I am getting a variable as x=2006/01/18
now I have to extract each field from it.
Like x1=2006, x2=01 and x3=18.
Any idea how?
Thanks a lot for help.
Thanks
CSaha (6 Replies)
Dear friends,
I'm a novice Unix user and I'm trying to learn the ropes. I have a big task I have to accomplish and I'm convinced Unix can get the job done, I just haven't figured out how. I recently posted on the topic of cutting text between unique text patterns and somebody helped me a great... (24 Replies)
Hi,
i have a line with several fields (indefinite number of - count varies) separated by colon.
Now, i need to pick each field (except the first one) and have it assigned to variable within a loop. In other words, in the first iteration of the loop, the variable must be assigned with 2nd... (2 Replies)
Greetings,
I would like to extract records from a fixed width text file that have unique field elements.
Data is structured like this:
John A Smith NY
Mary C Jones WA
Adam J Clark PA
Mary Jones WA
Fieldname / start-end position
Firstname 1-10... (8 Replies)
I need some assistance, I am writing a script in bash.
I want to do two things:
1/. I want to replace the LF at the end of the RFH Ø ¸MQSTR ¸ so I can process the file record by record using a while loop.
2/. I want to extract two fields from each record, they are identified with... (1 Reply)
I am need to extract a number of values from a file, put have now clue how to do this.
The file looks like this:
# My file
Dest=87;CompatibleSystemSoftwareVersion=2.5300-;
Dest=87;ImageVersion=000061f3;SystemSoftwareVersion=2.5300;CDN=http://my.backup.com/download.txt;CDN_Timeout=30;
I... (3 Replies)
Hi,
I have multiple files in a directory all I am trying to do is to read the files in the directory and extract data from 2nd field till 10th field and put it in a new files. The files are pipe delimited. The new file will have the same name as the old file but the prefix of PRE_oldfilename.
... (1 Reply)
Hi,
I need to extract last character of the field retrieved from the database using select command.
eg:
select event,text from event_data;
o/p: Event1,text1
But I need to extract only '1' from the fields...similarly '2' from Event2,text2 and '3' from Event3,text3 etc., and need to pass... (6 Replies)
I have one file A.txt which is comma separated and I want to extract first 4 field's in a file and also I want to add one more column in output
A.txt in output for all records. A.txt should not be hard coded since I do not filename it may be any file. (1 Reply)
Hello All,
I have a requirement to split the input.xml file different files and i have tried using earlier examples(where i have posted in the forum), but still no luck
Here is my input.xml
<jms-system-resource>
<name>UMSJMSSystemResource</name>
... (4 Replies)
Discussion started by: Siv51427882
4 Replies
LEARN ABOUT REDHAT
ecpg
ECPG(1) PostgreSQL Client Applications ECPG(1)NAME
ecpg - embedded SQL C preprocessor
SYNOPSIS
ecpg [ option... ] file...
DESCRIPTION
ecpg is the embedded SQL preprocessor for C programs. It converts C programs with embedded SQL statements to normal C code by replacing the
SQL invocations with special function calls. The output files can then be processed with any C compiler tool chain.
ecpg will convert each input file given on the command line to the corresponding C output file. Input files preferrably have the extension
.pgc, in which case the extension will be replaced by .c to determine the output file name. If the extension of the input file is not .pgc,
then the output file name is computed by appending .c to the full file name. The output file name can also be overridden using the -o
option.
This reference page does not describe the embedded SQL language. See the PostgreSQL Programmer's Guide for that.
OPTIONS
ecpg accepts the following command-line arguments:
-c Automatically generate C code from SQL code. Currently, this works for EXEC SQL TYPE.
-D symbol
Define a C preprocessor symbol.
-I directory
Specify an additional include path, used to find files included via EXEC SQL INCLUDE. Defaults are . (current directory),
/usr/local/include, the PostgreSQL include directory which is defined at compile time (default: /usr/local/pgsql/include), and
/usr/include, in that order.
-o filename
Specifies that ecpg should write all its output to the given filename.
-t Turn on autocommit of transactions. In this mode, each query is automatically committed unless it is inside an explicit transaction
block. In the default mode, queries are committed only when EXEC SQL COMMIT is issued.
-v Print additional information including the version and the include path.
---help
Show a brief summary of the command usage, then exit.
--version
Output version information, then exit.
NOTES
When compiling the preprocessed C code files, the compiler needs to be able to find the ECPG header files in the PostgreSQL include direc-
tory. Therefore, one might have to use the -I option when invoking the compiler (e.g., -I/usr/local/pgsql/include).
Programs using C code with embedded SQL have to be linked against the libecpg library, for example using the flags -L/usr/local/pgsql/lib
-lecpg.
The value of either of these directories that is appropriate for the installation can be found out using pg_config(1).
EXAMPLES
If you have an embedded SQL C source file named prog1.pgc, you can create an executable program using the following sequence of commands:
ecpg prog1.pgc
cc -I/usr/local/pgsql/include -c prog1.c
cc -o prog1 prog1.o -L/usr/local/pgsql/lib -lecpg
SEE ALSO
PostgreSQL Programmer's Guide for a more detailed description of the embedded SQL interface
Application 2002-11-22 ECPG(1)