much copied reference material: Paul Vinkenoog Copyright © 2017-2023 Firebird Project and all contributing authors, under the Public Documentation License Version 1.0. Please refer to the License Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1.5. Contributing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Russia) Technical support and developer of administrator tools for the Firebird DBMS. 1.5. Contributing There are several ways you can contribute to the documentation of Firebird, or Firebird in general:

much copied reference material: Paul Vinkenoog Copyright © 2017-2023 Firebird Project and all contributing authors, under the Public Documentation License Version 1.0. Please refer to the License Notice (DML) Statements 221 NULLS FIRST is the default. Ordering UNION-ed Sets The discrete queries contributing to a UNION cannot take an ORDER BY clause. The only option is to order the entire output, using or aliases, from the first contributing query only. The ASC/DESC and/or NULLS directives are available for this global set. If discrete ordering within the contributing set is required, use of derived