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How do I select the row of a column such that the row size is <= 5 ? Is there a query for this which will work on most/all databases ?
eg. id, first_name
Select only those people whose firstname is more than 10 characters. Their name is too long ?
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Select one or more rows and columns Or click on any cell in the column and then press Ctrl + Space. Select the row number to select the entire row. Or click on any cell in the row and then press Shift + Space. To select non-adjacent rows or columns, hold Ctrl and select the row or column numbers.
LEN() function calculates the number of characters of an input string, excluding the trailing spaces. It is an expression that can be a constant, variable, or column of either character or binary data. Returns : It returns the number of characters of an input string, excluding the trailing spaces.
If you are bound to use a specific RDBMS then the solution is easy.
Use the LENGTH function.
Depending upon your database the length function can be LEN, Length, CarLength. Just search google for it.
According to your question
How do I select the row of a column such that the row size is <= 5 ? Is there a query for this which will work on most/all databases ?
solution can be
SELECT * FROM TableName WHERE LENGTH(name) <= 5
If you want something that can work with almost all the database and I assume that the length of your string that you want to fetch is of a significant small length. Example 5 or 8 characters then you can use something like this
SELECT *
FROM tab
WHERE
colName LIKE ''
OR colName LIKE '_'
OR colName LIKE '__'
OR colName LIKE '___'
OR colName LIKE '____'
OR colName LIKE '_____'
This works with almost all major DBMS.
see example:
SQL Server
MySQL
Oracle
Postgre SQL
SQLite
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