Can't execute query

SELECT * FROM edge040823093932��_email WHERE eid = 'PPPA5R3H'

MySQL Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '¿½ï¿½_email WHERE eid = 'PPPA5R3H'' at line 1

Can't execute query

SELECT id,url FROM mail_links WHERE tid =  and section = 'html' ORDER BY length( url ) DESC

MySQL Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and section = 'html' ORDER BY length( url ) DESC' at line 1

Can't execute query

SELECT name,content,type,iid FROM mail_section INNER JOIN mail_instance ON mail_section.sid = mail_instance.sid WHERE mail_section.tid = 

MySQL Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1