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Introduction to SQL

Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

True
False

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

6789
2345
456789
1234

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Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

question mark (?); asterisk (*)
percent sign (%); underscore (_)
asterisk (*); percent sign (%)
underscore(_); question mark (?)

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

True
False

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Introduction to SQL
________ was adopted as a national standard by ANSI in 1992.

DBase
SQL
Oracle
Microsoft Access

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Introduction to SQL
Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints.

True
False

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