从all_tab_cols中查找表和列信息

发布于 2024-08-22 18:48:12 字数 965 浏览 12 评论 0原文

我试图根据存储过程中包含的列来识别表类型。我最初提出的查询如下：


SELECT CASE WHEN col_one. IS NOT NULL THEN 'COL1'
                    WHEN col_two IS NOT NULL THEN 'COL2'
               ELSE 'NEITHER'
               END
        INTO ls_table_type
        FROM (SELECT column_name col_one
          FROM sys.all_tab_cols
          WHERE upper ( owner ) = upper ( '|OWNER|' )
            AND hidden_column = 'NO'
            AND virtual_column = 'NO'
            AND column_id IS NOT NULL
            AND column_name = '|COL1_NAME|'
            AND table_name = upper(|TABLE_NAME|))
          ,(SELECT column_name as col_two
          FROM sys.all_tab_cols
          WHERE upper ( owner ) = upper ( '|OWNER|' )
            AND hidden_column = 'NO'
            AND virtual_column = 'NO'
            AND column_id IS NOT NULL
            AND column_name = '|COL2_NAME|'
            AND table_name = upper(|TABLE_NAME|))

除非两列都存在于表中，否则该查询不起作用。我确信我错过了一些明显的攻击方法。

原文

I am trying to identify table types based on the columns they contain in a stored procedure. The query I initially came up with is as follows:


SELECT CASE WHEN col_one. IS NOT NULL THEN 'COL1'
                    WHEN col_two IS NOT NULL THEN 'COL2'
               ELSE 'NEITHER'
               END
        INTO ls_table_type
        FROM (SELECT column_name col_one
          FROM sys.all_tab_cols
          WHERE upper ( owner ) = upper ( '|OWNER|' )
            AND hidden_column = 'NO'
            AND virtual_column = 'NO'
            AND column_id IS NOT NULL
            AND column_name = '|COL1_NAME|'
            AND table_name = upper(|TABLE_NAME|))
          ,(SELECT column_name as col_two
          FROM sys.all_tab_cols
          WHERE upper ( owner ) = upper ( '|OWNER|' )
            AND hidden_column = 'NO'
            AND virtual_column = 'NO'
            AND column_id IS NOT NULL
            AND column_name = '|COL2_NAME|'
            AND table_name = upper(|TABLE_NAME|))

This does not work unless both columns are present in a table. I am sure I am missing some obvious way of attacking this.

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聆听风音 2024-08-29 18:48:12

此查询应该为您提供所需的信息。如果 col1 和 col2 不存在于同一个表中，那么您将不会获得任何重复记录。

select table_name, column_name
from all_tab_cols
where owner = '?'
  and column_name in ('col1', 'col2')
  and table_name = '?'; -- this line optional

This query should give you the information you need. If col1 and col2 don't exist in the same table then you won't get any duplicate records.

select table_name, column_name
from all_tab_cols
where owner = '?'
  and column_name in ('col1', 'col2')
  and table_name = '?'; -- this line optional

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微凉徒眸意 2024-08-29 18:48:12

你可以试试这个：

SELECT CASE WHEN EXISTS (SELECT column_name col_one
      FROM sys.all_tab_cols
      WHERE upper ( owner ) = upper ( '|OWNER|' )
        AND hidden_column = 'NO'
        AND virtual_column = 'NO'
        AND column_id IS NOT NULL
        AND column_name = '|COL1_NAME|'
        AND table_name = upper('|TABLE_NAME|'))
    THEN 'COL1'
    WHEN EXISTS (SELECT column_name as col_two
      FROM sys.all_tab_cols
      WHERE upper ( owner ) = upper ( '|OWNER|' )
        AND hidden_column = 'NO'
        AND virtual_column = 'NO'
        AND column_id IS NOT NULL
        AND column_name = '|COL2_NAME|'
        AND table_name = upper('|TABLE_NAME|'))
    THEN 'COL2'
    ELSE 'NEITHER'
    END
FROM DUAL;

You could try this:

SELECT CASE WHEN EXISTS (SELECT column_name col_one
      FROM sys.all_tab_cols
      WHERE upper ( owner ) = upper ( '|OWNER|' )
        AND hidden_column = 'NO'
        AND virtual_column = 'NO'
        AND column_id IS NOT NULL
        AND column_name = '|COL1_NAME|'
        AND table_name = upper('|TABLE_NAME|'))
    THEN 'COL1'
    WHEN EXISTS (SELECT column_name as col_two
      FROM sys.all_tab_cols
      WHERE upper ( owner ) = upper ( '|OWNER|' )
        AND hidden_column = 'NO'
        AND virtual_column = 'NO'
        AND column_id IS NOT NULL
        AND column_name = '|COL2_NAME|'
        AND table_name = upper('|TABLE_NAME|'))
    THEN 'COL2'
    ELSE 'NEITHER'
    END
FROM DUAL;

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