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Trim Leading Zeroes
From Wiki
One of the top asked question in SQL Server forums is how to strip leading zeroes from a character field.
The Ten Most Asked SQL Server Questions And Their Answers blog has this question (9) answered. I want to present a different answer.
The code below demonstrates the use of PATINDEX function to search for first non-0 character in a field.
- DECLARE @t TABLE(
- ColZeroes VARCHAR(30)
- )
- INSERT INTO @t
- SELECT '0000123456_PF_20110531_P_F'
- UNION ALL
- SELECT '0001234567_PF_20110531_P_F'
- UNION ALL
- SELECT 'This does not have'
- SELECT ColZeroes,
- CASE
- WHEN PATINDEX('%[^0]%',ColZeroes) > 0 THEN SUBSTRING(ColZeroes,PATINDEX('%[^0]%',ColZeroes),LEN(ColZeroes))
- ELSE ColZeroes
- END
- FROM @t
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