what is difference between READ TABLE syntax & DESCRIBE TABLE

[Former Member]

hi all

thanks in advance

plz tell me what is difference between READ TABLE syntax & DESCRIBE TABLE

syntax and meaning of then

how to usefull for us this syntax......

thanks

[Former Member]

Hi,

Read table will read the table contents to a work area as per the conditions givn where as describe will describe the table in terms of data.

Please refer to the links below:

Regards,

Himanshu

[Former Member]

Hi,

U have an internal table....and it has 50 rows(assume)

now u have to read a row(any row from 1 to 50)....to do dat use READ TABLE syntax....the additions to this syntax specifiec which row(1 to 50) u want to read....

now u need to know one of the mentioned things of that itab..( no of lines/type/initial memory define(occurs n) ) ....use DESCRIBE TABLE syntax.......

Cheers,

jose.

[Former Member]

hi

thanks

can u tell detail of this for deeply understanding

please tell me with example

that is use full for us

thanks

[vinod_vemuru2]

Hi,

READ TABLE is used to READ single record at a time from the internal table.

EX: READ TABLE i_vbak INTO wa_vbak INDEX sy-tabix.

READ TABLE i_vbak INTO wa_vbak WITH KEY vbeln = '12345'.

So the above statements will read the record from the internal table i_vbak and places them in work area wa_vbak.

DESCRIBE TABLE is used to find the properties of the internal table like how many records the internal table have.

EX: DESCRIBE TABLE i_vbak LINE l_count.

after executing this l_count will contain a value equal to number of records in i_vbak.

Go to F1 help for more explanation and more additions.

Thanks,

VINOD.

Edited by: Vinod Vemuru on Feb 29, 2008 7:11 PM

[Former Member]

READ table will reads the value in the field.

Describe table will gives the number of records in the internal table.

Regards,

Ajay

[Former Member]

Ex:

---READ table itab with key vbeln = gv_vbeln.

now it reads the value of vbeln where it matches the gv_vbeln.

u will get itab-vbeln.

--- DESCRIBE ITAB into gv_variable.

gv_varible has the number of records in the internal table.

Regards,

Ajay

[Clemenss]

Hi anand,

in ABAP editor, write DESCRIBE, put cursor on it, press F1. Repeat this process for the remaining commands. Come back with remaining questions.

Thanks a lot.

Regards,

Clemens

P.S: Come on Clemens...An H1 tag? -:)
Blag.

Edited by: Alvaro Tejada Galindo on Feb 29, 2008 10:14 AM