Intro to SQL

SQLHttp://iwt.bz

Structured

Query

Language

ID Publication Issue Date

1 XML 2011

2 RelationalAlgebra

2011

Table: ebooks

SELECTStatements

SELECT PublicationFROM ebooks

SELECT ID, Publications, Issue DateFROM ebooks

SELECT *FROM ebooks

The asterisk will select all columns.

WHEREStatements

Operator Values= Equal

<> Not Equal

> Greater Than

< Less Than

>= Or Equal

<= Less than or equal

BETWEEN Between an Inclusive Value

LIKE Searches for patterns

IN Knowing the exact value you want to get from a

column.

SELECT PublicationFROM ebooksWHERE Issue Date='2011'

Operator Value

AND&OROperators

The AND operator displays a record if both the frst condition and the second condition is true.

The OR operator displays a record if either the frst condition or the second condition is true.

SELECT publicationsFROM ebooksWHERE publications='XML'AND date='2011'

The ORDER BY keyword is used to sort the result set.

SELECT *FROM ebooksORDER BY dates ASC

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