The table "custom" is defined below. The "id" column and "introducer" column are of INTEGER type, and the "email" column is of TEXT type. id | email | introducer ----+-----------------+…

The table "custom" is defined below. The "id" column and "introducer" column are of INTEGER type, and the "email" column is of TEXT type. id | email | introducer ----+-----------------+------------ 2 | [email protected] | 1 3 | [email protected] | 2 4 | [email protected] | 2 Three SQL statements were executed in the following order:

UPDATE custom SET email = '' FROM custom c WHERE custom.introducer = c.id; UPDATE custom SET introducer = NULL WHERE introducer NOT IN (SELECT id FROM custom); DELETE FROM custom WHERE id = 2 OR introducer = 2; PostgreSQL CE PGCES-02 Exam Select the number of rows in the "custom" table after the execution.