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💅Article Summary: This article continues to give an in-depth explanation of the user-defined data type TYPES in ABAP! A more detailed introduction to the global data dictionary type will be explained in detail in the next chapter [Data Dictionary]!

🤟A Word of the Day: The edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from bitter cold.

in the previous article

SAP ABAP - Data Types (1) [Summary and Classification of Data Types]

Introduced the summary and classification of data types in SAP ABAP. We know the three types of data types in ABAP. This article follows the previous article and continues to give an in-depth explanation of the user-defined data type TYPES in ABAP! About the global data dictionary type A more detailed introduction will be explained in the next chapter[Data Dictionary]!

Table of contents

define a single type

Refer to predefined data type definitions

Refer to the global data dictionary type definition

Refer to the database table field definition

Refer to data element definition

Refer to the component definition in the data dictionary structure

Refer to class/interface definition

Redefine with reference to the user-defined data type

Define the structure type

Refer to predefined data type definitions

Refer to the global data dictionary type definition

Refer to the database table field definition

Refer to data element definition

Refer to the component definition in the data dictionary structure

Refer to the data dictionary structure definition

Refer to class/interface definition

Redefine with reference to the user-defined data type

Define internal table types (standard tables, sorted tables, hash tables)

Refer to the global data dictionary type definition

Refer to the database table definition

Refer to the data dictionary table type definition

Define internal table types with reference to the data dictionary structure

Redefine with reference to the user-defined data type

Redefinition with reference to the custom structure type

Redefinition with reference to the custom internal table type

define a single type

Refer to predefined data type definitions

 TYPES:CHAR_10 TYPE CHAR10, "10 bit string
       CHAR_20 TYPE C LENGTH 20, "20 bit string
       P_8_2   TYPE P LENGTH 8 DECIMALS 2. "16 digit variable, two decimal places

Refer to the global data dictionary type definition

The following lists the most common sample codes for defining common single types with reference to global data dictionary types:

• Refer to the database table field definition

TYPES:ZCARRID TYPE SFLIGHT-CARRID,
      ZCONNID TYPE SFLIGHT-CONNID,
      ZFLDATE TYPE SFLIGHT-FLDATE,
      ZPRICE  TYPE SFLIGHT-PRICE.

The database table sflight is as follows:

Database table sflight

• Refer to data element definition

 TYPES:ZCARRID TYPE S_CARR_ID,
       ZCONNID TYPE S_CONN_ID,
       ZFLDATE TYPE S_DATE,
       ZPRICE  TYPE S_PRICE.

The data elements used are defined in the above database table sflight:

Database table sflight

• Refer to the component definition in the data dictionary structure

  TYPES: ZFIELDNAME TYPE /EACA/O_CHAR_T-FIELDNAME.
  

The data dictionary structure/EACA/O_CHAR_T is as follows:

Data dictionary structure/EACA/O_CHAR_T

• Refer to class/interface definition

   TYPES:WCL_CONTAINER TYPE REF TO CL_GUI_CUSTOM_CONTAINER,
         WCL_ALV       TYPE REF TO CL_GUI_ALV_GRID.
  

Redefine with reference to the user-defined data type

The following sample code first selects one of the above-mentioned examples to define user-defined types, and then defines the same type with reference to the user-defined types respectively, with the suffix [_copy], showing how to redefine with reference to user-defined data types:

*First make a custom data type:
TYPES:CHAR_10 TYPE CHAR10,
      ZCARRID TYPE SFLIGHT-CARRID,
      ZCONNID TYPE S_CONN_ID,
      ZFIELDNAME TYPE /EACA/O_CHAR_T-FIELDNAME,
      WCL_CONTAINER TYPE REF TO CL_GUI_CUSTOM_CONTAINER.

*Then refer to the data types defined above to define:
TYPES:CHAR_10_COPY       TYPE CHAR_10,
      ZCARRID_COPY       TYPE ZCARRID,
      ZCONNID_COPY       TYPE ZCONNID,
      ZFIELDNAME_COPY    TYPE ZFIELDNAME,
      WCL_CONTAINER_COPY TYPE WCL_CONTAINER.

Define the structure type

Refer to predefined data type definitions

TYPES:BEGIN OF TY_CLASS,
       TEA_NAME TYPE C LENGTH 10,
       TEA_ID   TYPE N LENGTH 8,
       STU_NAME TYPE C LENGTH 10,
       STU_ID   TYPE N LENGTH 8,
     END OF TY_CLASS.

Refer to the global data dictionary type definition

The following lists the most common sample codes for defining structure types with reference to global data dictionary types:

• Refer to the database table field definition

TYPES:BEGIN OF TY_SFLIGHT,
       ZCARRID  TYPE SFLIGHT-CARRID,
       ZCONNID  TYPE SFLIGHT-CONNID,
       ZFLDATE  TYPE SFLIGHT-FLDATE,
       ZPRICE   TYPE SFLIGHT-PRICE,
     END OF TY_SFLIGHT.

The database table sflight is as follows:

Database table sflight

• Refer to data element definition

TYPES:BEGIN OF TY_SFLIGHT,
       ZCARRID  TYPE S_CARR_ID,
       ZCONNID  TYPE S_CONN_ID,
       ZFLDATE  TYPE S_DATE,
       ZPRICE   TYPE S_PRICE,
     END OF TY_SFLIGHT.

• Refer to the component definition in the data dictionary structure

TYPES:BEGIN OF TY_/EACC/YS_WA_JOURNAL,
       ZPST_DAT        TYPE /EACC/YS_WA_JOURNAL-PST_DAT,
       ZACC_SYSTEM     TYPE /EACC/YS_WA_JOURNAL-ACC_SYSTEM,
       ZBUS_TRANS_CAT  TYPE /EACC/YS_WA_JOURNAL-BUS_TRANS_CAT,
       ZITEM_CAT       TYPE /EACC/YS_WA_JOURNAL-ITEM_CAT,
       ZJOURNAL        TYPE  /EACC/YS_WA_JOURNAL-JOURNAL,
     END OF TY_/EACC/YS_WA_JOURNAL.

The data dictionary structure /EACC/YS_WA_JOURNAL is as follows:

Data dictionary structure/EACC/YS_WA_JOURNAL

• Refer to the data dictionary structure definition

TYPES:TY_/EACC/YS_WA_JOURNAL TYPE /EACC/YS_WA_JOURNAL.

• Refer to class/interface definition

TYPES:BEGIN OF TY_ALV,
       WCL_CONTAINER TYPE REF TO CL_GUI_CUSTOM_CONTAINER,
       WCL_ALV       TYPE REF TO CL_GUI_ALV_GRID,
      END OF TY_ALV.

Redefine with reference to the user-defined data type

The following sample code first selects one of the above-mentioned examples to define user-defined types, and then defines the same type with reference to the user-defined types respectively, with the suffix [_copy], showing how to redefine with reference to user-defined data types:

TYPES:BEGIN OF TY_TEST,
       TEA_NAME               TYPE C LENGTH 10,
       ZCARRID                TYPE SFLIGHT-CARRID,
       ZCONNID                TYPE S_CONN_ID,
       ZPST_DAT               TYPE /EACC/YS_WA_JOURNAL-PST_DAT,
       GS_/EACC/YS_WA_JOURNAL TYPE /EACC/YS_WA_JOURNAL,
       WCL_CONTAINER          TYPE REF TO CL_GUI_CUSTOM_CONTAINER,
     END OF TY_TEST.

TYPES: TY_TEST_COPY TYPE TY_TEST."Refer to custom structure TY_TEST redefine

Define internal table types (standard tables, sorted tables, hash tables)

Refer to the global data dictionary type definition

The following lists the most common example codes for defining table types with reference to the global data dictionary type: the three table types of internal tables will be explained in more detail in the subsequent chapter [Internal Tables]!

• Refer to the database table definition

*Define standard table types
TYPES: TY_TAB_SFLIGHT  TYPE TABLE OF SFLIGHT ,
       TY_TAB_SFLIGHT1 TYPE STANDARD TABLE OF SFLIGHT ,
       TY_TAB_SFLIGHT2 TYPE TABLE OF SFLIGHT WITH NON-UNIQUE KEY CARRID CONNID FLDATE,
       TY_TAB_SFLIGHT3 TYPE STANDARD TABLE OF SFLIGHT WITH NON-UNIQUE KEY CARRID CONNID FLDATE.

*Define sort table type
TYPES: TY_TAB_SFLIGHT4  TYPE SORTED TABLE OF SFLIGHT ,
       TY_TAB_SFLIGHT5 TYPE SORTED TABLE OF SFLIGHT WITH UNIQUE KEY CARRID CONNID FLDATE,
       TY_TAB_SFLIGHT6 TYPE SORTED TABLE OF SFLIGHT WITH NON-UNIQUE KEY CARRID CONNID FLDATE.

*Define the hash table type
TYPES: TY_TAB_SFLIGHT7  TYPE HASHED TABLE OF SFLIGHT ,
       TY_TAB_SFLIGHT8 TYPE HASHED TABLE OF SFLIGHT WITH UNIQUE KEY CARRID CONNID FLDATE.

• Refer to the data dictionary table type definition

TYPES: TY_TAB_HRPERNR  TYPE  HRAHQ_PERNR_TABLE .

PS: [TYPE] is followed by the global table type (standard table, sorted table, hash table), so there is no need to use the [TYPE [STANDARD|SORTED|HASHED] TABLE OF] statement

• Define internal table types with reference to the data dictionary structure

*Define standard table types
TYPES:  TY_TAB_/EACC/YS_WA_JOURNAL  TYPE TABLE OF /EACC/YS_WA_JOURNAL ,
        TY_TAB_/EACC/YS_WA_JOURNAL1 TYPE STANDARD TABLE OF /EACC/YS_WA_JOURNAL ,
        TY_TAB_/EACC/YS_WA_JOURNAL2 TYPE TABLE OF /EACC/YS_WA_JOURNAL WITH NON-UNIQUE KEY PST_DAT 
ACC_SYSTEM BUS_TRANS_CAT.
        TY_TAB_/EACC/YS_WA_JOURNAL3 TYPE STANDARD TABLE OF /EACC/YS_WA_JOURNAL WITH NON-UNIQUE KEY PST_DAT 
ACC_SYSTEM BUS_TRANS_CAT.


*Define sort table type
TYPES:  TY_TAB_/EACC/YS_WA_JOURNAL4  TYPE SORTED TABLE OF  /EACC/YS_WA_JOURNAL ,
        TY_TAB_/EACC/YS_WA_JOURNAL5  TYPE SORTED TABLE OF  /EACC/YS_WA_JOURNAL WITH UNIQUE KEY PST_DAT 
ACC_SYSTEM BUS_TRANS_CAT,
        TY_TAB_/EACC/YS_WA_JOURNAL6  TYPE SORTED TABLE OF  /EACC/YS_WA_JOURNAL WITH NON-UNIQUE KEY 
PST_DAT ACC_SYSTEM BUS_TRANS_CAT.

*Define the hash table type
TYPES: TY_TAB_/EACC/YS_WA_JOURNAL7 TYPE HASHED TABLE OF /EACC/YS_WA_JOURNAL ,
       TY_TAB_/EACC/YS_WA_JOURNAL8 TYPE HASHED TABLE OF /EACC/YS_WA_JOURNAL WITH UNIQUE KEY PST_DAT 
ACC_SYSTEM BUS_TRANS_CAT.

The data dictionary structure /EACC/YS_WA_JOURNAL is as follows:

Data dictionary structure/EACC/YS_WA_JOURNAL

Redefine with reference to the user-defined data type

The following lists two sample codes for redefining the table type with reference to the custom data type: one method is to redefine the table type with reference to the custom structure, and the other method is to redefine the table type with reference to the custom table type

• Redefinition with reference to the custom structure type

*Define standard table types
TYPES:BEGIN OF TY_CLASS,
       TEA_NAME TYPE C LENGTH 10,
       TEA_ID   TYPE N LENGTH 8,
       STU_NAME TYPE C LENGTH 10,
       STU_ID   TYPE N LENGTH 8,
     END OF TY_CLASS.

*Define standard table types
TYPES: TY_TAB_CLASS  TYPE TABLE OF TY_CLASS ,
       TY_TAB_CLASS1 TYPE STANDARD TABLE OF TY_CLASS ,
       TY_TAB_CLASS2 TYPE TABLE OF TY_CLASS WITH NON-UNIQUE KEY  TEA_ID STU_ID,
       TY_TAB_CLASS3 TYPE STANDARD TABLE OF TY_CLASS WITH NON-UNIQUE KEY TEA_ID STU_ID.

*Define sort table type
TYPES: TY_TAB_CLASS4 TYPE SORTED TABLE OF TY_CLASS ,
       TY_TAB_CLASS5 TYPE SORTED TABLE OF TY_CLASS WITH UNIQUE KEY TEA_ID STU_ID,
       TY_TAB_CLASS6 TYPE SORTED TABLE OF TY_CLASS WITH NON-UNIQUE KEY TEA_ID STU_ID.

*Define the hash table type
TYPES: TY_TAB_CLASS7  TYPE HASHED TABLE OF TY_CLASS ,
       TY_TAB_CLASS8 TYPE HASHED TABLE OF TY_CLASS WITH UNIQUE KEY TEA_ID STU_ID.

• Redefinition with reference to the custom internal table type

*Define the structure first
TYPES:BEGIN OF TY_CLASS,
       TEA_NAME TYPE C LENGTH 10,
       TEA_ID   TYPE N LENGTH 8,
       STU_NAME TYPE C LENGTH 10,
       STU_ID   TYPE N LENGTH 8,
     END OF TY_CLASS.

*Define standard table types
TYPES: TY_TAB_CLASS      TYPE STANDARD TABLE OF TY_CLASS WITH NON-UNIQUE KEY TEA_ID STU_ID,
       TY_TAB_CLASS_COPY TYPE TY_TAB_CLASS ."Refers to defined standard table types TY_TAB_CLASS redefine

*Define sort table type
TYPES: TY_TAB_CLASS1      TYPE SORTED TABLE OF TY_CLASS WITH NON-UNIQUE KEY TEA_ID STU_ID,
       TY_TAB_CLASS2      TYPE SORTED TABLE OF TY_CLASS WITH UNIQUE KEY TEA_ID STU_ID,
       TY_TAB_CLASS_COPY1 TYPE TY_TAB_CLASS1, "Refers to a defined sort table type TY_TAB_CLASS1 redefine
       TY_TAB_CLASS_COPY2 TYPE TY_TAB_CLASS1. "Refers to a defined sort table type TY_TAB_CLASS2 redefine

*Define the hash table type
TYPES: TY_TAB_CLASS3      TYPE HASHED TABLE OF TY_CLASS WITH UNIQUE KEY TEA_ID STU_ID,
       TY_TAB_CLASS_COPY3 TYPE TY_TAB_CLASS3 . "Refer to the defined hash table type TY_TAB_CLASS3 redefine