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.