Q76 Which two statements are true about substitution variables?
Q76 Which two statements are true about substitution variables?
- (A). A substitution variable prefixed with & always prompts only once for a value in a session.
- (B). A substitution variable prefixed with && to prompts only once for a value in a session unless it is set to undefined in the session
- (C). A substitution variable can be used only in a select statement.
- (D). A substitution variable used to prompt for a column name must be enclosed in single quotation marks.
- (E). A substitution variable can be used with any clause in a select statement.
- (F). A substitution variable used to prompt for a column name must be enclosed in double quotation marks.
Xem thêm:
- Blockchain và Metaverse: Nền tảng của thế giới ảo
- Câu lệnh DELETE – TRUNCATE – DROP TABLE trong SQL
- Q32. Which two are true about RMAN duplexed backup sets?
- Compress and Encrypt RMAN Backups | Nén và mã hoá bản backups với RMAN Oracle Database
- Q125. Which two are true about RMAN backups when using a media manager to write backups to tape when there are only two tape drives?
Bài viết cùng chủ đề:
-
Q166 Which query produces output for CUST_LAST_NAME containing Oder for the first row and Aus for the second?
-
Q165 Which three statements are true about multiple row subqueries?
-
Q164 As the DBA, you execute this command
-
Q163 Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)?
-
Q162 You start your database instance in NOMOUNT state, Which two actions are performed?
-
Q161 Examine this command Which two statements are true?
-
Q160 Examine the description of the BOOKS_TRANSACTIONS table
-
Q159 Which two statements are true about views?
-
Q158. Which two Oracle database space management features require the use of locally managed tablespaces?
-
Q157. Which three are types of segments in a Oracle database?
-
Q156 Which two statements are true about expressions using PROMO_BEGIN_DATE contained in a query?
-
Q155 Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data?
-
Q154 l Which two are benefits of external tables?
-
Q153 Which three statements are true about the DESCRIBE command?
-
Q152 Which two are true about transactions in the Oracle Database?
-
Q151 Examine the description of the PRODUCTS table
