sql - 一時テーブルを使用した拡張プロパティの一括更新

Question

拡張プロパティの更新を半自動化する必要があり、正しいか間違っているかを問わず、一時テーブルにすべてのデータを入力し、値が既に存在するかどうかを確認するときに何らかの方法で一時テーブルに参加することを計画していました。次に、一時テーブルの各行を反復処理し、値が存在する場合は関数 sp_updateextendedproperty を呼び出し、関数 sp_addextendedproperty を呼び出さない場合は呼び出します。以下は私の出発点です。これを機能させるにはどうすればよいですか?

DECLARE @Table TABLE (id int IDENTITY(1,1),TableName SYSNAME, ColumnName varchar(200), ColumnDescription varchar(200))

INSERT INTO @Table VALUES('MyTable', 'Col1', 'Col1 description')
INSERT INTO @Table VALUES('MyTable', 'Col2', 'Col2 description')

IF EXISTS 
(select 
    sc.name,
    sep.value
from sys.tables st
inner join sys.columns sc on st.object_id = sc.object_id
left join sys.extended_properties sep on st.object_id = sep.major_id
                                 and sc.column_id = sep.minor_id
                                 and sep.name = 'MS_Description'
where st.name = @Table.TableName and sc.name = @Table.ColumnName and sep.value is not null)

EXEC sp_updateextendedproperty 
@name = N'MS_Description', @value = @Table.ColumnDescription,
@level0type = N'Schema', @level0name = 'dbo', 
@level1type = N'Table',  @level1name = @Table.TableName, 
@level2type = N'Column', @level2name = @Table.ColumnName

ELSE

EXEC sp_addextendedproperty 
@name = N'MS_Description', @value = @Table.ColumnDescription,
@level0type = N'Schema', @level0name = 'dbo',
@level1type = N'Table', @level1name = @Table.TableName, 
@level2type = N'Column', @level2name = @Table.ColumnName

新しいスクリプト

CREATE TABLE updateTable (TableName SYSNAME, ColumnName varchar(100), ColumnDescription varchar(100))

INSERT INTO updateTable VALUES('tblHAEMATOLOGY_MDT', 'MDT_ID', 'row1 test run')
INSERT INTO updateTable VALUES('tblHAEMATOLOGY_MDT', 'MEETING_ID', 'row2 test run')

DECLARE @TableName SYSNAME, @ColumnName varchar(100), @ColumnDescription varchar(100)
DECLARE @UpdateCursor CURSOR

SET @UpdateCursor = CURSOR FOR
SELECT TableName, ColumnName, ColumnDescription FROM updateTable

OPEN @UpdateCursor

FETCH NEXT FROM @UpdateCursor INTO @TableName, @ColumnName, @ColumnDescription

WHILE @@FETCH_STATUS = 0
BEGIN

IF EXISTS 
(select 
    sc.name,
    sep.value
from sys.tables st
inner join sys.columns sc on st.object_id = sc.object_id
left join sys.extended_properties sep on st.object_id = sep.major_id
                                 and sc.column_id = sep.minor_id
                                 and sep.name = 'MS_Description'
left join updateTable on st.name = @TableName and sc.name = @ColumnName
where sep.value is not null)

BEGIN

EXEC sp_updateextendedproperty 
@name = N'MS_Description', @value = @ColumnDescription,
@level0type = N'Schema', @level0name = 'dbo', 
@level1type = N'Table',  @level1name = @TableName, 
@level2type = N'Column', @level2name = @ColumnName

FETCH NEXT FROM @UpdateCursor INTO @TableName, @ColumnName, @ColumnDescription

END

ELSE

BEGIN

EXEC sp_addextendedproperty 
    @name = N'MS_Description', @value = @ColumnDescription,
    @level0type = N'Schema', @level0name = 'dbo',
    @level1type = N'Table', @level1name = @TableName, 
    @level2type = N'Column', @level2name = @ColumnName

FETCH NEXT FROM @UpdateCursor INTO @TableName, @ColumnName, @ColumnDescription

END

END

CLOSE @UpdateCursor
DEALLOCATE @UpdateCursor