This is personal study note Copyright and original reference: https://www.youtube.com/watch?v=R5jo7vOOCAE&list=PLVsNizTWUw7HhYtI-4GGmlJ5yxNdwNI_X ================================================================================ ================================================================================ ================================================================================ ================================================================================ ================================================================================ 1. Select right database And all SQL queries are passed to selected database Click lightening icon or ctrl shift enter * means all fields SELECT field_name FROM table_name; ================================================================================ where condition clause SELECT * FROM memberTBL WHERE memberName="지운이"; ================================================================================ Create table and its name has whitespace ================================================================================