SAP abap programming learning process shall start with syntax check of each key word and here is the effort for that.
Basic form
OVERLAY c1 WITH c2.
Addition
... ONLY c3
Effect
The contents of the field c2 overlay the field c1 in all positions where c1 has the value SPACE ; c2 itself remains unchanged. The return code value is set as follows:
SY-SUBRC = 0 At least one character in c1 is overlaid by a character from c2 .
SY_SUBRC = 4 No character in c1 was overlaid by a character from c2 .
Example
DATA: WORK(20) VALUE 'Th t h s ch ng d.',
HELP(20) VALUE 'Grab a pattern'.
OVERLAY WORK WITH HELP.
WORK now contains ' That has changed. ' and the system field SY-SUBRC is set to 0.
Addition
... ONLY c3
Effect
The contents of the field c2 overlay the field c1 only in those positions where c1 has one of the characters existing as a value in c3 ; the fields c2 and c3 remain unchanged.
Example
Linking field selection templates:
DATA: ONE(16), TWO(16).
ONE = '----****++++....'.
TWO = '-*+.-*+.-*+.-*+.'.
OVERLAY ONE WITH TWO ONLY '.'.
OVERLAY TWO WITH ONE ONLY '.+'.
OVERLAY ONE WITH TWO ONLY '+*'.
Field ONE now contains '-----***-*++-*+.' and field TWO contains '-*---***-*++-*+.' .
Performance
The runtime required for the OVERLAY command in the example of the basic form is about 45 msn (standardized microseconds). To execute the addition ... ONLY c3 , about 40 msn are needed.
Basic form
OVERLAY c1 WITH c2.
Addition
... ONLY c3
Effect
The contents of the field c2 overlay the field c1 in all positions where c1 has the value SPACE ; c2 itself remains unchanged. The return code value is set as follows:
SY-SUBRC = 0 At least one character in c1 is overlaid by a character from c2 .
SY_SUBRC = 4 No character in c1 was overlaid by a character from c2 .
Example
DATA: WORK(20) VALUE 'Th t h s ch ng d.',
HELP(20) VALUE 'Grab a pattern'.
OVERLAY WORK WITH HELP.
WORK now contains ' That has changed. ' and the system field SY-SUBRC is set to 0.
Addition
... ONLY c3
Effect
The contents of the field c2 overlay the field c1 only in those positions where c1 has one of the characters existing as a value in c3 ; the fields c2 and c3 remain unchanged.
Example
Linking field selection templates:
DATA: ONE(16), TWO(16).
ONE = '----****++++....'.
TWO = '-*+.-*+.-*+.-*+.'.
OVERLAY ONE WITH TWO ONLY '.'.
OVERLAY TWO WITH ONE ONLY '.+'.
OVERLAY ONE WITH TWO ONLY '+*'.
Field ONE now contains '-----***-*++-*+.' and field TWO contains '-*---***-*++-*+.' .
Performance
The runtime required for the OVERLAY command in the example of the basic form is about 45 msn (standardized microseconds). To execute the addition ... ONLY c3 , about 40 msn are needed.
ABAP TOPIC WISE COMPLETE COURSE
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ABAP Dictionary SAP Scripts Script Controls Smart Forms
Work Flow Work Flow MM Work Flow SD Communication Interface
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