Table/Structure Field list used by SAP ABAP Function Module DB_ALTER_TABLE_TEST (TEST for ALTER TABLE)
SAP ABAP Function Module 
DB_ALTER_TABLE_TEST (TEST for ALTER TABLE) is using
| # | Object Type | Object Name | Object Description | Note |
|---|---|---|---|---|
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|
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| 1 |  Table/Structure Field |
DBFIELD - DEFAULTVAL | Default value for a DB column | |
| 2 | Table/Structure Field |
DBFIELD - NULLABLE | Null values allowed | |
| 3 | Table/Structure Field |
DBFIELD - DEFAULTPFX | Prefix/Suffix for a DB default value | |
| 4 | Table/Structure Field |
DBFTYPE - DEFAULTPFX | Prefix/Suffix for a DB default value | |
| 5 | Table/Structure Field |
DD02L - TABNAME | Table Name | |
| 6 | Table/Structure Field |
DDFIELD - FIELDNAME | Field Name | |
| 7 | Table/Structure Field |
DDFIELD - NULLABLE | Null values allowed | |
| 8 | Table/Structure Field |
DDFIELD - POSITION | Position of the field in the table | |
| 9 | Table/Structure Field |
DDREFSTRUC - BOOL | DD: truth value | SOURCE VALUE(DEFMOD_LOCK) LIKE DDREFSTRUC-BOOL DEFAULT SPACE |
| 10 | Table/Structure Field |
DDREFSTRUC - BOOL | DD: truth value | |
| 11 | Table/Structure Field |
DDREFSTRUC - BOOL | DD: truth value | SOURCE VALUE(NULLMOD_LOCK) LIKE DDREFSTRUC-BOOL DEFAULT SPACE |
| 12 | Table/Structure Field |
DDREFSTRUC - BOOL | DD: truth value | SOURCE VALUE(PRINTFLAG) LIKE DDREFSTRUC-BOOL DEFAULT SPACE |
| 13 | Table/Structure Field |
FIELDSTRUC - DATATYPE | Data Type in ABAP Dictionary | |
| 14 | Table/Structure Field |
FIELDSTRUC - DECIMALS | Number of Decimal Places | |
| 15 | Table/Structure Field |
FIELDSTRUC - DEFAULTVAL | Description for screen field: default value | |
| 16 | Table/Structure Field |
FIELDSTRUC - LENG | Length (No. of Characters) | |
| 17 | Table/Structure Field |
FIELDSTRUC - NAME | FIELDSTRUC-NAME | |
| 18 | Table/Structure Field |
FIELDSTRUC - NULLABLE | Field description for screen: null, not null, undefined | |
| 19 | Table/Structure Field |
FIELDSTRUC - VERSION | FIELDSTRUC-VERSION | |
| 20 | Table/Structure Field |
SYST - DBSYS | ABAP System Field: Central Database System | |
| 21 | Table/Structure Field |
SYST - TABIX | ABAP System Field: Row Index of Internal Tables | |
| 22 | Table/Structure Field |
SYST - VLINE | ABAP System Field: Vertical Line for List |
