPE(GColName) TYPE(LVGColName) ----------------------------- ------------------------------------ CHAR(4) CHARACTER SET GRAPHIC VARCHAR(32000) CHARACTER SET GRAPHIC
In the case of a LONG VARCHAR CHARACTER SET GRAPHIC column, the length returned is the maximum length of 32000.