SQL> CREATE TABLE "MyTable"("myColumn" NUMBER,"mycolumn" VARCHAR2(10));

Table created.

SQL> INSERT INTO "MyTable" ("myColumn","mycolumn") VALUES (1,'col');

1 row created.

SQL> SELECT "mycolumn" from "MyTable";

mycolumn
----------
col

SQL> SELECT "myColumn" from "MyTable";

  myColumn
----------
         1

SQL> SELECT * FROM mytable;
SELECT * FROM mytable
              *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL> SELECT * FROM MyTable;
SELECT * FROM MyTable
              *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL> SELECT * FROM "mytable";
SELECT * FROM "mytable"
              *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL> SELECT * FROM "MyTable";

  myColumn mycolumn
---------- ----------
         1 col