Your question: How do I select the first 3 characters in SQL?

How do I order last 3 characters in SQL?

SELECT `name` FROM `students` WHERE `marks` > 75 ORDER BY SUBSTR(`name`, -3), ID ASC; SUBSTR(name, -3) will select the last three characters in the name column of the student table.

How do I select 3 columns in SQL?

To select multiple columns from a table, simply separate the column names with commas! For example, this query selects two columns, name and birthdate , from the people table: SELECT name, birthdate FROM people; Sometimes, you may want to select all columns from a table.

How do I select the number of characters in SQL?

The SQL LENGTH function returns the number of characters in a string. The LENGTH function is available in every relational database systems. Some database systems use the LEN function that has the same effect as the LENGTH function.

How do I get the first three digits in SQL?

SQL Server SUBSTRING() Function

  1. Extract 3 characters from a string, starting in position 1: SELECT SUBSTRING(‘SQL Tutorial’, 1, 3) AS ExtractString;
  2. Extract 5 characters from the “CustomerName” column, starting in position 1: …
  3. Extract 100 characters from a string, starting in position 1:
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How do I get last 6 digits in SQL?

You can use the modulo operator to easily extract the last 6 digits assuming num is a numeric datatype: select num % 1000000 as num from db where user = ? This will accurately get the last 6 digits from the argument you pass.

How do I find a character in SQL?

SQL Server CHARINDEX() Function

The CHARINDEX() function searches for a substring in a string, and returns the position. If the substring is not found, this function returns 0. Note: This function performs a case-insensitive search.

How do I get the last character in SQL?

To get the first n characters of string with MySQL, use LEFT(). To get the last n char of string, the RIGHT() method is used in MySQL.

How do I select multiple rows in SQL?

SELECT * FROM users WHERE ( id IN (1,2,..,n) ); or, if you wish to limit to a list of records between id 20 and id 40, then you can easily write: SELECT * FROM users WHERE ( ( id >= 20 ) AND ( id How do I find unique rows in SQL?

SQL SELECT DISTINCT Explanation

SELECT DISTINCT returns only unique (i.e. distinct) values. SELECT DISTINCT eliminates duplicate values from the results. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc. DISTINCT operates on a single column.

How do you select in SQL?

SELECT Syntax

  1. SELECT column1, column2, … FROM table_name;
  2. SELECT * FROM table_name;
  3. Example. SELECT CustomerName, City FROM Customers;
  4. Example. SELECT * FROM Customers;

How do I find the longest name in SQL?

“how to find shortest and longest name in sql” Code Answer

  1. # IN the example below, “CITY” is the filed, “STATION” is the Table.
  2. (SELECT CITY, LENGTH(CITY)
  3. FROM STATION.
  4. ORDER BY LENGTH(CITY) ASC, CITY ASC LIMIT 1)
  5. UNION.
  6. (SELECT CITY, LENGTH(CITY)
  7. FROM STATION.
  8. ORDER BY.
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How do I get maximum length of a string in SQL?

Use the built-in functions for length and max on the description column: SELECT MAX(LEN(DESC)) FROM table_name; Note that if your table is very large, there can be performance issues.

How do I get the first record in SQL?

SQL TOP, LIMIT, FETCH FIRST or ROWNUM Clause

  1. SQL Server / MS Access Syntax: SELECT TOP number|percent column_name(s) FROM table_name. …
  2. MySQL Syntax: SELECT column_name(s) FROM table_name. …
  3. Oracle 12 Syntax: SELECT column_name(s) …
  4. Older Oracle Syntax: SELECT column_name(s) …
  5. Older Oracle Syntax (with ORDER BY): SELECT *
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