Hi. not sure this is the expected result. /home/jian/postgres/pg16_test/bin/psql -d test_dev -p 5455 -c "select $$hello$$" 2023-07-04 20:15:51.066 CST [1562050] ERROR: trailing junk after numeric literal at or near "884070h" at character 8 2023-07-04 20:15:51.066 CST [1562050] STATEMENT: select 884070hello884070 ERROR: trailing junk after numeric literal at or near "884070h" LINE 1: select 884070hello884070 ^