Question

我需要更新包含它的所有表中的id_ciudad列，可能使用脚本。此外，该脚本将在几个大型数据库中执行。问题是，某些表对于所有数据库都不相同，但它们确实（当然）确实存在这一列。

在互联网上查看我可以构建这个脚本，但它不起作用。使用此脚本，我获取所有带有id_ciudad的表并迭代它，但我收到此错误

列名'id_ciudad'无效

有没有人可以帮助我？：d

DECLARE @tabsConCiudad AS TABLE (id_table int, table_name VARCHAR(75) )
DECLARE @id_table as int
DECLARE @table_name as VARCHAR(75)

-- It obtain correctly the tables with id_ciudad column
INSERT INTO @tabsConCiudad (id_table, table_name)   
    SELECT object_id, name
    FROM sys.tables 
    WHERE object_id IN (SELECT object_id
                        FROM sys.columns
                        WHERE name LIKE 'id_ciudad')

DECLARE _CURSOR CURSOR 
LOCAL STATIC READ_ONLY FORWARD_ONLY FOR 
        SELECT id_table
        FROM @tabsConCiudad

OPEN _CURSOR

--It iterate the obtained tables correctly
FETCH NEXT FROM _CURSOR INTO @id_table

WHILE @@FETCH_STATUS = 0
BEGIN 
    --This part is the bad part, in the update
    UPDATE tab
    SET tab.[id_ciudad] = ciudades.id_ciudad
    FROM [sys].[dm_db_index_operational_stats]( Null, @id_table, Null, Null ) tab, [cw_core].[ciudades] ciudades
    WHERE tab.[id_ciudad] = ciudades.old_id_HO

    FETCH NEXT FROM _CURSOR INTO @id_table
END

CLOSE _CURSOR
DEALLOCATE _CURSOR

Answer 1

OP解决方案。

要解决此问题，请将EXECUTE与要执行的查询字符串一起使用。换句话说，更新包含名为"city_id"的列的表的值。

DECLARE @ciudadDefecto as int

DECLARE @tabsConCiudad AS TABLE (id_table int, table_name VARCHAR(75) )
DECLARE @table_name as VARCHAR(75)
DECLARE @table_complete_name as VARCHAR(175)
DECLARE @queryString as VARCHAR(1000)

insert into @tabsConCiudad (id_table, table_name)   
    select object_id, name
    from sys.tables 
    where object_id in 
        (select object_id
        from sys.columns
        where name like 'id_ciudad_registro')

DECLARE _CURSOR CURSOR LOCAL STATIC READ_ONLY FORWARD_ONLY
FOR SELECT table_name FROM @tabsConCiudad

OPEN _CURSOR
FETCH NEXT FROM _CURSOR INTO @table_name
WHILE @@FETCH_STATUS = 0 BEGIN 

    Set @table_complete_name =  CONCAT ( '[cw_core].[',  @table_name, ']')
        print CONCAT('Ejecutando: actualizacion a tabla ', @table_complete_name)
    set @queryString =  CONCAT ( 'Update tab ', '')
    set @queryString =  CONCAT ( @queryString, ' set tab.id_ciudad_registro = ciudades.id_ciudad  ')
    set @queryString =  CONCAT ( @queryString, ' from ', @table_complete_name, ' tab,  [cw_core].[ciudades] ciudades ' )
    set @queryString =  CONCAT ( @queryString, ' where tab.id_ciudad_registro = ciudades.old_id_HO' )
    EXECUTE(@queryString)

    FETCH NEXT FROM _CURSOR INTO @table_name
END
CLOSE _CURSOR DEALLOCATE _CURSOR

如何更新具有特定列名称的表中的行

1 个答案: