sql-delete

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SQL Table Datastructure, is this wrong? Using CASCADING Delete

Here are the 3 tables I am having problems with: Table: Opportunities - Holds various opportunity(job) descriptions[详细]

2023-02-27 08:12 分类：问答
SQL 'DELETE CASCADE'

I have a table B that has a foreign key to table A, and now I want to do a sorta \"DELETE CASCADE\" thingie on A, but PostgreSQL won\'t accept the following:[详细]

2023-02-26 13:49 分类：问答
You can't specify target table 'A' for update in FROM clause

This is my request > DELETE FROM A WHERE id in (Select > id From ALeft Join B on开发者_Python百科 A.id=B.id[详细]

2023-02-25 11:10 分类：问答
Get field value before delete it

I have two table categories ( hierarchical structure ) and attachment that have relations togeth开发者_如何学Cer.[详细]

2023-02-25 01:36 分类：问答
How to Delete All Items From SQLite in Android

I would like to make an app where the user clicks a button, and the SQLite database is cleared. Here\'s what I\'ve tri开发者_如何学JAVAed so far:[详细]

2023-02-25 00:34 分类：问答
Row is not being deleted because of cascade trigger updates this row

I have problem with deleteing rows in table which has trigger which invokes trigger of second table, which updates row in first table. Here is the description:[详细]

2023-02-24 05:09 分类：问答
Updating a mysql-table. one field = old_value - 1

Wh开发者_运维百科at I need to do is: - Delete one entry from table formfields - Update EVERY field with ordering > (ordering of the deleted field)[详细]

2023-02-21 14:04 分类：问答
Safe deleting in SQL Server

I am trying to delete table rows using custom table valued function in where clause. Like this : DELETE FROM TABLE WHERE ID NOT IN(SELECT ID FROM MYFUNCTION(DATE));[详细]

2023-02-17 04:16 分类：问答
Find differences between rows with duplicate(s) in one field

I am about to remove duplicates from my database using delete from table where id not in ( select min(id)[详细]

2023-02-12 05:08 分类：问答
Delete all entries that have a certain field

I have a database table that has 4 fields. It is created like this: CREATE TABLE meta ( meta_id bigint(20) NOT NULL auto_increment,[详细]

2023-02-11 18:11 分类：问答