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dev:sql:statements:select:from [2010/07/03 22:19] tdo created |
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| <html><div align="center"><span style="color:red">DRAFT</span></div></html> | <html><div align="center"><span style="color:red">DRAFT</span></div></html> | ||
| + | ====== Omnidex SQL: SELECT FROM Clause ====== | ||
| + | {{page>:sql_bar&nofooter&noeditbtn}} | ||
| + | ^See Also:^[[dev:sql:statements:select:home | SELECT statement ]]^[[dev:sql:statements:select:where | WHERE clause]]^[[dev:sql:statements:select:group_by| GROUP BY clause]]^ [[dev:sql:statements:select:order_by |ORDER clause ]]^ | ||
| - | ====== Omnidex SQL: SELECT FROM Clause ====== | ||
| ===== Description ===== | ===== Description ===== | ||
| - | |||
| ===== Syntax ===== | ===== Syntax ===== | ||
| + | <code> | ||
| + | FROM table_spec [ table_alias ] [, [table_spec2 [ table_alias ] [ $omnidex ] ] | ||
| + | [[ < LEFT | RIGHT >][ OUTER | CROSS ] ] | ||
| + | [ JOIN table_spec2 ] | ||
| + | [ ON table_spec1.linkfield = table_spec2.linkfield ] | ||
| + | [ <AND | OR> NOT] table_spec.linkfield = table_spec.linkfield ] | ||
| + | </code> | ||
| - | Statement | ||
| - | |||
| ===== Discussion ===== | ===== Discussion ===== | ||
| - | + | ||
| - | == arg1 == | + | The From Datasource can be one of the following: |
| - | + | | table_spec | A table using a syntax of [database.]table. | | |
| - | == arg2 == | + | | $OMNIDEX | An internal table automatically created and used for testing consisting of one row and one column. | |
| + | | (subquery) | A nested subquery. | | ||
| + | | JOIN Clause | Joins one or more tables.| | ||
| ===== Examples ===== | ===== Examples ===== | ||