如果不存在则插入

Question

如果表中不存在行，我想插入行。

类似的东西：

WHEN NOT EXISTS (SELECT * FROM Students) THEN
INSERT INTO Students (name) VALUES ("Foo Bar"), ("Bar Foo")

但这会导致Error: SQLITE_ERROR: near "WHEN": syntax error

Answer 1

您可以使用：

INSERT INTO Students (name) 
SELECT * FROM (VALUES ("Foo Bar"), ("Bar Foo"))
WHERE NOT EXISTS(SELECT * FROM Students);

db<>fiddle demo