sql中自己创建了一个函数,如何判断该函数已经存在,如果存在删除,类似于如下语句
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[name]') AND type in (N'P', N'PC'))
DROP PROCEDURE [name]
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[name]') AND type in (N'P', N'PC'))
DROP PROCEDURE [name]
type
char(2)
对象类型:
AF = 聚合函数 (CLR)
C = CHECK 约束
D = DEFAULT(约束或独立)
F = FOREIGN KEY 约束
FN = SQL 标量函数
FS = 程序集 (CLR) 标量函数
FT = 程序集 (CLR) 表值函数
IF = SQL 内联表值函数
IT = 内部表
P = SQL 存储过程
PC = 程序集 (CLR) 存储过程
PG = 计划指南
PK = PRIMARY KEY 约束
R = 规则(旧式,独立)
RF = 复制筛选过程
S = 系统基表
SN = 同义词
SQ = 服务队列
TA = 程序集 (CLR) DML 触发器
TF = SQL 表值函数
TR = SQL DML 触发器
TT = 表类型
U = 表(用户定义类型)
UQ = UNIQUE 约束
V = 视图
X = 扩展存储过程
USE <database_name>;
GO
SELECT name AS object_name
,SCHEMA_NAME(schema_id) AS schema_name
,type_desc
,create_date
,modify_date
FROM sys.objects
WHERE modify_date > GETDATE() - <n_days>
ORDER BY modify_date;
GO
B. 返回指定存储过程或函数的参数运行以下查询之前,请使用有效名称替换 <database_name> 和 <schema_name.object_name>。Transact-SQL
USE <database_name>;
GO
SELECT SCHEMA_NAME(schema_id) AS schema_name
,o.name AS object_name
,o.type_desc
,p.parameter_id
,p.name AS parameter_name
,TYPE_NAME(p.user_type_id) AS parameter_type
,p.max_length
,p.precision
,p.scale
,p.is_output
FROM sys.objects AS o
INNER JOIN sys.parameters AS p ON o.object_id = p.object_id
WHERE o.object_id = OBJECT_ID('<schema_name.object_name>')
ORDER BY schema_name, object_name, p.parameter_id;
GO
C. 返回数据库中的所有用户定义函数运行以下查询之前,请使用有效数据库名称替换 <database_name>。Transact-SQL
USE <database_name>;
GO
SELECT name AS function_name
,SCHEMA_NAME(schema_id) AS schema_name
,type_desc
,create_date
,modify_date
FROM sys.objects
WHERE type_desc LIKE '%FUNCTION%';
GO
D. 返回架构中每个对象的所有者。运行以下查询之前,请使用有效名称替换所有的 <database_name> 和 <schema_name>。Transact-SQL
USE <database_name>;
GO
SELECT 'OBJECT' AS entity_type
,USER_NAME(OBJECTPROPERTY(object_id, 'OwnerId')) AS owner_name
,name
FROM sys.objects WHERE SCHEMA_NAME(schema_id) = '<schema_name>'
UNION
SELECT 'TYPE' AS entity_type
,USER_NAME(TYPEPROPERTY(SCHEMA_NAME(schema_id) + '.' + name, 'OwnerId')) AS owner_name
,name
FROM sys.types WHERE SCHEMA_NAME(schema_id) = '<schema_name>'
UNION
SELECT 'XML SCHEMA COLLECTION' AS entity_type
,COALESCE(USER_NAME(xsc.principal_id),USER_NAME(s.principal_id)) AS owner_name
,xsc.name
FROM sys.xml_schema_collections AS xsc JOIN sys.schemas AS s
ON s.schema_id = xsc.schema_id
WHERE s.name = '<schema_name>';
GO