Question

我想在oracle db中创建一个大写所有列名称的函数。我不是每天都使用oracle，所以我需要帮助。

我想这样，但是对于Oracle：

CREATE OR REPLACE FUNCTION uppercase_fields(schemaname text) RETURNS void AS $$
DECLARE
  r RECORD;
  full_table text;
  geom_type_count integer;
BEGIN
  FOR r IN
    EXECUTE 'SELECT table_name, table_schema, column_name FROM information_schema.columns WHERE table_schema = $1 AND column_name <> upper(column_name)'
      USING schemaname
  LOOP
    EXECUTE 'ALTER TABLE "' || r.table_schema || '"."' || r.table_name || '" RENAME "' || r.column_name || '" to "' || upper(r.column_name) || '"';
  END LOOP;
END;
$$ LANGUAGE plpgsql;

由于

Answer 1

Oracle作为默认功能，将所有未引用的表/列标识符转换为大写 - 因此您不需要使用UPPER函数;只是将标识符保留为不加引号。

要查找所需数据，您需要数据字典中的ALL_TAB_COLUMNS或USER_TAB_COLUMNS表：

BEGIN
  FOR r IN ( SELECT owner, table_name, column_name
             FROM   ALL_TAB_COLUMNS
             WHERE  owner IN ( 'your', 'list' , 'of', 'tablespaces' )
             AND    column_name <> UPPER( column_name )
           )
  LOOP
    EXECUTE 'ALTER TABLE "' || r.owner || '"."' || r.table_name
            || '" RENAME COLUMN "' || r.column_name || '" TO ' || r.column_name;
  END LOOP;
END;
/

Answer 2

要更改Oracle中所有列名称的大写形式，请使用以下解决方案：

<activity
        android:name=".activity.MainActivity"
        android:configChanges="layoutDirection|keyboardHidden|orientation|screenSize"
        android:label="@string/app_name"></activity>

只需用DECLARE TARGET_TABLE_NAME VARCHAR2(31) := 'ENTER_YOUR_TARGET_TABLE_NAME_HERE'; BEGIN FOR I IN ( SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS WHERE TABLE_NAME = TARGET_TABLE_NAME AND COLUMN_NAME <> UPPER(COLUMN_NAME) ) LOOP EXECUTE IMMEDIATE 'ALTER TABLE ' || TARGET_TABLE_NAME || ' RENAME COLUMN "' || I.COLUMN_NAME || '" TO ' || UPPER(I.COLUMN_NAME); END LOOP; END; /替换目标表的名称

Oracle如何将列名称

2 个答案: