Which of the following is valid SQL for an Index?

Introduction to SQL
Which of the following is valid SQL for an Index?

REMOVE INDEX ID;

CREATE INDEX ID;

CHANGE INDEX ID;

ADD INDEX ID;

REMOVE INDEX ID;

CREATE INDEX ID;

CHANGE INDEX ID;

ADD INDEX ID;

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Introduction to SQL
Find the names of the countries whose condition is sunny.

SELECT country FROM location WHERE city NOT IN (SELECT city FROM weather WHERE condition = 'sunny');

SELECT country FROM location WHERE condition = 'sunny';

SELECT country FROM location WHERE city IN (SELECT city FROM weather WHERE condition = sunny');

SELECT country FROM location WHERE city UNION (SELECT city FROM weather WHERE condition = 'sunny');

SELECT country FROM location WHERE city NOT IN (SELECT city FROM weather WHERE condition = 'sunny');

SELECT country FROM location WHERE condition = 'sunny';

SELECT country FROM location WHERE city IN (SELECT city FROM weather WHERE condition = sunny');

SELECT country FROM location WHERE city UNION (SELECT city FROM weather WHERE condition = 'sunny');

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Introduction to SQL
To establish a range of values, < and > can be used.

False

True

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Introduction to SQL
Which of the SQL statements is correct?

SELECT Username AND Password FROM Users

None of these

SELECT Username, Password WHERE Username = 'user1'

SELECT Username, Password FROM Users

SELECT Username AND Password FROM Users

None of these

SELECT Username, Password WHERE Username = 'user1'

SELECT Username, Password FROM Users

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Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

exactly 10 rows

more than 10 rows

less than 10 rows

None of these

exactly 10 rows

more than 10 rows

less than 10 rows

None of these

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Introduction to SQL
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.

False

True

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Introduction to SQL

Introduction to SQL Which of the following is valid SQL for an Index?

Introduction to SQL Find the names of the countries whose condition is sunny.

Introduction to SQL To establish a range of values, < and > can be used.

Introduction to SQL Which of the SQL statements is correct?

Introduction to SQL Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

Introduction to SQL The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.

Introduction to SQL
Which of the following is valid SQL for an Index?

Introduction to SQL
Find the names of the countries whose condition is sunny.

Introduction to SQL
To establish a range of values, < and > can be used.

Introduction to SQL
Which of the SQL statements is correct?

Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

Introduction to SQL
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.