Does Big Query support operations like "REPLACE INSERT" or something related to that?
像“替换插入”之类的大型查询支持操作是否与此相关?
If I run a query like this twice:
如果我像这样运行两次查询:
INSERT INTO table(column1) VALUES(1)
It'll create a duplicated row, is it possible to insert a row only if a column with the same value does not exist?
它将创建一个重复的行，仅当具有相同值的列不存在时才可以插入行吗?
Thanks!
谢谢!
2 个解决方案
#1
4
Below should make it
下面应该做它
#standardSQL
INSERT INTO yourTable(column1)
SELECT value FROM (SELECT 1 AS value)
LEFT JOIN yourTable
ON column1 = value
WHERE column1 IS NULL
#2
2
Does this work for you?
这个对你有用吗?
INSERT INTO table(column1)
WITH s AS (SELECT 1 src)
SELECT src FROM s WHERE NOT EXISTS (
SELECT * FROM table t WHERE t.column1 = s.src
)
#1
4
Below should make it
下面应该做它
#standardSQL
INSERT INTO yourTable(column1)
SELECT value FROM (SELECT 1 AS value)
LEFT JOIN yourTable
ON column1 = value
WHERE column1 IS NULL
#2
2
Does this work for you?
这个对你有用吗?
INSERT INTO table(column1)
WITH s AS (SELECT 1 src)
SELECT src FROM s WHERE NOT EXISTS (
SELECT * FROM table t WHERE t.column1 = s.src
)