sql-mode-informix-font-lock-keywords

sql-mode-informix-font-lock-keywords is a variable defined in `sql.el'.
Its value is

nil

• This variable may be risky if used as a file-local variable.

Documentation:
Informix SQL keywords used by font-lock.

This variable is used by `sql-mode' and `sql-interactive-mode'. The
regular expressions are created during compilation by calling the
function `regexp-opt'. Therefore, take a look at the source before
you define your own `sql-mode-informix-font-lock-keywords'.