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Engineering Computer Science Oracle 12c: SQL

Program plan: The main purpose of the code is to create a query that displays the current week, hour, minutes, and seconds of the current date-time. Required Query: select to_char(sysdate, 'WW') as current_week, extract(hour from Systimestamp) as current_hour, extract(minute from Systimestamp) as current_minute, round(extract(second from Systimestamp)) as current_second from dual; Explanation: SELECT keyword will allow the user to retrieve the required values. Systimestamp gives the current time of the system. extract keyword extracts the specified part from the system timestamp. WW specifies the current week. hour keyword specifies the current hour. minute keyword specifies the current minute. second keyword specifies the current second. round keyword removes the decimal part and returns the whole number. FROM keyword specifies the table name. dual is the default table name. For this query, no table needs to be created. Based on the system timestamp and the default table, the above-given query is successfully executed, and the output is given below. Sample Output: CURRENT_WEEK CURRENT_HOUR CURRENT_MINUTE CURRENT_SECOND 49 7 44 19

Program plan: The main purpose of the code is to create a query that displays the current week, hour, minutes, and seconds of the current date-time. Required Query: select to_char(sysdate, 'WW') as current_week, extract(hour from Systimestamp) as current_hour, extract(minute from Systimestamp) as current_minute, round(extract(second from Systimestamp)) as current_second from dual; Explanation: SELECT keyword will allow the user to retrieve the required values. Systimestamp gives the current time of the system. extract keyword extracts the specified part from the system timestamp. WW specifies the current week. hour keyword specifies the current hour. minute keyword specifies the current minute. second keyword specifies the current second. round keyword removes the decimal part and returns the whole number. FROM keyword specifies the table name. dual is the default table name. For this query, no table needs to be created. Based on the system timestamp and the default table, the above-given query is successfully executed, and the output is given below. Sample Output: CURRENT_WEEK CURRENT_HOUR CURRENT_MINUTE CURRENT_SECOND 49 7 44 19

Oracle 12c: SQL

Oracle 12c: SQL

3rd Edition

ISBN: 9781305251038

Author: Joan Casteel

Publisher: Cengage Learning

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A flow chart diagram is a collection of symbols that represents the steps involved in a process. It is a generic tool that can be adapted for various purposes. It is one of the most common process analysis tools. It is used for the graphical analysis of …

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Oracle 12c: SQL

Ch. 10 - Prob. 1RQ Ch. 10 - Prob. 1HOA Ch. 10 - Create a list of all customer numbers along with...Ch. 10 - Prob. 3HOA Ch. 10 - Prob. 4HOA Ch. 10 - Prob. 5HOA Ch. 10 - Prob. 6HOA Ch. 10 - Prob. 7HOA Ch. 10 - Prob. 8HOA Ch. 10 - Prob. 9HOA

Ch. 10 - Produce a list of each customer number and the...

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