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Identify Column Data Types


Identify Column Data Types

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SQL_ME_RICH
SQL_ME_RICH
SSCarpal Tunnel
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Comments posted to this topic are about the item Identify Column Data Types
jonas.gunnarsson 52434
jonas.gunnarsson 52434
Old Hand
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My favorites to retrieve column information


-- Find nullable columns
select TABLE_NAME, COLUMN_NAME, DATA_TYPE from INFORMATION_SCHEMA.COLUMNS
where TABLE_NAME in (select name from sysobjects where type='U')
and IS_NULLABLE = 'YES'
and Left(TABLE_NAME, 3) NOT IN ('sys')
order by TABLE_NAME;

-- Find column with collation name set
select TABLE_NAME, COLUMN_NAME, DATA_TYPE, CHARACTER_SET_NAME, COLLATION_NAME from INFORMATION_SCHEMA.COLUMNS
where TABLE_NAME in (select name from sysobjects where type='U')
and ((CHARACTER_SET_NAME is not null) or (COLLATION_NAME is not null))
order by TABLE_NAME;

-- Find different datatypes
select DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, DATETIME_PRECISION, count(*) as "Count" from INFORMATION_SCHEMA.COLUMNS
where TABLE_NAME in (select name from sysobjects where type='U' and Left(name, 3) NOT IN ('sys'))
group by DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, DATETIME_PRECISION
order by DATA_TYPE;



/Jonas
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