下面是`DELETE FROM`语句的基本语法: ``` DELETE FROM <database table> [WHERE <condition>]. ``` 其中: - `<database table>`是要删除行的数据库表的名称。 - `<condition>`是一个可选的条件,只有满足条件的行才会被删除。 以下是一些示例: 1.删除数据库表`ZEMPLOYEE`中所有行: ```abap DELETE ...
1、在使用DELETE FROM TABLE删除数据库表的数据时,无需所有字段数据完全一致,只需要关键字的值完全一致就可以删除掉 2、在删除数据时如果可以通过关键字来删除数据,最好不要用RANGE内表进行删除,因为效率很低,可以用DELETE FROM TABLE来删除,因为会覆盖所有关键字所以效率高,但前提是在读取需要删除的数据时,最好不...
DELETE <dbtab> FROM TABLE <itab>. Here all the lines in the database table that matching the primary keys in the specified internal table will be deleted. Delete from the Cluster database tables Syntax DELETE FROM DATABASE <dbtab>(<ar>) ID <key>. Here the cluster area (<ar>) with...
DELETETABLElt_dataFROM<ls_data>. <ls_data> 即是要删掉的数据,该数据在lt_data中是存在的,<ls_data>本就是lt_data表loop出来的,不会存在数据不对应的问题。 首先解析该语法,通过F1 DOCU可以查到如下语句: If the USING KEY addition is not specified, theprimary table keyis used. If the USING KEY...
Data: text type n, exam type i. //定义了两个变量 Describe field text edit mask i. //将变量text的长度存放于变量中 Write: i . //打印变量text的长度值三、 TERNAL TABLES 内表为了在内存中处理多条记录,不能使用结构,而要使用INTERNAL TABLE 他有三种形式:lSTANDARD TABLESlSORTED TABLESlHASHED TAB...
Deletes a row in a database table. The row is specified using aWHEREcondition. DELETE FROM demo_update WHERE id = 'X'. Variant 2 DELETE target FROM source. Effect In the variantDELETE target FROM, either a row specified by awork areais deleted or multiple rows specified by aninternal ta...
● Delete database table:The table and all its indexes are deleted from the database. The runtime object and all ABAP Dictionary sources remain.● Activate and adjust database:The revised version of the table is activated and the database table is adjusted to this modified table definition. ...
ABAP中的FROM语句是用于从数据库表中检索数据的语句。它通常与SELECT语句一起使用,用于指定要从哪个数据库表中检索数据。 以下是FROM语句的一般语法样式: 代码语言:javascript 复制 SELECT<fields>FROMTABLE<database_table>[WHERE<conditions>][GROUPBY<group_fields>][HAVING<having_conditions>][ORDER...
DELETE ADJACENT DUPLICATES FROM i_dept COMPARING pernr. Move the Creator of Reservation to a diff table LOOP AT i_res. MOVE-CORRESPONDING i_res TO i_rep. APPEND i_rep. CLEAR i_rep. ENDLOOP. SORT i_rep BY usnam rsnum rspos. ENDFORM. " Fetch_Data &--- *& Form process_data &-...
*HASHED TABLE:只能为WITH UNIQUE KEY。 DATA ITAB_HASHED TYPE HASHED TABLE OF MARA WITH UNIQUE DEFAULT KEY. [ WITH [UNIQUE | NON-UNIQUE] {{KEY [primary_key [ALIAS key_name] COMPONENTS] comp1 comp2 ...} | {DEFAULT KEY} } ]"主键索引 ...