Difference between revisions of "SQL Syntax"
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:* [ | :* [ x ] - Optional (one or none) | ||
:* [ ... ] | :* [, x ... ] - Zero or more additional | ||
:* { | :* { x | y } - Choose one | ||
==SELECT STATEMENT== | ==SELECT STATEMENT== | ||
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:SELECT | :SELECT | ||
::[ DISTINCT ] | ::[ DISTINCT ] | ||
::{ * | [[#column_expr|column_expr]] [, [[#column_expr|column_expr]]] | ::{ * | [[#column_expr|column_expr]] [, [[#column_expr|column_expr]]] ... } | ||
::FROM [[#table_reference|table_reference]] | ::FROM [[#table_reference|table_reference]] | ||
:::[WHERE where_clause] | :::[WHERE where_clause] |
Revision as of 20:10, 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
-
- [ x ] - Optional (one or none)
- [, x ... ] - Zero or more additional
- { x | y } - 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_by_clause]
- [ORDER BY order_by_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
- { column_name | SQL Function } [ [AS] alias]
where:
- alias
- Displayed as the column name in the result set, in the SQL Browser.
Can be used as a field name in a group_by_clause or order_by_clause. - For example:
- SELECT CONCAT(last_name,', ',first_name) AS full_name
- FROM Customer_Contacts ORDER BY full_name;
- SELECT CONCAT(last_name,', ',first_name) AS full_name