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Introduction to SQL

Introduction to SQL
SQL data definition commands make up a(n) ________ .

DDL
DML
XML
HTML

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Introduction to SQL
A subquery in an SQL SELECT statement:

cannot have its results sorted using ORDER BY.
can always be duplicated by a join.
has a distinct form that cannot be duplicated by a join.
can only be used with two tables.

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Introduction to SQL
The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.

True
False

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Introduction to SQL
The result of a SQL SELECT statement is a ________ .

table
form
file
report

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Introduction to SQL
The SQL statementSELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL;

456789
2345
6789
1234

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Introduction to SQL
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.

True
False

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