HISTSIZE

Specifies how much storage space is allocated to store the history of SQL statements issued in the current vsql session. vsql uses this setting, by default 500, to calculate the size of the history buffer:

HISTSIZE * 50 (bytes)

where 50 bytes approximates the average length of a SQL statement. The actual length of SQL statements in the current session determines how many statements vsql stores.

HISTSIZE has no effect on the history that is stored in .vsql_history.

Source: Bash