insert into test_table values(1,’test1′);
insert into test_table values(2,’test2′);
insert into test_table values(3,’test3′);

select group_concat(cName separator ‘,’)
from test_table

+———————————-+
| group_concat(cName separator ‘,’) |
+———————————-+
| test1,test2,test3 |
+———————————-+

But now,I want to limit the group_concat to the first two rows of the result:

+———————————-+
| group_concat(name separator ‘,’) |
+———————————-+
| test1,test2 |
+———————————-+

Solution :
We cannot use the limit with the group_concat so the better solution is to go for SUBSTRING_INDEX like

SELECT
SUBSTRING_INDEX(group_CONCAT(cName) , ‘,’, 2) as cName from test_table

For verifying the source path use
Project(Menu)
=> Properties
=> Java Build Path
=> Source (select the appropriate src files)

After setting up the src
1) While running select the type of the application
2) Select the appropriate file with the main function

http://www.agavegroup.com/?p=32

convert mam.pdf document.png

you may get an error like this :
ERROR: /undefined in –get–
Operand stack:
–dict:6/6(L)–   F1   14   –dict:9/14(L)–   –dict:9/14(L)–   275   –dict:9/14(L)–   –dict:11/12(L)–   glyf
Execution stack:
%interp_exit   .runexec2   –nostringval–   –nostringval–   –nostringval–   2   %stopped_push   –nostringval–   –nostringval–   –nostringval–   false   1   %stopped_push   1   3   %oparray_pop   1   3   %oparray_pop   1   3   %oparray_pop   –nostringval–   –nostringval–   2   1   6   –nostringval–   %for_pos_int_continue   –nostringval–   –nostringval–   –nostringval–   –nostringval–   %array_continue   –nostringval–   false   1   %stopped_push   –nostringval–   %loop_continue   –nostringval–   –nostringval–   –nostringval–   –nostringval–   –nostringval–   –nostringval–   –nostringval–
Dictionary stack:
–dict:1127/1686(ro)(G)–   –dict:0/20(G)–   –dict:107/200(L)–   –dict:107/200(L)–   –dict:104/127(ro)(G)–   –dict:241/347(ro)(G)–   –dict:20/24(L)–   –dict:4/6(L)–   –dict:20/20(L)–   –dict:3/5(L)–   –dict:10/14(L)–   –dict:33/50(ro)(G)–   –dict:21/40(L)–
Current allocation mode is local
Last OS error: 2
ESP Ghostscript 815.02: Unrecoverable error, exit code 1
convert: Postscript delegate failed `mam.pdf’.
convert: missing an image filename `document.png’.
[manu@rc-170 imagemagic]$ /usr/lib/openoffice.org/program/soffice -invisible -headless -norestore -accept=”socket,host=127.0.0.1,port=8100;urp;” -nofirststartwizard & > /dev/null 2>&1
[1] 29233

Solution :

Upgrade the ghostscript to a newer version greater than 8.60

You must reset the Model on every loop iteration.
$this->{ Model Name } ->create();

Place the above line at the beginning of the loop for eg:

foreach() {
$this->{ Model Name } ->create();
/* actual code */
}

Replace the { Model Name } with the corresponding model name

This error can occur in either one of these two situations…

1. Your server does not support UTF-8 encoding;
OR
2. You have incorrect magic_quotes settings on your server.

To check your server settings
Create a php file and place the below lines in it

For working with the second problem magic_quote settings should be:

magic_quotes_gpc ON
magic_quotes_runtime OFF (same as the PHP default setting)
magic_quotes_sybase OFF (same as the PHP default setting)

Check the encoding of your ci_sessions database table field

change it to utf8_general_ci

for loop:

$this->image_lib->initialize($config);

end for loop

When using this library repeatedly it will initialize the image properties at once only.

It uses the existing instance for the remaining calls

To solve this problem call the initialize function manually.