Final answer:
The SQL query involves a left outer join between tables a and c on columns col1 and col3, and an inner join between tables a and b on column col1 to return all matching records with selected columns.
Step-by-step explanation:
The question deals with an SQL query involving a join operation between three tables, represented as a, b, and c. The query uses an Oracle-specific outer join syntax denoted by the (+) sign after col3, which indicates that it's a left outer join on col1 of table a and col3 of table c. The ‘select *’ part of the query means that it will retrieve all columns from the joined tables. Additionally, there is a join condition on col1 of table a and col2 of table b, suggesting an inner join between these two tables. Hence, the result will include all records from table b and records from table a and c that match these join conditions.