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ABAP Syntax Starting with O


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Syntax Starting with O

ON CHANGE

Introduces a new branch.

Syntax

ON CHANGE OF <f> [OR <f1> OR <f2>].

Opens an ON control structure, which ends with ENDON. The statement block is executed whenever the contents of the field <f> or one of the other fields <fi> has changed since the statement was last executed.




OPEN CURSOR

Opens a database cursor.

Syntax

OPEN CURSOR [WITH HOLD] <c> FOR SELECT      <result>
FROM      <source>
[WHERE    <condition>]
[GROUP BY <fields>]
[HAVING   <cond>]
[ORDER BY <fields>].

Opens a cursor <c> with type CURSOR for a SELECT statement. You can use all the clauses of the SELECT statement apart from the INTO clause. The INTO clause is set in the FETCH statement. If you use the WITH HOLD addition, the cursor is not closed when a database commit occurs.

OPEN DATASET

Opens a file.

Syntax

OPEN DATASET <dsn>
[FOR INPUT|OUTPUT|APPENDING|UPDATE]
[IN BINARY MODE
|IN TEXT MODE [ENCODING (DEFAULT|UTF-8|NON-UNICODE)]
|IN LEGACY BINARY MODE [(BIG|LITTLE) ENDIAN] [CODE PAGE <cp>]
|IN LEGACY TEXT MODE [(BIG|LITTLE) ENDIAN] [CODE PAGE <cp>]]
[REPLACEMENT CHARACTER <rc>]
[IGNORING CONVERSION ERRORS]
[AT POSITION <pos>]
[TYPE <c>]
[MESSAGE <mess>]
[FILTER <filt>].

Opens a file <dsn> on the application server. The additions after FOR specify how the file is read or written. The MODE additions specifies how content is interpreted (as characters or in binary form). The ENCODING addition specifies the character representation in the file. The LEGACY MODE allows you to read files that were written before Release 6.10. REPLACEMENT CHARACTERS and CONVERSION ERRORS are used to handle errors during character set conversion. AT POSITION specifies the position in the file. MESSAGE specifies where system messages are stored. FILTER lets you specify operating system commands.

OVERLAY

Overlays one string with another:

Syntax

OVERLAY <c1> WITH <c2> [ONLY <str>].

This statement overlays all positions in field <c1> containing letters which occur in <str> with the contents of <c2>. <c2> remains unchanged. If you omit ONLY <str>, all positions of <c1> containing spaces are overwritten.

A D V E R T I S E M E N T

A D V E R T I S E M E N T

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