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SQL Query help

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Topic

IK1972

56 Posts

Posted - 2014-06-06 : 19:37:46

Hi,

I have one big database I want to check for all numeric data type columns I want to check what is min or max value in table. reason to check this is I want to confirm data type is correct like if for any bigint column I have max value 500 then it means datatype for this column is not correct so I will update later.

for below query I just want to get Min and Max value for that column.

select c.TABLE_CATALOG, c.TABLE_SCHEMA, c.TABLE_NAME, c.COLUMN_NAME, c.IS_NULLABLE, c.DATA_TYPE
from INFORMATION_SCHEMA.COLUMNS c
where c.DATA_TYPE in ('int', 'bigint','money','decimal','float','numeric','real','smallint','smallmoney','tinyint')
and c.TABLE_SCHEMA not in ('dbo')
order by c.TABLE_SCHEMA

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2014-06-06 : 20:10:37

Performance is going to suck for the large tables unless the columns are indexed.

Copy/paste/execute:
select 'select min(' + COLUMN_NAME + '), max(' + COLUMN_NAME + ') from ' + TABLE_SCHEMA + '.' + TABLE_NAME
from INFORMATION_SCHEMA.COLUMNS
where DATA_TYPE in ('int', 'bigint','money','decimal','float','numeric','real','smallint','smallmoney','tinyint')
order by TABLE_SCHEMA

Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/

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