Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Post History

60%
+1 −0
Q&A How do I find all the tables in a database that don't have a specific column?

The select for finding tables without a specific column name is, SELECT DISTINCT table_name FROM information_schema.tables WHERE table_schema = 'DATABASE_NAME' AND table_name NOT IN( SELECT DI...

posted 4y ago by Charlie Brumbaugh‭  ·  edited 4y ago by Charlie Brumbaugh‭

Answer
#2: Post edited by user avatar Charlie Brumbaugh‭ · 2020-09-11T15:26:26Z (over 4 years ago)
  • The select for this is,
  • ```
  • SELECT DISTINCT table_name
  • FROM information_schema.tables
  • WHERE table_schema = 'DATABASE_NAME'
  • AND table_name NOT IN(
  • SELECT DISTINCT TABLE_NAME
  • FROM INFORMATION_SCHEMA.COLUMNS
  • WHERE COLUMN_NAME ='COLUMN_NAME'
  • AND TABLE_SCHEMA='DATABASE_NAME'
  • );
  • ```
  • The select for finding tables without a specific column name is,
  • ```
  • SELECT DISTINCT table_name
  • FROM information_schema.tables
  • WHERE table_schema = 'DATABASE_NAME'
  • AND table_name NOT IN(
  • SELECT DISTINCT TABLE_NAME
  • FROM INFORMATION_SCHEMA.COLUMNS
  • WHERE COLUMN_NAME ='COLUMN_NAME'
  • AND TABLE_SCHEMA='DATABASE_NAME'
  • );
  • ```
#1: Initial revision by user avatar Charlie Brumbaugh‭ · 2020-09-11T15:25:42Z (over 4 years ago)
The select for this is,

```
SELECT DISTINCT table_name 
FROM information_schema.tables
WHERE table_schema = 'DATABASE_NAME'
AND table_name NOT IN(
	SELECT DISTINCT TABLE_NAME 
    FROM INFORMATION_SCHEMA.COLUMNS
    WHERE COLUMN_NAME ='COLUMN_NAME'
	AND TABLE_SCHEMA='DATABASE_NAME'
);
```