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dbsee_tablepidatatype.sql
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dbsee_tablepidatatype.sql
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/*********************************************************************/
/* Author : VLDB */
/* Date : 16/03/2017 */
/* Version : 1 */
/* Description : Generate report on primary index (PI) datatypes */
/*********************************************************************/
select t1.columnname as column_name
,t1.columntype as column_type
,case when t1.columntype = 'I' then 'integer'
when t1.columntype = 'F' then 'float'
when t1.columntype = 'D' then 'decimal'
when t1.columntype = 'CF' then 'char'
when t1.columntype = 'CV' then 'varchar'
when t1.columntype = 'BF' then 'binary'
when t1.columntype = 'BV' then 'varbinary'
when t1.columntype = 'TS' then 'timestamp'
when t1.columntype = 'I8' then 'bigint'
when t1.columntype = 'I2' then 'smallint'
when t1.columntype = 'I1' then 'byteint'
when t1.columntype = 'DA' then 'date'
else 'recheck'
end as data_type
,count(t2.columnname) as index_column_freq
,sum(t3.table_size) as total_perm
from dbc.columnsv t1
inner join
dbc.indicesv t2
on t1.databasename = t2.databasename
and t1.tablename = t2.tablename
and t1.columnname = t2.columnname
left join
(select databasename
,tablename
,sum(currentperm) as table_size
from dbc.tablesizev
group by 1,2) t3 -- table size
on t2.databasename = t3.databasename
and t2.tablename = t3.tablename
inner join
(select dr1.columnname
,count(distinct(dr1.columntype)) as number_different
from dbc.columnsv dr1
inner join
dbc.indicesv dr2
on dr1.databasename = dr2.databasename
and dr1.tablename = dr2.tablename
and dr1.columnname = dr2.columnname
where dr2.indexnumber = 1 -- denotes primary index
group by 1
having number_different > 1 ) t4 -- filter to remove PI columns that only have 1 datatype
on t1.columnname = t4.columnname
where t2.indexnumber = 1
group by 1,2,3
;