If a query involves NOT, AND, OR with no parenthesis

Introduction to SQL
If a query involves NOT, AND, OR with no parenthesis

AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last.

NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last.

NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last.

The order of occurrence determines the order of evaluation.

AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last.

NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last.

NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last.

The order of occurrence determines the order of evaluation.

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Introduction to SQL
The SQL statementSELECT SUBSTR('abcdefghij', INSTR('123321234', '2', 3, 2), 2) FROM DUAL;prints

bc

gh

23

ab

bc

gh

23

ab

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Introduction to SQL
ON UPDATE CASCADE ensures which of the following?

Materialized Views

Normalization

All of these

Data Integrity

Materialized Views

Normalization

All of these

Data Integrity

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Introduction to SQL
Which of the following query finds the names of the sailors who have reserved at least one boat?

SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;

SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;

SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid;

None of These

SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;

SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;

SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid;

None of These

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Introduction to SQL
The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

TRUE

Nothing

Hi

FLASE

TRUE

Nothing

Hi

FLASE

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Introduction to SQL
The SQL statement: SELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE; adds two numbers from each row together and lists the results in a column named Total.

True

False

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Introduction to SQL

Introduction to SQL If a query involves NOT, AND, OR with no parenthesis

Introduction to SQL The SQL statementSELECT SUBSTR('abcdefghij', INSTR('123321234', '2', 3, 2), 2) FROM DUAL;prints

Introduction to SQL ON UPDATE CASCADE ensures which of the following?

Introduction to SQL Which of the following query finds the names of the sailors who have reserved at least one boat?

Introduction to SQL The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

Introduction to SQL The SQL statement: SELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE; adds two numbers from each row together and lists the results in a column named Total.

Introduction to SQL
If a query involves NOT, AND, OR with no parenthesis

Introduction to SQL
The SQL statementSELECT SUBSTR('abcdefghij', INSTR('123321234', '2', 3, 2), 2) FROM DUAL;prints

Introduction to SQL
ON UPDATE CASCADE ensures which of the following?

Introduction to SQL
Which of the following query finds the names of the sailors who have reserved at least one boat?

Introduction to SQL
The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

Introduction to SQL
The SQL statement: SELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE; adds two numbers from each row together and lists the results in a column named Total.