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17 sie 2017 · This is a user-defined function that returns a table (which is working fine): CREATE OR REPLACE FUNCTION "CORPDATA"."DEPTEMPLOYEES" (DEPTNO CHAR(3)) RETURNS TABLE (EMPNO CHAR(6), LASTNAME VARCHAR(15), FIRSTNAME VARCHAR(12)) LANGUAGE SQL. READS SQL DATA.
Table functions can be used to apply SQL language processing power to data that is not stored in the database or to allow access to such data as if it were stored in a table. For example, a table function can read a file or get data from the web and return a result table.
An SQL table function is a function that is written exclusively in SQL statements and returns a single result table. An SQL table function can define a parameter as a distinct type, define a parameter for a transition table (for example, the TABLE LIKE ... AS LOCATOR syntax), and include a single SQL PL RETURN statement that returns a result table.
How to create a function in DB2 that obtains a value from a sequence and returns it? It should be possible to use that function in select or insert statement, e.g: select my_func() from xxx insert into xxx values(my_func())
Table functions return columns of a table and resemble a table created using a CREATE TABLE statement. Table functions can be qualified with a schema name.
Table: Either a permanent or temporary Db2 table. View: A standard Db2 view. Alias: A Db2 alias that points to a table, view, or another alias. Full Select: An embedded SELECT statement that returns a set of rows. Table function: A kind of function that returns a table.
The SELECT statement queries data from one or more tables in a database. It is one of the most complex SQL statements in Db2. In this tutorial, we will focus on using the SELECT statement to query data from a single table. Here is the simplest form of the SELECT statement: SELECT . select_list. FROM . table_name;
