Using table comparison can we use multiple tables as source?
Using table comparison can we use multiple tables as source?
Thank you very much for the helpful info.
Table Comparison
1) Input Data coming in
2) Comparison table (table to which the data is compared)
3) Output (input rows with respective opcodes based on the comparison result of input dataset with the comparison table)
If your question is whether table comparison can accept union/join of multiple table sources, you can achieve by using merge/query transforms and then feeding to table comparison. Here, you have to be careful about choosing the primary keys inside table comparison
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Joshua..Well, you could do it dynamically by constructing location value:
SQL> CREATE TABLE emp_load
2 (
3 employee_number CHAR(5),
4 employee_dob CHAR(20),
5 employee_last_name CHAR(20),
6 employee_first_name CHAR(15),
7 employee_middle_name CHAR(15),
8 employee_hire_date DATE
9 )
10 ORGANIZATION EXTERNAL
11 (
12 TYPE ORACLE_LOADER
13 DEFAULT DIRECTORY tmp
14 ACCESS PARAMETERS
15 (
16 RECORDS DELIMITED BY NEWLINE
17 FIELDS (
18 employee_number CHAR(2),
19 employee_dob CHAR(20),
20 employee_last_name CHAR(18),
21 employee_first_name CHAR(11),
22 employee_middle_name CHAR(11),
23 employee_hire_date CHAR(10) date_format DATE mask "mm/dd/yyyy"
24 )
25 )
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27 )
28 /
Table created.
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select * from emp_load
ERROR at line 1:
ORA-29913: error in executing ODCIEXTTABLEOPEN callout
SQL> set serveroutput on
SQL> declare
2 v_exists boolean;
3 v_file_length number;
4 v_blocksize number;
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6 i number := 1;
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8 loop
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12 v_exists,
13 v_file_length,
14 v_blocksize
15 );
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22 execute immediate v_stmt;
23 end;
24 /
alter table emp_load location('info1.dat','info2.dat')
PL/SQL procedure successfully completed.
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EMPLO EMPLOYEE_DOB EMPLOYEE_LAST_NAME EMPLOYEE_FIRST_ EMPLOYEE_MIDDLE
EMPLOYEE_
56 november, 15, 1980 baker mary alice 0
01-SEP-04
87 december, 20, 1970 roper lisa marie 0
01-JAN-99
SQL> SY.
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