ABAP SQL 使用CAST去创建自定义列内表
SELECT SINGLE
FROM demo_expressions
FIELDS CAST( num1 AS CHAR( 20 ) ) AS col1,
CAST( numlong1 AS CHAR( 20 ) ) AS col2,
CAST( dec3 AS CHAR( 20 ) ) AS col3,
CAST( dats2 AS CHAR( 20 ) ) AS col4
WHERE id = 'X'
INTO @DATA(result).

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