USER Dialog : SelectION SCREENS 涉及内容:概念: PARAMETERS -- SINGLE FIELDS Select-OPTION --- VALUE SETS 事件:INITIALIZATION AT SelectTION-SCREEN系统参数:MESSAGE 格式命令: ***注:程序显示行号参考最下图 SAMPLE 1 :SAPBC400DDD_Select_SINGLE *&---* *& Report SAPBC400DDD_Select_SINGLE * *& rea...
使用SELECT语句选择查询: SY-SUBRC = 0: 至少有一行数据,当ENDSELECT语句执行完,SY-DBCNT中保存着记录的个数。 SY-SUBRC = 4: 没有数据。 SY-SUBRC = 8: 只有使用“SELECT SINGLE FOR UPDATE”时才会有, 表示: WHERE条件指定的记录不止一行,结果是没有记录被选中。 使用INSERT语句,向表中插入一行,必须注意...
SELECT SINGLE * FROM spfli WHERE carrid = 'LH' AND connid = '0400' INTO CORRESPONDING FIELDS OF @wa. Example The programDEMO_SELECT_SINGLE_VS_UP_TOcompares the performance ofSELECTstatements with the additionSINGLEwith similar statements with the additionUP TO 1 ROWS. ...
AT SelectTION-SCREEN系统参数:MESSAGE格式命令: ***注:程序显示行号参考最下图 SAMPLE 1:SAPBC400DDD_Select_SINGLE *&---* *& Report SAPBC400DDD_Select_SINGLE * *& reading form database = Select SINGLE * *&---* REPORT sapbc400ddd_select_single . * workarea for datas from the database D...
2, 避免使用SELECT *, 尽量使用SELECT A B C INTO TABLE ITAB这样的语句。这个操作会将所有符合条件的数据一次性地读进内表,这比在SELECT A B C INTO WA… APPEND… ENDSELECT的循环中添加数据到内表要快。不用频繁的读DB. 3, 避免频繁使用SELECT SINGLE语句, 特别是在LOOP和SELECT…ENDSELECT里面用, 应...
Example: TABLES SPFLI. SELECT SINGLE * FROM SPFLI WHERE PLANT =’CHUNGLI’ AND TEL=’4526174’. WRITE: / SPFLI-COMPANY,SPFLI-PLANT,SPFLI-TEL. 3.将读取的记录存放至 Work Area 语法: SELECT ….. INTO <wa> Example: TABLES SPFLI. DATA WA LIKE TABLES. ...
ABAP里SELECT的用法汇总(转) 2019-12-11 10:52 −通常使用Open SQL的数据查询语句SELECT将数据库条目选择到内存。一.SELECT语句:1)SELECT用于确定读取数据表中的哪些字段;2)FROM子句用于确定从哪些内表或者视图中读取数据;3)INTO用于确定将数据读取到程序内的哪些数据对象;4)WHERE用于限定选择条件;SELECT s... ...
When using SINGLE, it is not possible to specify an internal table as target object, and the addition SINGLE cannot be combined with all additions of the SELECT statement.The SELECT clause select_clause defines the structure of the results set of the SELECT statement. It consists mainly of a...
The SELECT SINGLE addition only selects one record. Originally this required you to include the full key within the where clause, and to retrieve 1 row without the full key you had to use the "UP TO" addition. This is no longer the case and you can use SELECT SINGLE without the full...
3、使用视图代替基本表查询 不推荐 Select * from zcntry where cntry like ‘IN%’. Select single * from zflight where cntry = zcntry-cntry and airln = ‘LF’. Endselect. 推荐 Select * from zcnfl where cntry like ‘IN%’ and airln = ‘LF’. Endselect. ...