SAP ABAP - Native SQL Overview

The term ‘Native SQL’ refers to all statements that can be statically transferred to the Native SQL interface of the database interface. Native SQL statements do not fall within the language scope of ABAP and do not follow the ABAP syntax. ABAP merely contains statements for isolating program sections in which Native SQL statements can be listed.
In native SQL, mainly database-specific SQL statements can be used. These are transferred unchanged from the native SQL interface to a database system and executed. The full SQL language scope of the relevant database can be used and the addressed database tables do not have to be declared in the ABAP Dictionary. There is also a small set of SAP specific Native SQL statements that are handled in a specific way by the native SQL interface.
To use a Native SQL statement, you have to precede it with the EXEC SQL statement and end with ENDEXEC statement.
Following is the syntax −
EXEC SQL PERFORMING <form>.  
   <Native SQL statement> 
ENDEXEC.

These statements define an area in an ABAP program where one or more Native SQL statements can be listed. The statements entered  are passed to the Native SQL interface and then processed as follows −
All SQL statements that are valid for the program interface of the addressed database system can be listed between EXEC and ENDEXEC, in particular the DDL (data definition language) statements.
All SQL statements that are valid for the program interface of the addressed database system can be listed between EXEC and ENDEXEC, in particular the DDL (data definition language) statements.
These SQL statements are passed from the Native SQL interface to the database system largely unchanged. The syntax rules are specified by the database system, especially the case sensitivity rules for database objects.
These SQL statements are passed from the Native SQL interface to the database system largely unchanged. The syntax rules are specified by the database system, especially the case sensitivity rules for database objects.
If the syntax allows a separator between individual statements, you may include many Native SQL statements between EXEC and ENDEXEC.
If the syntax allows a separator between individual statements, you may include many Native SQL statements between EXEC and ENDEXEC.
SAP specific Native SQL language elements can be specified between EXEC and ENDEXEC. These statements are not passed directly from the Native SQL interface to the database, but they are transformed appropriately.
SAP specific Native SQL language elements can be specified between EXEC and ENDEXEC. These statements are not passed directly from the Native SQL interface to the database, but they are transformed appropriately.
SPFLI is a standard SAP Table that is used to store Flight schedule information. This is available within R/3 SAP systems depending on the version and release level. You can view this information when you enter the Table name SPFLI into the relevant SAP transaction such as SE11 or SE80. You can also view the data contained in this database table by using these two transactions.
REPORT ZDEMONATIVE_SQL. 
DATA: BEGIN OF wa,  
      connid  TYPE SPFLI-connid,
      cityfrom TYPE SPFLI-cityfrom,
      cityto  TYPE SPFLI-cityto,  
      END OF wa. 
	
DATA c1 TYPE SPFLI-carrid VALUE 'LH'. 
EXEC SQL PERFORMING loop_output.
   SELECT connid, cityfrom, cityto  
   INTO :wa  
   FROM SPFLI  
   WHERE carrid = :c1 
ENDEXEC. 

FORM loop_output.  
   WRITE: / wa-connid, wa-cityfrom, wa-cityto. 
ENDFORM.
The above code produces the following output −
0400  FRANKFURT  NEW YORK 
2402  FRANKFURT  BERLIN 
0402  FRANKFURT  NEW YORK


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