DELETE

Removes one or more rows from a table.

备注

Databend guarantees data integrity. In Databend, Insert, Update, and Delete operations are guaranteed to be atomic, which means that all data in the operation must succeed or all must fail.

Syntax

DELETE FROM <table_name>
[WHERE <condition>]

提示

The DELETE statement does not support the USING clause yet.

Examples

-- create a table
CREATE TABLE bookstore (
  book_id INT,
  book_name VARCHAR
);

-- insert values
INSERT INTO bookstore VALUES (101, 'After the death of Don Juan');
INSERT INTO bookstore VALUES (102, 'Grown ups');
INSERT INTO bookstore VALUES (103, 'The long answer');
INSERT INTO bookstore VALUES (104, 'Wartime friends');
INSERT INTO bookstore VALUES (105, 'Deconstructed');

-- show the table before deletion
SELECT * FROM bookstore;

101|After the death of Don Juan
102|Grown ups
103|The long answer
104|Wartime friends
105|Deconstructed

-- delete a book (Id: 103)
DELETE FROM bookstore WHERE book_id = 103;

-- show the table again after deletion
SELECT * FROM bookstore;

101|After the death of Don Juan
102|Grown ups
104|Wartime friends
105|Deconstructed