DB2 的动态 SQL

Question

下面的 SQL 查询不会将列提取到 v_columns 中。当我打印 v_columns 时它总是 NULL

SET v_sql = 'SELECT LISTAGG(COLNAME , '','') WITHIN GROUP (ORDER BY COLNO) INTO :v_columns ' || 'FROM SYSCAT.COLUMNS ' || 'WHERE TABNAME = ''' || v_tableName || ''' AND COLNAME <> ''TOWID''';

Answer 1

区分大小写。

尝试：

SET v_sql = 'SELECT LISTAGG(COLNAME , '','') WITHIN GROUP (ORDER BY COLNO) INTO :v_columns ' || 'FROM SYSCAT.COLUMNS ' || 'WHERE UPPER(TABNAME) = UPPER(''' || v_tableName || ''') AND COLNAME <> ''TOWID''';