5
CREATE TABLE merge_table_streams_1 AS hits_100m_single
CREATE TABLE merge_table_streams_2 AS hits_100m_single
CREATE TABLE merge_table_streams_3 AS hits_100m_single
CREATE TABLE merge_table_streams_4 AS hits_100m_single
SELECT UserID FROM merge(default, '^(hits_100m_single|merge_table_streams_\\d)$') WHERE UserID = 12345678901234567890
DROP TABLE merge_table_streams_1
DROP TABLE merge_table_streams_2
DROP TABLE merge_table_streams_3
DROP TABLE merge_table_streams_4