VLOOKUP等效于MySQL

Question

我有2个表：with sc1 as ( select owner, object_name, last_ddl_time from all_objects where object_type = 'VIEW' and owner = 'SC1'), sc2 as ( select owner, object_name, last_ddl_time from all_objects where object_type = 'VIEW' and owner = 'SC2') select sc1.object_name, sc1.last_ddl_time from sc1 inner join sc2 on (sc1.object_name = sc.object_name) where sc1.last_ddl_time > sc2.last_ddl_time; 包含客户端处理数据，operations包含年龄数据。我想创建新表customers并在vlookup到Age添加新列customers，但它不起作用：

operations

Answer 1

您有一些基本的语法错误。没有FROM子句来指定第一个表，并且INNER JOIN必须后跟您要加入的表，而不是列。

你说你希望新表名为vlookup，但你创建的是total。

CREATE TABLE new_schema.vlookup AS (
    SELECT o.id_check, o.id_client, c.age
    FROM new_schema.operations AS o
    INNER JOIN new_schema.customers AS c ON o.id_client = c.id_client
);