Question 10What does this code do?1234567SELECT account_table.* FROM ( SELECT * FROM transaction.sf_model_feature_2014_01 WHERE day_of_week = 'Monday' ) AS account_table WHERE account_table.availability = 'NO'1 pointIt selects all columns from the table containing transactions on Monday and filters them to display only the transactions that are unavailable.It creates a temporary table named account_table containing all transactions from transaction.sf_model_feature_2014_01. It filters the transaction.sf_model_feature_2014_01 table to include only transactions on Fridays. It selects all data from the transaction.sf_model_feature_2014_01 table.
Question
Question 10What does this code do?1234567SELECT account_table.* FROM ( SELECT * FROM transaction.sf_model_feature_2014_01 WHERE day_of_week = 'Monday' ) AS account_table WHERE account_table.availability = 'NO'1 pointIt selects all columns from the table containing transactions on Monday and filters them to display only the transactions that are unavailable.It creates a temporary table named account_table containing all transactions from transaction.sf_model_feature_2014_01. It filters the transaction.sf_model_feature_2014_01 table to include only transactions on Fridays. It selects all data from the transaction.sf_model_feature_2014_01 table.
Solution
This code does the following:
-
It creates a temporary table named
account_tablethat contains all transactions from thetransaction.sf_model_feature_2014_01table where theday_of_weekis 'Monday'. -
Then, from this temporary table
account_table, it selects all columns where theavailabilityis 'NO'.
So, the final output will be all columns from the transactions that happened on 'Monday' and where the availability is 'NO'.
Similar Questions
Question 6Fill in the blank: The SQL clause SELECT * is used to retrieve all data from a particular _____.
___________ clause is used to retrieve data from one or more tables?Select one:WhereOrder bySelectHaving
ill in the blank: To filter for all items in the Products table that are currently in stock, a data professional uses the _____ clause in SQL.1 pointLIMITEXCEPTWHEREFILTER
Which SQL clause is used to filter records?
In the SQL statement above, what does * indicate?Group of answer choicesIt indicates nothingIt indicates to extract none of the fields from the table to a queryIt indicates to extract * from the table to a queryIt indicates to extract all the fields from the table to a query
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