Difference between revisions of "SQL Syntax"

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:* Field and table names are case sensitive
:* Field and table names are case sensitive


''Learn more:'' [[SQL Functions]]
''Learn more:'': [[SQL Functions]]
 
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:: For example: <tt>DISTINCT(customer_name,address)</tt>
:: For example: <tt>DISTINCT(customer_name,address)</tt>


''Learn more:'': [http://dev.mysql.com/doc/refman/5.5/en/select.html MySQL Select Statement syntax]
===column_expr===
===column_expr===
There are several ways to specify columns:
There are several ways to specify columns:

Revision as of 19:59, 11 November 2011

Here is the syntax for the SQL SELECT statements that the SQL parser recognizes.

Considerations
  • SQL syntax is case insensitive.
  • Field and table names are case sensitive

Learn more:: SQL Functions

Legend
  • [ ... ] - Optional (one or none)
  • [ ... ]* - Zero or more
  • { ... | ... } - Choose one

SELECT STATEMENT

In a select statement, you designate one more columns, separated by commas (or "*" for all columns), a table to get the data from, and additional options:

SELECT
[ DISTINCT ]
{ * | column_expr [, column_expr]* }
FROM table_reference
[WHERE where_clause]
[GROUP BY group_clause]
[ORDER BY order_clause]
[LIMIT limit_clause]

where:

DISTINCT
Eliminates duplicate rows from the result set.
Note:
For example: DISTINCT(customer_name,address)

Learn more:: MySQL Select Statement syntax

column_expr

There are several ways to specify columns:

{ column_name | column_name AS alias | column_name alias }

where:

alias
Displayed as the column name in the set of results, in the SQL Browser. Can also be used as a field name in a group_expr or order_expr.

group_expr

order_expr