Get PostgreSQL PGCES-02 Exam Dumps

Select two suitable statements regarding a postmaster process.

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 |

aaa@example.com | 1 3 |

bbb@example.com | 2 4 |

ccc@example.com | 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; Select the number of rows in the "custom" table after the execution.

Select two SQL statements which abort a transaction.

Select two incorrect descriptions regarding the following SQL statements.

CREATE TABLE cities ( name text,

population float ); CREATE

TABLE capitals ( state

char(2) ) INHERITS

(cities);

Select two incorrect statements regarding large objects.