Information required for generated SQL

Hello
I've done a few odi projects. In most of the RT operation when I check the operator code I saw that:
Insert into... .in 1 = 1;
or
Select... Of... where 1 = 1;
Does that mean 1 = 1?
There is no variable when or where condition.

Please years
Thank you

Hi Sarah Perreault,.

1 = 1 is a condition that is always true, and which is sometimes used in queries.

ODI uses in the generated code to valid questions with or without filters. Adding a filter will add a string: 'AND filter_condition.

Without filter:

select * from table
where 1 = 1
;

which is the same as select * from table;

Add a filter:

select * from table
where 1 = 1
and col1 = 42
;

Always-false conditions are also sometimes used by SQL developers. If you want to duplicate a table structure without duplicating the data:

create table2 as
select * from table1
where 1 = 2;

Any line that is not returned, so some rows in the new table, but the structure is the same :).

It will be useful.

Kind regards
JeromeFr

Tags: Business Intelligence

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