SHOW TRANSACTION statement [YSQL]

Synopsis

Use the SHOW TRANSACTION ISOLATION LEVEL statement to show the current transaction isolation level.

Syntax

{{%ebnf%}} show_transaction {{%/ebnf%}}

Semantics

Supports Serializable, Snapshot, and Read Committed isolation using the PostgreSQL isolation level syntax of SERIALIZABLE, REPEATABLE READ, and READ COMMITTED respectively. PostgreSQL's READ UNCOMMITTED also maps to Read Committed isolation.

Read Committed isolation is supported only if the YB-TServer flag yb_enable_read_committed_isolation is set to true. By default this flag is false and the Read Committed isolation level of the YugabyteDB transactional layer falls back to the stricter Snapshot isolation (in which case Read Committed and Read Uncommitted of YSQL also in turn use Snapshot isolation).

TRANSACTION ISOLATION LEVEL

Show the current transaction isolation level.

The TRANSACTION ISOLATION LEVEL returned is either SERIALIZABLE, REPEATABLE READ, READ COMMITTED, or READ UNCOMMITTED.

See also

• SET TRANSACTION
• Transaction isolation levels