储藏室

SELECT '''' || REPLACE('293,228,255,983,228'                      ,','                      ,''',''') || ''''  FROM DUAL

Using the & Substitution VariableUse a variable prefixed with an ampersand (&) toprompt the user for a value.SELECT employee_id, last_name, salary, department_idFROM employeesWHERE employee_

查找所有重复标题的记录：SELECT *FROM t_info aWHERE ((SELECT COUNT(*)FROM t_infoWHERE Title = a.Title) > 1)ORDER BY Title DESC一。查找重复记录1。查找全部重复记录Select * From 表 Where 重复字段 In (Select 重复字段

--1.  SQL> SELECT TO_CHAR(TRUNC(SYSDATE) + 0.99999  2                ,'yyyymmdd hh24:mi:ss')  3    FROM DUAL  4  / TO_CHAR(TRUNC(SYSDATE)+0.99999------------------------------20111115