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A Guide to SQL - Microsoft Access $7.13   Add to cart
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A Guide to SQL - Microsoft Access

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  • Course
  • Computer Literacy
  • Institution
  • 11
  • Book
  • Exploring IT

A comprehensive summary of SQL content at a Grade 11 Level. It contains all the necessary information in a colourful, table format. Diagrams of complex topics have been included. All information has been typed for improved legibility.

Last document update: 3 year ago

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Document information

  • October 24, 2021
  • October 25, 2021
  • 12
  • 2022/2023
  • Interview
  • Unknown
  • Unknown

Subjects

  • programming
  • sql
  • ms access
  • simplified
  • tabulated
  • typed
  • funworks
  • 2021
  • 2022
  • 2020
  • ieb
  • grade 11
  • grade 10
  • information tecnology
  • database m
  • it
  • exploring it java programming grade 11 3rd ed isbn 9781928495062

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2




1. Extracting Data from the Whole Table



SELECT *
FROM <tableName>


SELECT Extracts data from the table

* All fields for that record - wildcard

FROM From the specified table




SELECT *
FROM <tableName>
ORDER BY <field1> ( ASC / DESC ), … <fieldn> ( ASC / DESC )


ORDER BY Orders selected fields only, in order of the fields entered (field1 before field2)

ASC Ascending

DESC Descending




SELECT TOP <n> * // MS ACCESS will return all rows with that value
FROM <tableName>
ORDER BY <field1> ( ASC / DESC ), … <fieldn> ( ASC / DESC )


TOP <n> ● Limit the number of rows displayed in a table
● TOP 1 can be used to find the largest / smallest, as it limits the result to one record




2

, 3




2. Limiting The Fields



SELECT <field1>, … <fieldn>
FROM <tableName>

<field1>, … <fieldn> Which fields are displayed and in what order




SELECT DISTINCT <field1>, … <fieldn>
FROM <tableName>

DISTINCT Fetch unique rows based on the fields selected, ignoring duplicates




3. Calculations



SELECT <field1>, … <fieldn>, <calculations>
FROM <tableName>

<calculations> The result set will display the listed fields as columns and a new column for
each calculation

The new column is given a random name e.g. ‘Expr1005’




SELECT <field1>, … <fieldn>, <calculations> AS [name]
FROM <tableName>

AS [name] Specifies the name for the column

Use square brackets for 3 words or more, or if the name includes keywords e.g. BY
Can also use CamelCase




3

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