Common questions

How do I count characters in a string in SQL Server?

How do I count characters in a string in SQL Server?

SQL Server: Count Number of Occurrences of a Character or Word in a String

  1. DECLARE @tosearch VARCHAR(MAX)=’In’
  2. SELECT (DATALENGTH(@string)-DATALENGTH(REPLACE(@string,@tosearch,”)))/DATALENGTH(@tosearch)
  3. AS OccurrenceCount.

How do I count the number of characters in SQL?

You can find the number of characters using system function LEN . i.e. Use the LEN function: Returns the number of characters of the specified string expression, excluding trailing blanks.

How do I count the number of commas in a string in SQL?

SQL Pattern: How can I count the number of comma separated values in a string? Basically, you replace all occurrences of , with an empty string “” , then subtract its LENGTH from the LENGTH of the unadulterated string, which gives you the number of , characters.

How do I count repeated words in SQL?

How to Find Duplicate Values in SQL

  1. Using the GROUP BY clause to group all rows by the target column(s) – i.e. the column(s) you want to check for duplicate values on.
  2. Using the COUNT function in the HAVING clause to check if any of the groups have more than 1 entry; those would be the duplicate values.

How do I find the fifth highest salary in SQL?

How to find Nth highest salary from a table

  1. Consider the following table:
  2. Query :
  3. Output :
  4. DENSE_RANK :
  5. Alternate Solution :
  6. Alternate Solution –
  7. Query: SELECT * FROM Employee WHERE sal = ( SELECT MIN(sal) FROM Employee WHERE sal IN ( SELECT DISTINCT TOP N sal FROM Employee ORDER BY sal DESC ) )
  8. Another Solution –

How do I avoid duplicates in SQL?

The go to solution for removing duplicate rows from your result sets is to include the distinct keyword in your select statement. It tells the query engine to remove duplicates to produce a result set in which every row is unique. The group by clause can also be used to remove duplicates.

How do I find the longest city name in SQL?

  1. if we choose Oracle , then this query does not work in hacker rank.
  2. This query is for MS SQL Server and won’t work with oracle.
  3. For MySql: SELECT CITY, LENGTH(CITY) as LEN FROM STATION ORDER BY LEN ASC, CITY ASC LIMIT 1; SELECT CITY, LENGTH(CITY) as LEN FROM STATION ORDER BY LEN DESC, CITY ASC LIMIT 1;

How to count number of characters in a string?

;

  • totChar=0;
  • The user asked to enter a string to count character
  • A do-while loop is used to count total characters of the given string.
  • How do you replace a character in SQL?

    A positional replacement could be performed by creating a complex SQL statement that split a string into the appropriate pieces with SUBSTR , omitting the character(s) to be replaced, and inserting the replacement characters with CONCAT.

    How do you find a string in SQL?

    How to Find a String within a String in SQL Server. In SQL Server, you can use the T-SQL CHARINDEX() function or the PATINDEX() function to find a string within another string.

    How do you find the length of a string in SQL?

    Well, you can use the LEN() function to find the length of a String value in SQL Server, for example, LEN(emp_name) will give you the length of values stored in the column emp_name.