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In programming the danger of exploring the small details of coding is that you get obsessed with every line of code you write, thereby greatly reducing productivity.
In general, is not worth obsessing over code. On the other hand you should code with deliberation and intent. Steven Feurstein Oracle Magazine July /August 2004 A User Agent, like a web browser, uses HTTP to request a HTML document
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Oracle
Home >Oracle > sqlldr and plsql function
Oracle loading utility sqlldr allows to check, manipulate or define Oracle events during data loading linking the insert action to a plsql function. This is a first trivial example to show code and syntax to execute a plsql function while loading data via sqlldr. You need
file addresses.dat: via latina 12; via pio XII 132; piazza alberone 1; boulevard saint michelle 123; 128 street 8/a; 1 West street 13; Sutton square 9; The destination table is very simple:
create table list_address (address varchar2(256));
Event the sqlldr control file is very simple but it calls the plsql function fun_assign_country. The code basically says when loading the ADDRESS field execute the function fun_assign_country passing to it the ADDRESS value: file load_address.ctl LOAD DATA INFILE addresses.dat APPEND INTO TABLE list_address FIELDS TERMINATED BY ';' (ADDRESS "fun_assign_country(:ADDRESS)") Here function fun_assign_country code (of course, must be compiled by the same Oracle schema that executes sqlldr: function fun_assign_country create or replace function fun_assign_country(ADDRESS in varchar2) return varchar2 AS vADDRESS varchar2(256); begin if lower(ADDRESS) like '%via %' or lower(ADDRESS) like '%piazza%' then vADDRESS:=ADDRESS || ' (ITALY)'; return vADDRESS; end if; if lower(ADDRESS) like '%street%' or lower(ADDRESS) like '%square%' then vADDRESS:=ADDRESS || ' (GREAT BRITAIN)'; return vADDRESS; end if; return ADDRESS; end fun_assign_country; / Tested on unix HP To check and enjoy the results:
SQL> select * from list_address;
Dott. Marco Magnani - senior DBA / developer. Indipendent consultant: Rome, Bruxelles,New York
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Anger is creative, depression is useless.
Dyson, Freeman J. Anger is creative, depression is useless.
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Nicoleta e Marco Magnani tutorial, examples, courses, esempi, corsi, esercizi, appunti vari Dottoressa Nicoleta Dragu Formatrice Docente Insegnante Mediatrice Culturale Dott. Marco Magnani Universita La Sapienza Roma Master Computer Science Hunter College New York , Data Base Administrator DBA oracle System architect |