In most cases, RPG can perform READE by using system support that does not require obtaining a temporary record lock to determine whether there is a matching record.

The READ operation reads the record, currently pointed to, from a full procedural file. The name operand is required and must be the name of a file or record format.

If the data-structure operand is specified, the record is read directly into the data structure. If name refers to a program-described file, the data structure can be any data structure of the same length as …

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For a multiple device file, data is read from the subfile record associated with a program device; the program device is identified by the field specified in the DEVID keyword on the file specifications.

Using SETLL with *LOVAL positions the file so that the first read retrieves the record with the lowest key, if the file does not contain any records with null-capable key fields.

%EOF returns '1' if the most recent read operation or write to a subfile ended in an end of file or beginning of file condition; otherwise, it returns '0'.

READE (等しいキーのレコードの読み取り) ... READE 命令は、レコードのキーが検索引数と一致する場合に全手順ファイル (ファイル 仕様の 18 桁目 の F によって識別される) から次の順次 レコード …

Data is read from the program device identified by the field name specified in the DEVID (fieldname) keyword in the file specifications for the device file. If the keyword is not specified, data is read from …

Jul 24, 2020 · Most RPG programmers use explicit loops to read a file, but they allow the RPG compiler to implicitly open and close the file. Let's try that. First, remove the USROPN keyword from the F …