Select two correct statements from below concerning the ANALYZE command.

It renews the statistical information of the table content.

If ANALYZE is insufficient, the most efficient search plan will not be selected for queries.

It takes some time to execute, but it does not lock the table.

If the FULL option is used when executing, the size of the file can be reduced.

If ANALYZE is not used at all, there are times when it becomes impossible to see any of the data.

The table "foo" is defined as follows: CREATE TABLE foo (bar TEXT); Next, four SQL statements were executed in the following order. INSERT INTO foo VALUES ('bar'); -------- (1) ALTER TABLE foo ADD COLUMN c1 TEXT; ---- (2) ALTER TABLE foo ADD UNIQUE (c1); ------- (3) ALTER TABLE foo DROP COLUMN bar; ------- (4) Select the correct statement from those below.

An error occurs when executing the (1) SQL statement.

An error occurs when executing the (2) SQL statement.

An error occurs when executing the (3) SQL statement.

An error occurs when executing the (4) SQL statement.

Select the most appropriate setting to output the log messages of the database to syslog.

'log_destination = syslog' in postgresql.conf.

'syslog = true' in postgresql.conf.

'log_destination = 0' in postgresql.conf.

'log_destination = 1' in postgresql.conf.

'log_destination = 2' in postgresql.conf.

Free PostgreSQL PGCES-02 Exam Practice Questions & Explanations

Last updated on: Oct 18, 2026
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