Hướng dẫn mysql update multiple rows
You have a table students with And here is the new table of data that you want to update to: There are a couple of ways to do it. 1. You can either write multiple UPDATE queries like this and run them all at once: 2. Or you can UPDATE with JOIN statement:
3. Or you can use
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I have seen some questions about table to table, so i suppose the next question would be. Am i going to be forced to create a tempTable with an ID column and MailDate column and Inner Join it with the actual table I want to update? Is there way to do this update that doesnt require me have to make my WHERE statement so huge or the whole creating a tempTable way? Any help would be greatly appreciated. Edit: Just adding this, so people have a better understanding why I choose the answer I did. I get the primary keys through a user selecting rows from a access form datasheet. So the update could be updating anywhere from 1 row to 500 rows(doubt it get that high though, but if it does. Looks like i am stuck creating the temp table). Therfore, I will have a vba string collection of
all those ID's which looks like I will need to loop through to create my 13.2.6 INSERT Statement
For additional information about In MySQL 8.0, the Inserting into a table requires the When inserting into a partitioned table, you can control which partitions and subpartitions accept new rows. The
Column values can be given in several ways:
Each values list must contain exactly as many values as are to be inserted per row. The following statement is invalid because it contains one list of nine values, rather than three lists of three values each:
The affected-rows value for an
If you use
If you are using the C API, the information string can be obtained by invoking the
The
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