1.Insert System Table
dbtab: SYSTEM DDIC table.
wa: Working Area
itab: Internal Table.
INSERT INTO dbtab VALUES wa.
INSERT dbtab FROM wa.
INSERT dbtab FROM TABLE itab.
2.Update System Table
UPDATE
UPDATE dbtab FROM wa.
UPDATE dbtab FROM TABLE itab.
3.Modify System Table（根据 表的KEY做更新和插入）
MODIFY dbtab FROM wa.
MODIFY dbtab FROM TABLE itab.
4.Delete System Table
DELETE dbtab FROM wa.
DELETE dbtab FROM TABLE itab.
dbtab: SYSTEM DDIC table.
wa: Working Area
itab: Internal Table.
INSERT INTO dbtab VALUES wa.
INSERT dbtab FROM wa.
INSERT dbtab FROM TABLE itab.
2.Update System Table
UPDATE
UPDATE dbtab FROM wa.
UPDATE dbtab FROM TABLE itab.
3.Modify System Table（根据 表的KEY做更新和插入）
MODIFY dbtab FROM wa.
MODIFY dbtab FROM TABLE itab.
4.Delete System Table
DELETE dbtab FROM wa.
DELETE dbtab FROM TABLE itab.
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/25876649/viewspace-2071749/ ，如需转载，请注明出处，否则将追究法律责任。
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