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1994.4.10
by Marisa Plumb
added outline for functions, modified clause related docs |
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Where
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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The WHERE clause is used to extract only those records that fulfill a specified criterion. |
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2165.2.5
by Andrew Hutchings
Make fixes to temporal docs |
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Simple SQL WHERE Syntax: |
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.. code-block:: mysql |
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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SELECT column_name(s) |
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FROM table_name |
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WHERE column_name operator value |
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1994.5.1
by Stewart Smith
WHERE clause example is just a simple one |
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**Simple WHERE Clause Example**
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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The "Persons" table: |
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+---------+------------+----------+----------+--------+ |
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|Id |LastName |FirstName |Address | City | |
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+=========+============+==========+==========+========+ |
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| 1 | Larson | Sue |3 Cherry | Chicago|
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+---------+------------+----------+----------+--------+ |
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1994.4.10
by Marisa Plumb
added outline for functions, modified clause related docs |
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| 2 | Roberts | Teri |21 Brown | Chicago|
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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+---------+------------+----------+----------+--------+ |
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1994.4.10
by Marisa Plumb
added outline for functions, modified clause related docs |
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| 3 | Peterson | Kari |30 Mell | Reno |
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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+---------+------------+----------+----------+--------+ |
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2165.2.5
by Andrew Hutchings
Make fixes to temporal docs |
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If you want to select only the persons living in the city "Chicago" from the table above, use the following SELECT statement: |
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.. code-block:: mysql |
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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SELECT * FROM Persons |
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WHERE City='Chicago' |
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The result-set will look like this: |
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+---------+------------+----------+----------+--------+ |
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| Id |LastName |FirstName |Address |City |
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2165.2.5
by Andrew Hutchings
Make fixes to temporal docs |
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+=========+============+==========+==========+========+ |
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1994.4.9
by Marisa Plumb
changes to clause file organization |
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|1 | Larson | Sue |3 Cherry | Chicago| |
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+---------+------------+----------+----------+--------+ |
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|2 | Roberts | Teri |21 Brown | Chicago| |
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1994.5.1
by Stewart Smith
WHERE clause example is just a simple one |
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+---------+------------+----------+----------+--------+ |