Re: Update from another table where partial string exist in other table Sébastien F. May 27, 2022 04:42PM Re: Update from another table where partial string exist in other table Gideon Engelbrecht May 27, 2022 11:54PM Sorry, you can't reply to this topic. It has been closed. ...
UPDATEtable_nameSETcolumn1=value1,column2=value2,...WHEREcolumnNIN(SELECTcolumnMFROManother_tableWHEREcondition); 1. 2. 3. table_name:要更新的目标表的名称。 column1 = value1, column2 = value2, ...:要更新的列及其对应的新值。 columnN:用于匹配子查询结果的列名。 another_table:用于子查询的...
[MySQL UPDATE JOIN: Updating Data in One Table Based on Values from Another Table]( [MySQL INNER JOIN]( 开始 经验丰富的开发者->新手 步骤1 经验丰富的开发者->新手 步骤2 经验丰富的开发者->新手 步骤3 经验丰富的开发者->新手 步骤4 经验丰富的开发者->新手 结束 经验丰富的开发者-->新手 MySQL...
例如,UPDATE my_table SET column1 = (SELECT another_column FROM another_table WHERE condition) WHERE condition;。子查询可以返回单个值、多列值或多行值,具体取决于查询的需求。在使用子查询时,需要确保子查询返回的结果与要更新的列匹配,否则会引发错误。子查询的性能可能较低,特别是在处理大量数据时,因此...
MS Access SQL: Update Join Query with Sum from Another Table 、 我试图用另一个表"OrderDetails“中的"Quantity”字段来更新本例中名为"Products“的表的"Price”字段。我使用t作为临时表来存储来自OrderDetails的查询结果,然后内部连接这两个表(p和t)。我仍然出错。我验证了查询片段(SELECT……GROUP BY Pro...
好像只有在 mysql 中有此限制,解决方法就是不要在 update 的 where 语句中直接使用 select 子查询,再嵌套一层就可以了。。。 例如:update tablename set xx=0 where id in (select id from (select id from anothertable) as t)
INSERT INTO user (name) SELECT 1000 rows from another table ... # Bulk inserts SELECT ... Tx2: INSERT INTO user (name) VALUES ('赵四'); # Simple inserts SELECT ... 事务Tx1的第2条语句执行结束后,Tx2的第一条语句才可以拿到 AUTO-INC 锁 这样做的好处是可以保障 Tx1 的插入语句不管插入了...
mysql> SELECT CONCAT(last_name,', ',first_name) AS full_name FROM mytable ORDER BY full_name; You cannot use a column alias in aWHEREclause because the column value may not yet be determined when theWHEREclause is executed. SeeSection A.5.4. ...
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FROM sleutelwoorde t2 WHERE t2.produksleutelwoord LIKE CONCAT('%', t1.produk, '%')) However I get the following`error :Error Code: 1242. Subquery returns more than 1 row Regards Any ideas ? Sorry, you can't reply to this topic. It has been closed. ...