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Question 277/290
Examine the description of the EMP_DETAILS table given below:
Exhibit:
Which two statements are true regarding SQL statements that can be executed on the EMP_DETAIL table? (Choose two.)
Exhibit:
Which two statements are true regarding SQL statements that can be executed on the EMP_DETAIL table? (Choose two.)
Correct Answer: B,C
Explanation/Reference:
Explanation:
LONG Character data in the database character set, up to 2GB. All the functionality of LONG (and more) is provided by CLOB; LONGs should not be used in a modern database, and if your database has any columns of this type they should be converted to CLOB. There can only be one LONG column in a table.
Guidelines
A LONG column is not copied when a table is created using a subquery.
A LONG column cannot be included in a GROUP BY or an ORDER BY clause.
Only one LONG column can be used per table.
No constraints can be defined on a LONG column.
You might want to use a CLOB column rather than a LONG column.
Explanation:
LONG Character data in the database character set, up to 2GB. All the functionality of LONG (and more) is provided by CLOB; LONGs should not be used in a modern database, and if your database has any columns of this type they should be converted to CLOB. There can only be one LONG column in a table.
Guidelines
A LONG column is not copied when a table is created using a subquery.
A LONG column cannot be included in a GROUP BY or an ORDER BY clause.
Only one LONG column can be used per table.
No constraints can be defined on a LONG column.
You might want to use a CLOB column rather than a LONG column.
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