alter-table
alter table drop column syntax error using sqlite
This is the schema of my table: create table LPCG(ID integer primary key, PCG text, Desc text, test text);[详细]
2023-03-10 20:43 分类：问答How to add a new field and set all values = '1' in MySQL?
I want ad开发者_运维问答d a new field in my database, and set all rows values = \'1\'. How to do it correctly?[详细]
2023-03-05 13:54 分类：问答In grails need to change a field in a domain class to nullable after I have already gone to production
I have a domain class with a string field that I am changing to nullable.In DataSource.groovy I have the mode set to \"update.\"Is there any way to make grails alter the MySql without changing to \"cr[详细]
2023-03-03 20:16 分类：问答Why am I getting "ORA-01429: Index-Organized Table" when trying to modify column from VARCHAR2(200) to VARCHAR2(1000)?
It\'s currently a VARCHAR2(200) in the database, but it needs to be raised to VARCHAR(1000), so I am attempting to run this script:[详细]
2023-03-01 06:42 分类：问答MYSQL: Want to make a date column NULL
I have some changes to a Django app using a mysql database backend. I have been receiving this error.[详细]
2023-03-01 05:28 分类：问答Difference between 'character set' and 'default character set'
Is there any differ开发者_如何学Cence between statements ALTER TABLE xxx DEFAULT CHARACTER SET utf8[详细]
2023-03-01 01:39 分类：问答Altering more than one column in a table in oracle
Will the two scripts below (for altering a table) make diff..?? script 1 : alter table ACNT_MGR_HSTRY add DM_BTNUMBER DATA_TYPE ;[详细]
2023-02-20 21:35 分类：问答MySQL: ALTER IGNORE TABLE ADD UNIQUE, what will be truncated?
I have a table with 4 columns: ID, type, owner, description. ID is AUTO_INCREMENT PRIMARY KEY and now I want to:[详细]
2023-02-20 09:49 分类：问答altering a table column
createtable Names ( FirstNamevarchar(40), LastNamevarchar(40), FullNameAS FirstName+开发者_StackOverflowLastName[详细]
2023-02-19 09:02 分类：问答how to create two primary key with alter table
I have table broker wi开发者_运维技巧th this form broker { broker_code char(10) primary key . . . } and i have add to it another primary key with this form[详细]
2023-02-18 11:02 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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