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SAP HANA is popularly referred to as an in-memory, columnar, relational database management system RDBMS, for storing and real-time operation of enormous volumes of data. SAP HANA Administration Training is being adopted a lot of by the enterprises that are observing differentiating their offerings with speed and real intelligence. This path-breaking technology is deployed on-premise and additionally on-cloud. This course meant for apt proficiency in administration, operation, and support of the in-memory platform – SAP HANA- whereas process high-volumes of data in the period of time. It includes each info administration and user management. However, info administrator can beware of most stuff like sound unit stops/begin performance standardization and keep a copy admin part.

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Data types of internal table The internal table is fully stated by line type, table and key type.

Line type: The line type of an internal table can be any data type. The data type of an internal table is normally a structure. Each component of the structure is a column in the internal table.

However, the line type may also be elementary or another internal table.

Table type : In table type abap will access particular table entries. The internal tablesare three type – standard, sorted and hashed tables.

You can create internal table as a database by using types statements. This statement use LIKE or TYPE clause to an existing table.

The syntax to create internal table is: TYPES <internal_tab> TYPE|LIKE <internal_tab_type> OF <line_type_itab> WITH <key> INITIAL SIZE <size_number>. www.AspireIT.Net

What is work area?

Work area is a single row of data. Work area is a variable declared with type of an database table. It can save only one file at time. It is like a structure declared in c.

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There are two types of internal table: 1.

2.

Internal tables with HEADER lines Internal table without HEADER lines

Internal Tables with Header Line • Here the system automatically creates the work area.

• The work area has the same data type as internal table.

• This work area is called the HEADER line.

• It is here that all the changes or any of the action on the contents of the table are done.

As a result of this, records can be directly inserted into the table or accessed from the internal table directly.

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Internal Tables without Header Line • Here there is no work area associated with the table.

• Work area is to be explicitly specified when we need to access such tables.

• Hence these tables cannot be accessed directly.

Internal table is a temporary two dimensional memory structure similar to database table. We can store multiple files in internal table.

Work area is a variable declared with TYPE of a database table. It will store only one file at a time.

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Create internal table: Internal table with type statement The Syntax is Types : begin of line, column1 type I, column2 type I, end of line.

By referring other table You can create internal table with existing table.

Syntax : Data <f> <type> [with header line]. www.AspireIT.Net

Populating internal tables: 1) Append Data: By using append stmt you can add one line from other work area.

Syntax: APPEND [<wa> TO / INITIAL LINE TO] <itable>. <wa> Here work area The initial line is appended to the internal table 2) Collect statement: The COLLECT statement is used for populate internal table. Basically it used for inserting line to internal table with unique standard key.

Syntax: COLLECT [<wa> INTO] <itable>.

3) Insert statement: Insert statement is used for adding lines to the internal table. We can use INDEX clause with insert statement for adding new lines.

Syntax: INSERT [<wa> INTO / INITIAL LINE INTO] <itable> [index <idx>]. <wa> is work area Initial line is inserted in to internal table <itable> at index <idx>. www.AspireIT.Net

Copying Internal Tables The contents of one internal table can be copied to another by using the APPEND LINES or INSERT LINES statement. A more simpler way is to usetany of the following syntax's.

MOVE <itab1> To <itab2>.

OR <itab1> = <itab2>.

Read Internal Tables 1) Using Loop -Endloop Syntax: LOOP AT <itable> [INTO <wa>] ..............

ENDLOOP.

the internal table ITABLE is read line by line. You can access the values of the columns for that line during any part of the LOOP-ENDLOOP structure. The value of the SY-SUBRC is set to 0, even if only one record is read. www.AspireIT.Net

Using Read : Syntax: READ TABLE <itable> [INTO <wa>] INDEX <idx>.

This statement reads the current line or line as specified by index <idx>. The value of SY-TABIX is the index of the line read. If an entry with the specified index is found, then SY-SUBRC is set to 0. If the specified index is less than 0, then run-time error occurs. If the specified index exceeds table size then SY-SUBRC is set to 4.

Deleting internal tables: Deleting lines in a loop: Syntax: DELETE <ITABLE>.

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