How to Solve ORA-01795: Maximum Expressions in List Error?

Workaround for ORA-01795: Maximum Expressions in List Error

The ORA-01795 error arises when a query exceeds the maximum allowable number of expressions in an IN clause, which is limited to 1000. To circumvent this issue, consider employing the following workaround:

In your query, you encounter this error because you have over 1000 values specified within the IN clause. To resolve this, break down the list into smaller groups and use multiple IN clauses. For instance:

select field1, field2, field3
from table1
where name in ('value1', 'value2', ..., 'value999')
    or name in ('value1000', ..., 'value1999')
    or ...;

By splitting the large IN clause into multiple smaller ones, you can bypass the 1000-expression limit and successfully execute the query.

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