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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
SQL statementsThis chapter describes the syntax and semantics of SQL statements that are recognized by HCL OneDB™.
SELECT statementUse the SELECT statement to retrieve values from a database or from an SPL or collection variable. A SELECT operation is called a query.
Projection ClauseThe Projection clause (sometimes called the Select clause) specifies a list of database objects or expressions to retrieve, and can set restrictions on qualifying rows. (The select list is sometimes also called the projection list.)
Expressions in the Select List
Selecting Columns

Selecting Columns

Column expressions are the most commonly used expressions in a SELECT statement. For a complete description of the syntax and use of column expressions, see Column Expressions. The following examples use column expressions in the Projection clause:

SELECT orders.order_num, items.price FROM orders, items;
SELECT customer.customer_num ccnum, company FROM customer;
SELECT catalog_num, stock_num, cat_advert [1,15] FROM catalog;
SELECT lead_time - 2 UNITS DAY FROM manufact;