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Open SQL in Release 3.0
RESET M2 Partial or complete specification of the WHERE condition at runtime when calling SELECT Specification of the name of the database table or of the view at runtime when calling SELECT, INSERT, UPDATE, MODIFY and DELETE Return of DUPREC errors from INSERT ... FROM TABLE itab Union of solution sets for SELECT with FOR ALL ENTRIES in itab Reading database lines by packets in SELECT with PACKAGE SIZE n Explicit cursor processing Select list with aggregate functions in SELECT INTO list for SELECT and FETCH

ABAP_MODIFICATION_1 Partial or complete specification of the WHERE condition at runtime when calling SELECT

The WHERE condition can be stored partially or entirely in an internal table. This means you can construct WHERE conditions dynamically at runtime. In contrast to a RANGES table, an internal table stores a WHERE condition in textual form. The internal table can then be accessed using SELECT ... WHERE (itab) or SELECT ... WHERE sql_cond AND (itab). itab refers to the name of the internal table and sql_cond to the statically specified part of the WHERE condition.


Examples and further information may be found in the documentation for the WHERE clause.

ABAP_MODIFICATION_2 Specification of the name of the database table or of the view at runtime when calling SELECT , INSERT, UPDATE , MODIFY and DELETE

The name of a database table or a view can be supplied dynamically as the contents of a field. Instead of specifying the table name directly in the source code, a field name in brackets is given. The contents of this field are interpreted as the table name.


Examples and further information may be found in the documentation for the FROM clause.

ABAP_MODIFICATION_3 Return of DUPREC errors from INSERT ... FROM TABLE itab

In cases where one or several lines cannot be inserted because lines with the specified keys already exist, a runtime error always occurred in the past. The addition ... ACCEPTING DUPLICATE KEYS has the effect of setting the return code SY-SUBRC to 4 rather than aborting the process. The remaining lines are then added after the command has been executed.


Further information may be found in the documentation of the command INSERT.

ABAP_MODIFICATION_4 Union of solution sets for SELECT with FOR ALL ENTRIES in itab

A SELECT command with ... FOR ALL ENTRIES IN itab WHERE sql_cond forms the union of solution sets of all SELECT commands that result if the fields of the internal table itab referenced in the WHERE condition were to be replaced by the actual values of a table line. This variant is very useful if, for example, an internal table is filled with pre-specified primary keys. All corresponding database lines can be selected with a single SELECT command. This technique avoids the need for a loop containing a SELECT SINGLE ... for each line of the internal table.


Examples and further information may be found in the documentation for the WHERE clause.

ABAP_MODIFICATION_5 Reading database lines by packets in SELECT with PACKAGE SIZE n

SELECT ... INTO TABLE itab PACKAGE SIZE n places the selected lines into the internal table in packets of n lines rather than all at once. Each new packet overwrites the contents of itab. This is a good way of making sure that the internal table does not get too big. If PACKAGE SIZE is used with SELECT ... APPENDING TABLE itab, the previous contents of itab are preserved and each new packet is added at the end of the table.


Examples and further information may be found in the documentation for the INTO clause.

ABAP_MODIFICATION_6 Explicit cursor processing

The commands OPEN CURSOR, FETCH and CLOSE CURSOR enable nested processing of one or several database tables without the need to keep redefining the datasets. By using the addition WITH HOLD, you can open a cursor which is then preserved across database commits.


Examples and further information may be found in the documentation for the ABAP commands OPEN CURSOR, FETCH and CLOSE CURSOR.

ABAP_MODIFICATION_7 Select list with aggregate functions in SELECT


Apart from SELECT *, SELECT COUNT( * ) and SELECT SINGLE *, you can specify the aggregate functions MIN, MAX , SUM, COUNT and AVG, and also fields of the database table in the select list. Specifying DISTINCT causes duplicate lines to be removed automatically from the solution set.


Examples and further information may be found in the documentation for the SELECT clause.

ABAP_MODIFICATION_8 INTO list for SELECT and FETCH


If the SELECT clause specifies a list, the INTO clause can include a list of ABAP fields of equal length to be used as the target area.


Examples and further information may be found in the documentation for the INTO clause.