alter-table
MySQL foreign key creation with alter table command
I created some tables using MySQL Workbench, and then did forward ‘forward engineer’ to create scripts to create these tables. BUT, the scripts lead me to a number of problems. One of which involves[详细]
2022-12-26 14:33 分类:问答Alter Sql table (Change foreign key to Second primary of the table)
I\'ve a sql table with a primary key(Auto Incremented) and a foreign key.Now I need to modify the table by modifying the fore开发者_Go百科ign key to second primary key so that its values are not allow[详细]
2022-12-25 06:41 分类:问答Any way to view ALTER TABLE after its been executed? -MySQL
In the same way SHOW CREATE TABLE tblname; brings back what was previously executed, is there anyway to view the SQL of a开发者_如何学Pythonn ALTER TABLE query?[详细]
2022-12-21 16:33 分类:问答MySql ALTER TABLE on Production Databases - Any Issues?
I have about 100 databases (all the same structure, just on different servers) with approx a dozen tables each. Most tables are small (lets say 100MB or less). There are occasional edge-cases where a[详细]
2022-12-20 14:10 分类:问答Alter a MySQL column to be AUTO_INCREMENT
I’m trying to modify a table to make its primary key column AUTO_INCREMENT after the fact.I have trie开发者_JS百科d the following SQL, but got a syntax error notification.[详细]
2022-12-19 03:36 分类:问答SQLite3 and Alter table .. after
Is there a simple way to modify a table in recent sqlite versions so that it matches a predefined schema?[详细]
2022-12-19 02:16 分类:问答Alter column, add default constraint
I havea table and one of the columns is \"Date\" of type datetime. We d开发者_开发百科ecided to add a default constraint to that column[详细]
2022-12-17 16:41 分类:问答Modify a Column's Type in sqlite3
I\'m pretty new to SQLite 3 and just now I had to add a column to an existing table I had. I went about doing that by doing: ALTER TABLE thetable ADD COLUMN category;.[详细]
2022-12-16 21:41 分类:问答Mysql 5.1.42 alter table auto_increment = 0 doesn't work, truncate does
For my automated acceptance tests, I want inserts to start with id=1. I achieved this on one PC (XP 32bit, mysql 5.1.something) with (after deleting all rows from the table), \"alter table tableName a[详细]
2022-12-16 01:44 分类:问答How can I rename a database column in a Ruby on Rails migration?
I wrongly named a column hased_password instead of hashed_password. How do I update the database schema, using migration to开发者_如何学JAVA rename this column?rename_column :table, :old_column, :new[详细]
2022-12-15 12:14 分类:问答