Sql Loader Is Ignoring Null Data Columns
Last updated on SEPTEMBER 07, 2015
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 7.3.0 to 11.1]
Information in this document applies to any platform.
This problem can occur on any platform.
-- Problem Statement:
Using SQL* Loader to load data and SQL*Loader does not recognize NULL values coming from the data file .
SQL*Loader is loading the data from the field after the consecutive delimiters into the column the NULL value should be loaded into.
Control file ------------ OPTIONS (ERRORS=999, SKIP=1) LOAD DATA INFILE '<File Path>' APPEND INTO TABLE CIRCWS.AD_USER_GROUPS FIELDS TERMINATED BY '^' OPTIONALLY ENCLOSED BY '"' ( OBJECT_PATH, OBJECT_NAME, ADSPATH, NAME, DISPLAYNAME nullif DISPLAYNAME = BLANKS, MEMBEROF char(100000), MEMBER, DISTINGUISHEDNAME, CN, DESCRIPTION, GROUPTYPE, SAMACCOUNTNAME, IS_PRIMARY ) Consecutive Delimiters Data File | V LDAP://occ.cian.com^CIAN^LDAP://occ.cian.com^Exchange System^^CN=Domain | | | | | | | | V | V V OBJECT_PATH | ADSPATH NAME V OBJECT_NAME
It starts by reading the data and as soon as it comes to a terminator, it knows that data goes to the corresponding column as defined in the control file.
When it comes to consecutive terminators ^^ instead of reading the zero-length string between them as a NULL it continues on and it starts to load the data for the next column into the column where the NULL should have been loaded into.
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