Required to convert Oracle query to DB2 Query

Any champ of query conversion can test his knowledge :) Below is the oracle query.
Please see the attachment for desired result.

SELECT cols.owner schema,
cols.table_name,
cols.column_name tableField,
cols.data_type dataType,
CASE WHEN cols.data_type = 'NUMBER' THEN cols.data_precision
ELSE data_length
END maxLength,
CASE
WHEN cols.data_type = 'NUMBER' THEN ''''||((cols.data_precision - cols.data_scale)||'''' ||','|| ''''||cols.data_scale||'''')
ELSE TO_CHAR(data_length)
END dataSize,
cols.NULLABLE allowNull,
cons.constraint_type isPrimaryKey
FROM all_tab_columns cols
LEFT OUTER JOIN (SELECT cons.table_name,cons.owner,cons.column_name, MIN(cons.constraint_type) constraint_type
FROM (SELECT cons.table_name,cons.owner,cons.column_name, con.constraint_type
FROM all_cons_columns cons
INNER JOIN all_constraints con ON cons.table_name = con.table_name AND cons.owner = con.owner
AND cons.constraint_name = con.constraint_name AND con.constraint_type IN ('P','R','U')
AND cons.table_name = '(TableName)' AND cons.owner = '(SchemaName)'
UNION
SELECT idxcols.table_name,idxcols.table_owner,idxcols.col umn_name,'U' constraint_type
FROM all_ind_columns idxcols
WHERE EXISTS (SELECT 1
FROM all_indexes idx
WHERE idx.table_name = idxcols.table_name AND idx.table_owner = idxcols.table_owner
AND idx.index_name = idxcols.index_name AND idx.uniqueness = 'UNIQUE'
AND idx.table_name = '(TableName)' AND idx.table_owner = '(SchemaName)'
)) cons
GROUP BY cons.table_name,cons.owner,cons.column_name) cons
ON cols.table_name = cons.table_name AND cols.owner = cons.owner AND cols.column_name = cons.column_name
WHERE cols.table_name = '(TableName)'
AND cols.owner = '(SchemaName)'
ORDER BY cols.column_id

Attached Images

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