WRITE ... TO 把源的格式 附值到目标。
MOVE ... TO 直接把源的值附到目标。
例子：
DATA: gv_char1(20) TYPE c,
gv_char2(20) TYPE c,
dec1(10) TYPE p DECIMALS 2 VALUE '22345.89'.
* date *
WRITE:/ 'date variable'.
WRITE sy-datum TO gv_char1.
WRITE:/ 'write to', gv_char1.
MOVE sy-datum TO gv_char2.
WRITE:/ 'move to', gv_char2.
SKIP 1.
* decimal *
WRITE:/ 'decimal variable'.
WRITE dec1 TO gv_char1.
WRITE:/ 'write to', gv_char1.
MOVE dec1 TO gv_char2.
WRITE:/'move to', gv_char2.
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