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danrega
2024-11-22 16:48:32 +01:00
parent 6818f152ff
commit 5085810a52
1 changed files with 19 additions and 13 deletions
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32
01_Internal_Tables.md
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@@ -1896,7 +1896,7 @@ ASSERT sy-tabix = 0.
#### Specifying a WHERE Condition in READ TABLE Statements
- The syntax `READ TABLE ... WHERE ...` searches for the first line that matches a `WHERE` condition.
- The value of `sy-tabix` is set when a line is found, while `sy-subrc` are set to either 0 or 4.
- The value of `sy-tabix` is set when a line is found, while `sy-subrc` is set to either 0 or 4.
- The `WHERE` condition can use comparison and predicate expressions (see the code snippet comments below for examples).
- Syntax options:
- The read result must be specified before the `WHERE` condition.
@@ -3015,11 +3015,7 @@ This is to emphasize that table expressions can be used in various read position
<br>
``` abap
IF itab[ 1 ] IS INITIAL.
...
ELSE.
...
ENDIF.
DATA(first_line) = itab[ 1 ].
"Using table expressions as arguments of built-in functions
IF line_exists( itab[ 1 ] ).
@@ -3566,10 +3562,20 @@ DATA(hashed_tab) = VALUE string_hashed_table( ( `a` ) ( `b` ) ( `c` ) ).
DATA(hashed_primary_idx) = line_index( hashed_tab[ table_line = `c` ] ).
"Index access in hashed tables only using a secondary table index
DATA hashed_tab2 TYPE TABLE OF string WITH EMPTY KEY WITH NON-UNIQUE SORTED KEY sk COMPONENTS table_line.
hashed_tab2 = hashed_tab.
TYPES: BEGIN OF s,
comp1 TYPE i,
comp2 TYPE i,
END OF s,
ttype TYPE HASHED TABLE OF s WITH UNIQUE KEY comp1 WITH NON-UNIQUE SORTED KEY sk COMPONENTS comp2.
DATA(hashed_tab2) = VALUE ttype( ( comp1 = 1 comp2 = 10 )
( comp1 = 2 comp2 = 8 )
( comp1 = 3 comp2 = 9 ) ).
"3
DATA(hashed_secondary_idx) = line_index( hashed_tab2[ KEY sk table_line = `c` ] ).
DATA(hashed_secondary_idx) = line_index( hashed_tab2[ KEY sk comp2 = 10 ] ).
"1
hashed_secondary_idx = line_index( hashed_tab2[ KEY sk comp2 = 8 ] ).
```
<p align="right"><a href="#top">⬆️ back to top</a></p>
@@ -3648,9 +3654,9 @@ For more information, see the [Dynamic Programming](06_Dynamic_Programming.md) A
RTTI example:
```abap
TYPES tab_type TYPE SORTED TABLE OF demo_struc_type
WITH UNIQUE KEY comp1
WITH NON-UNIQUE SORTED KEY sec_key ALIAS sk COMPONENTS comp2 comp3.
TYPES tab_type TYPE SORTED TABLE OF zdemo_abap_flsch
WITH UNIQUE KEY carrid connid
WITH NON-UNIQUE SORTED KEY sec_key ALIAS sk COMPONENTS countryfr cityto.
DATA itab TYPE tab_type.
DATA(tdo_d) = cl_abap_typedescr=>describe_by_data( itab ).
@@ -4048,7 +4054,7 @@ LOOP AT itab ASSIGNING <fs>.
IF CONV i( <fs>-text ) MOD 2 = 0.
DELETE itab INDEX tabix - 1.
ENDIF.
CATCH cx_sy_conversion_no_number .
CATCH cx_sy_conversion_no_number.
ENDTRY.
ENDLOOP.