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Full Discussion: how this works?
Top Forums Programming how this works? Post 302232244 by vidyadhar85 on Thursday 4th of September 2008 07:24:28 AM
Old 09-04-2008
Quote:
Originally Posted by vijay_0209
pls explain me how this works....

DECODE (SUBSTR (field, 1, 1),'''', '''''' || field || '''','''' || field || '''')


here field is a column in an oracle table....
it means if substr of field column that is from 1st char to 2nd char is " a double quote it will be decoded as two double quotes ""concated with field then again a double quote and a single quote or else "' concated with field and "'
decode works as nested if or switch case..
for more info on decode just search in google...
 

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MDBTools(1)															       MDBTools(1)

NAME
mdb-export - Export data in an MDB database table to CSV format. SYNOPSIS
mdb-export [-H] [-d delimiter] [-R row_delim] [[-Q] | [-q quote [-X escape]]] [-I] [-D format] database table DESCRIPTION
mdb-export is a utility program distributed with MDB Tools. It produces a CSV (comma separated value) output for the given table. Such output is suitable for importation into databases or spread- sheets. OPTIONS
-H Supress header row -Q Don't wrap text-like fields (text, memo, date) in quotes. If not specified text fiels will be surrounded by " (double quote) char- acters. -d Specify an alternative column delimiter If no delimiter is specified, table names will be delimited by a , (comma) character. -R Specify a row delimiter -I INSERT statements (instead of CSV). You must specify the SQL dialect. -D Set the date format (see strftime(3) for details) -q Use to wrap text-like fields. Default is ". -X Use to escape quoted characters within a field. Default is doubling. -N namespace Prefix identifiers with namespace. NOTES
ENVIRONMENT
MDB_JET3_CHARSET Defines the charset of the input JET3 (access 97) file. Default is CP1252. See iconv(1). MDBICONV Defines the output charset to use for the SQL file. Default is UTF-8. mdbtools must have been compiled with iconv. MDBOPTS semi-column separated list of options: o use_index o no_memo o debug_like o debug_write o debug_usage o debug_ole o debug_row o debug_props o debug_all is a shortcut for all debug_* options SEE ALSO
gmdb2(1) mdb-hexdump(1) mdb-prop(1) mdb-sql(1) mdb-ver(1) mdb-array(1) mdb-header(1) mdb-parsecsv(1) mdb-schema(1) mdb-tables(1) HISTORY
mdb-export first appeared in MDB Tools 0.1. AUTHORS
The mdb-export utility was written by Brian Bruns. BUGS
Memo fields are allowed to contain a newline characters, the current program does nothing about this. 0.7 13 July 2013 MDBTools(1)
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