SQLite’s DISTINCT Keywords vs.
SELECT
Statement to eliminate all duplicate records and get only one record.
It is possible to have multiple duplicate records in a table. When extracting such a record, the Used to eliminate duplicate records Hypothetical First, let’s take a look at the following This will produce the following results: Now, let’s look at the above This will produce the following results without any duplicate entries:
DISTINCT
keyword is particularly meaningful, which only gets the only record, not the duplicate record. 1.26.1. Grammar ¶
DISTINCT
The basic syntax for keywords is as follows:SELECT DISTINCT column1, column2,.....columnN
FROM table_name
WHERE [condition]
1.26.2. Example ¶
COMPANY
The table has the following records:ID NAME AGE ADDRESS SALARY
---------- ---------- ---------- ---------- ----------
1 Paul 32 California 20000.0
2 Allen 25 Texas 15000.0
3 Teddy 23 Norway 20000.0
4 Mark 25 Rich-Mond 65000.0
5 David 27 Texas 85000.0
6 Kim 22 South-Hall 45000.0
7 James 24 Houston 10000.0
8 Paul 24 Houston 20000.0
9 James 44 Norway 5000.0
10 James 45 Texas 5000.0
SELECT
Query, which returns duplicate payroll records:sqlite> SELECT name FROM COMPANY;
NAME
----------
Paul
Allen
Teddy
Mark
David
Kim
James
Paul
James
James
SELECT
Used in query DISTINCT Keywords:sqlite> SELECT DISTINCT name FROM COMPANY;
NAME
----------
Paul
Allen
Teddy
Mark
David
Kim
James