It can be tricky sometimes to display Unicode characters in Oracle SQL Developer. For most Unicode characters, the UNISTR function will do the trick: UNISTR('25CF') will display ●, UNISTR('2192')will display → and UNISTR('2020')will display †. To see the display, you can execute select UNISTR('2020') from dual; to display †. However, some Unicode characters in higher code […]