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danrega
2024-08-15 17:02:26 +02:00
parent 492b801c6a
commit 839a48e86d
6 changed files with 109 additions and 19 deletions
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03_ABAP_SQL.md
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@@ -1996,8 +1996,30 @@ UPDATE dbtab FROM TABLE @itab.
UPDATE dbtab FROM TABLE @( VALUE #( ( comp1 = ... comp2 = ... )
( comp1 = ... comp2 = ... ) ) ).
"INDICATORS addition: Changing content of specific fields without overwriting
"existing values of other fields
"-------------------------- SET addition --------------------------
"Changing values of specific fields without overwriting other, non-specified
"fields
"Changing values of specific fields in all table rows
"There are mutliple options for the value assignment. E.g. you can use
"a literal, host variable/expression, SQL function, and so on.
"The following statement does not use a WHERE clause. Therefore,
"the comp2 values of all database table entries are changed.
UPDATE dbtab SET comp2 = 'X'.
"Changing values of specific fields in all found entries by restricting
"the data sets to be changed using a WHERE clause
"Use a comma-separated list for the components after SET
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'.
"--------------- INDICATORS ... SET STRUCTURE addition ---------------
"Similar to SET, using the INDICATORS ... addition, you can change content
"of specific fields without overwriting existing values of other fields by
"specifying set indicators.
"Example:
"- Structured type is created with WITH INDICATORS addition
"- Internal table from which to update dbtab is created;
@@ -2017,11 +2039,6 @@ UPDATE dbtab FROM TABLE @ind_tab INDICATORS SET STRUCTURE comp_ind.
"In the following example, the logic is reversed using NOT.
UPDATE dbtab FROM TABLE @ind_tab INDICATORS NOT SET STRUCTURE comp_ind.
"SET addition: Changing values of specific fields in all table rows
"There are mutliple options for the value assignment. E.g. you can use
"a literal, host variable/expression, SQL function, and so on.
UPDATE dbtab SET comp2 = ... .
```
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