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danrega
2024-08-19 15:39:37 +02:00
parent 500c10a5b6
commit 9978a87ab7
6 changed files with 450 additions and 79 deletions
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03_ABAP_SQL.md
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@@ -36,7 +36,7 @@
- [Using UPDATE](#using-update)
- [Using MODIFY](#using-modify)
- [Using DELETE](#using-delete)
- [Using of Constructor Expressions in ABAP SQL Statements](#using-of-constructor-expressions-in-abap-sql-statements)
- [Using Constructor Expressions in ABAP SQL Statements](#using-constructor-expressions-in-abap-sql-statements)
- [Example: Exploring ABAP SQL Statements Changing Data in Database Tables](#example-exploring-abap-sql-statements-changing-data-in-database-tables)
- [RAP-Specific ABAP SQL Variants](#rap-specific-abap-sql-variants)
- [More Information](#more-information)
@@ -1997,12 +1997,6 @@ UPDATE dbtab FROM TABLE @itab.
UPDATE dbtab FROM TABLE @( VALUE #( ( comp1 = ... comp2 = ... )
( comp1 = ... comp2 = ... ) ) ).
"Excursion: Constructor expression with VALUE and BASE
"The example assumes selecting an entry from a database, modifying it, and
"updating it again, but the non-modified entries shall remain unchanged.
SELECT SINGLE * FROM dbtab WHERE key = ... INTO @DATA(read_line).
UPDATE dbtab FROM @( VALUE #( BASE read_line comp2 = ... comp4 = ... ) ).
"-------------------------- SET addition --------------------------
"Changing values of specific fields without overwriting other, non-specified
"fields
@@ -2021,7 +2015,7 @@ UPDATE dbtab SET comp2 = 'X', comp3 = 'Y' WHERE comp4 > 100.
"Changing values of specific fields in a single database table entry
"Assume the entry can be uniquely identified by specifying key values
"in the WHERE clause
UPDATE dbtab SET comp2 = 'X' WHERE key1 = 'Y'.
UPDATE dbtab SET comp2 = 'X' WHERE key_field = 'Y'.
"--------------- INDICATORS ... SET STRUCTURE addition ---------------
"Similar to SET, using the INDICATORS ... addition, you can change content
@@ -2106,7 +2100,7 @@ DELETE dbtab FROM TABLE @( VALUE #( ( comp1 = ... )
<p align="right"><a href="#top">⬆️ back to top</a></p>
### Using of Constructor Expressions in ABAP SQL Statements
### Using Constructor Expressions in ABAP SQL Statements
[Constructor expressions](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenconstructor_expression_glosry.htm) can be very handy in ABAP SQL statements.
For more information about constructor expressions, see the ABAP Keyword Documentation and the [Constructor Expressions cheat sheet](05_Constructor_Expressions.md). Many additions are available.
@@ -2120,7 +2114,7 @@ INSERT dbtab FROM TABLE @( VALUE #( ( key_field = 1 comp1 = ... )
( key_field = 3 comp1 = ... ) ) ).
"Inserting a table row from a row created in place
"INSERT dbtab FROM @( VALUE #( key_field = 4 comp1 = ... ) ).
INSERT dbtab FROM @( VALUE #( key_field = 4 comp1 = ... ) ).
"FOR LOOP with VALUE
@@ -2129,12 +2123,12 @@ DATA(it) = VALUE some_it_type( ( key_field = 5 comp1 = ... )
( key_field = 7 comp1 = ... ) ).
"In the following example, the internal table from above is looped across. You
"can imagine modifying the components when mapping the fields (as inidicated by the
"concatentation in the example). In doing so, the internal table values are modified
"(or not) and inserted into the database table.
"can imagine modifying the components (or not) when mapping the fields (as indicated
"by the concatentation in the example). In doing so, the internal table values may or
"may be not modified and inserted into the database table.
INSERT dbtab FROM TABLE @( VALUE #( FOR wa IN it ( key_field = wa-key_field
comp1 = wa-comp1 && 'XYZ'
... ) ) ).
comp1 = wa-comp1 && 'XYZ'
... ) ) ).
"Using a constructor expression with VALUE and BASE in an UPDATE statement
"The example assumes selecting an entry from a database, modifying it, and updating it again,