Difference between revisions of "SQL Syntax"

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Revision as of 19:28, 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

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  • [ ... ] - 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
{ * | column_expr [, column_expr]* }
FROM table_reference
[WHERE where_clause]
[GROUP BY group_clause]
[ORDER BY order_clause]
[LIMIT limit_clause]

column_expr

There are several ways to specify columns:

{ column_name
| [DISTINCT] column_name
| [DISTINCT](column_name)
...
}

where:

DISTINCT
Eliminates duplicate rows from the result set.