2012年5月19日 · The preferred approach to limiting the maximum number of connections is setting the Maximum Users (-n) parameter for the database to an appropriate value. The following provides two ABL code examples which rely on using the Virtual System Tables (VST).

4GL Queries are data manipulation operations that are used to retrieve or change data stored in the database. In PROGRESS version 6 and earlier, 4GL queries came in two main flavors: FIND queries and block oriented queries (FOR EACH and PRESELECT).

2016年6月14日 · The 5408 warning message refers to the -l (local buffer size) startup parameter that administers how much memory Progress will use for the client's local buffer pool. It is merely indicating that this limit has been exceeded and Progress is automatically increasing the -l setting as needed in the current client session.

2017年4月27日 · How can I limit each row to 1 of a unique IDNum? You probably want to look into a way to do this with SQL 92 code, which is what Progress understands. If you're extracting that code from an ODBC, it's probably the best way out of this. Now if you want to do this with 4GL code, it's probably easier and cleaner for you, if it's an option.

A fourth-generation programming language (4GL) is a high-level computer programming language that belongs to a class of languages envisioned as an advancement upon third-generation programming languages (3GL).

2021年2月16日 · I'm working with Progress-4GL, appBuilder and procedure editor, release 11.6. I've just found a CHARACTER type global variable (DEF VAR global_variable AS CHAR NO-UNDO.), containing up to 12901 characters. The variable is only used for passing information within the application, the information will never be stored as one tuple within a table.

2020年1月17日 · Limit; BLOB: 1GB: CHARACTER: Constrained bny record size. Note: If a field has more than 32K bytes, you must write your own dump/reload procedure because the OpenEdge dump/reload procedure cannot handle fields larger than 32K bytes. CLOB: 1GB: DATE: 1/1/32768 B.C. to 12/31/32767 A.D. DATETIME: Same limit as DATE. TIME limit is 00:00:00 to 23:59 ...

2013年5月3日 · For implementations that support LIMIT and OFFSET keywords, the query used to return results for each page would be as follows: page one would use SELECT ... LIMIT 10 OFFSET 0 , page 2 would use SELECT ...

The MPE/iX operating system uses files of a predetermined maximum size. The HP ALLBASE/4GL installation procedure establishes an arbitrary limit of 2 000 000 records for each S-file. Under normal circumstances, this limit is far in excess of the required file size.

How to use the right clause to limit the number of rows produced by a SELECT statement? IBM® Informix® SQL supports the SKIP and FIRST/LIMIT keywords to limit the number of rows of a result set.