Check derived table syntax in the reference manual

Press CTRL+C to copy. ERROR (42S22): Unknown column 'www.doorway.ru' in 'where clause'. In SQL, the query becomes legal if the derived tables are preceded by the LATERAL keyword (which means “this derived table depends on previous tables on its left side”): Press CTRL+C to copy. The JSON_TABLE() function generates a table and provides another way to create a derived table: SELECT * FROM JSON_TABLE(arg_list) [AS] tbl_name The [AS] tbl_name clause is mandatory because every table in a FROM clause must have a name. Any columns in the derived table must have unique names. Alternatively, tbl_name may be followed by a . Press CTRL+C to copy. SELECT AVG (sum_column1) FROM (SELECT SUM (column1) AS sum_column1 FROM t1 GROUP BY column1) AS t1; Notice that the column name used within the subquery (sum_column1) is recognized in the outer query. A derived table can return a scalar, column, row, or table.

SELECT www.doorway.ru, www.doorway.ru FROM employee AS t1 INNER JOIN info AS t2 ON www.doorway.ru = www.doorway.ru; SELECT www.doorway.ru, www.doorway.ru FROM employee t1 INNER JOIN info t2 ON www.doorway.ru = www.doorway.ru; A table_subquery is also known as a derived table or subquery in the FROM clause. See Section , “Derived Tables”. Check derived table syntax in the Reference Manual. 16 Subqueries are not allowed in a COMPUTED COLUMN definition. 16 Local variables and parameters are not allowed in a COMPUTED COLUMN definition. derived from a given input window have the same color stripe on the left side. For example, a state table and output equations derived from a state graph would have the same edge color as the state graph. This manual assumes that you are familiar with basic Windows operations.

If more than one table reference is listed in the FROM clause, the tables are row of the derived virtual table is checked against the search condition. The query expression for a SQL derived table is specified in the from clause of the select or select into command in place of a table or view name: from_clause. Needing to reference a derived table multiple times in a single query; An alternative to creating a view in the database; Performing the same calculation.