Discussion
Home ‣ Certification ‣ Oracle Certification See What Others Are Saying!
- Question
A subquery in an sql select statement.
- Correct Answer
- A Subquery or Inner query or a Nested query is a query within another SQL query and embedded within the WHERE clause Subqueries are most frequently used with the SELECT statement The basic syntax is as follows:: SELECT column_name [, column_name ] FROM table1 [, table2 ] WHERE column_name OPERATOR (SELECT column_name [, column_name ] FROM table1 [, table2 ] [WHERE]) A subquery is used to return data that will be used in the main query as a condition to further restrict the data to be retrieved Subqueries can be used with the SELECT, INSERT, UPDATE, and DELETE statements along with the operators like =, <, >, >=, <=, IN, BETWEEN, etc There are a few rules that subqueries must follow ? 1 Subqueries must be enclosed within parentheses 2 A subquery can have only one column in the SELECT clause, unless multiple columns are in the main query for the subquery to compare its selected columns 3 An ORDER BY command cannot be used in a subquery, although the main query can use an ORDER BY The GROUP BY command can be used to perform the same function as the ORDER BY in a subquery 4 Subqueries that return more than one row can only be used with multiple value operators such as the IN operator 5 The SELECT list cannot include any references to values that evaluate to a BLOB, ARRAY, CLOB, or NCLOB 6 A subquery cannot be immediately enclosed in a set function 7 The BETWEEN operator cannot be used with a subquery However, the BETWEEN operator can be used within the subquery
- 1. Which proprietary Cisco STP extensions would put a switch port into err-disabled if a BPDU is received on this port? Discuss
- 2. Which Cisco 802.1d extension stops BPDU from being transmitted out a port? Discuss
- 3. You want to improve network performance by increasing the bandwidth available to hosts and limit the size of the broadcast domains. Which of the following options will achieve this goal?
Options- A. Managed hubs
- B. Bridges
- C. Switches
- D. Switches configured with VLANs Discuss
- 4. What command would you use to set an access list on a VTY line? Discuss
- 5. What is the meaning of amber SYST led on a 2960 switch?
Options- A. This is normal operation
- B. There is a bridging loop
- C. The switch IOS is loading
- D. The switch failed its POST Discuss
- 6. What is the formula for ranking keyword-targeted ads on the Search Network? Discuss
- 7. What are the minimum requirements to run an ad on the Search Network? Discuss
- 8. Why should you use the Ad Preview and Diagnosis tool to check if your ads are live and running on Google? Discuss
- 9. Why is it important to monitor ad campaign performance? Discuss
- 10. What is one way you can increase CTRs? Discuss
More questions
Correct Answer: BPDUGuard
Correct Answer: PortFast
Correct Answer: Switches configured with VLANs
Explanation:
By creating and implementing VLANs in your switched network, you can break up broadcast domains at layer2. For hosts on different VLANs to communicate, you must have a router or layer 3 switch.
Correct Answer: line vty 0 4 access - class 110 in
Correct Answer: The switch failed its POST
Explanation:
Explanation: When the switch failed its POST, Power-On Self Test, the SYST led will turn amber and the IOS did not load
Correct Answer: (Maximum Cost Per Click) x (Quality Score)
Correct Answer: Text ad, keyword list, and a default bid
Correct Answer: By searching for keywords that trigger your ad, you can rack up impressions without clicks, which may lower your Click-Through Rate, which may prevent your ad from appearing as often as it is eligible
Correct Answer: In order to determine if campaigns meet business marketing and conversion goals
Correct Answer: Add negative keywords to the ad group to reduce irrelevant impressions
Comments
There are no comments.Programming
Copyright ©CuriousTab. All rights reserved.