MySQL SubQuery

MySQL SubQuery

I was trying to do a sub-query here but it wouldn't work (Syntax Error) in MySQL for some reason even though based on the SQL standards it should be ok.

[i:1268bfa39e][b:1268bfa39e]I found the reason this doesn't work. I am using MySQL 3.23 and I read on the MySQL web site that versions before 4.1 DO NOT SUPPORT SUB-QUERIES so it showed me how to rewrite the following as a LEFT join instead of a sub-query.
[/b:1268bfa39e][/i:1268bfa39e]

[quote:1268bfa39e]
SELECT field
FROM Table1
WHERE Table1.field1 = (SELECT field1 FROM Table2 WHERE field2 ='somevalue')[/quote:1268bfa39e]

The MySQL site led me to create this solution:

http://dev.mysql.com/doc/mysql/en/rewriting-subqueries.html

[quote:1268bfa39e] SELECT field
FROM Table1
LEFT JOIN Table2 ON Table1.field1=Table2.field1
WHERE Table2.field2= 'somevalue'[/quote:1268bfa39e]



Tags:

Latest Articles

  • PHP2Shell Patching, Migration and Vulnerability Guide With Solutions
  • Firefox PDF Does Not Display - Shows Desktop Or Other App Instead Solution
  • How To Convert HTML to Text Based PDF
  • How To Emulate Android in Linux
  • How to use KVM and GUI inside Docker
  • python spacey ERROR: No matching distribution found for thinc<8.4.0,>=8.3.12
  • Debian 11 security repo fixes due to EOL
  • MySQL vs MariaDB how to create a socket user tutorial
  • Ubuntu Linux Mint Desktop Dark Black Cannot See Solution
  • How to combine .txt ACLs without breaking things
  • How to ping all of Googlebot's IPs script
  • 'virtio0' uses a qcow2 feature which is not supported by this qemu version: QCOW version 3
  • Linux bash script to get the IP of a list of hostnames
  • How To Use Camera Webcam in Docker for OBS Studio etc...
  • Computer Server Won't Post Boot Or Enter BIOS Setup After Installing RAID SAS or GPU Card etc..
  • How To Test PHP Scripts from CLI with GET variables/query string
  • apt-cache how to see all available versions of a package in Debian Ubuntu Mint
  • Virtualbox VBox Guest-utils drag and drop files stops working with Windows VMs
  • How To Remove Ubuntu Netplan and Go Back to /etc/network/interfaces
  • How To Force Flash an AMD Instinct GPU To Another Model Using Debian Ubuntu Mint Linux