DB2:如何查找表或表列表中是否存在列？

Question

我正在使用DB2数据库.什么是合适的SQL查询来查明表或表列表中是否存在列？

例如

if "column_name" is found in "table name" or [list of table names]

return true or the name of tables that have that column.

非常感谢.

Answer 1

在DB2 z/OS 9.1和LUW 9.7上测试:

SELECT STRIP(TBCREATOR) || '.' || STRIP(TBNAME)
FROM SYSIBM.SYSCOLUMNS 
WHERE NAME = 'your_col'
  AND TBNAME IN ('list', 'of', 'tables')

如果您只想要特定模式的结果,则可以添加AND TBCREATOR = 'your_schema'到查询的末尾.

Answer 2

SELECT TABNAME
FROM SYSCAT.COLUMNS
WHERE 
    TABNAME IN ('table name 1', 'table name 2') AND 
    COLNAME = 'column_name';