新语法汇总（持续更新）
FILTER关键字筛选内表数据
DATA: GT_FILTER TYPE HASHED TABLE OF GTY_ALV WITH UNIQUE KEY SEL. GT_FILTER = VALUE #( ( SEL = 'X' ) ). GT_ALV_SEL = FILTER #( GT_ALV IN GT_FILTER WHERE SEL = SEL ) .
FILTER关键字筛选内表数据
DATA: GT_FILTER TYPE HASHED TABLE OF GTY_ALV WITH UNIQUE KEY SEL. GT_FILTER = VALUE #( ( SEL = 'X' ) ). GT_ALV_SEL = FILTER #( GT_ALV IN GT_FILTER WHERE SEL = SEL ) .