t sql - Check if table exists in SQL Server - Stack Overflow
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = N'Customers') BEGIN PRINT 'Table Exists' END Approach 2: Using OBJECT_ID() function. …
MySQL > Table doesn't exist. But it does (or it should)
Now restore the database to a new database and rebuild the missing table(s). Then dump the broken database. In our case we were also constantly getting mysql has gone away messages …
How to get all table definitions in a database in Hive?
describe my_table_01; describe my_TABLE_02; So you will have a flat file with the all your describe statements mentioned above. For example, if you have the query in a flat file called …
When to use 1-to-1 relationships between database tables?
2016年9月16日 · A 1 to 1 relationship does not mean that for each record in table A there is 1 corresponding record in table B. Instead, it means that for each record in table A there will be …
database - Table Naming: Underscore vs Camelcase? namespaces?
When singularising the table names, you can silently add -table to the singular table name in your head, and then it all makes sense again. SELECT username FROM UserTable Sounds more …
database - SQL history table design - Stack Overflow
If efficiency of storage space is your main concern, then I would break the history into multiple tables. This would mean having new column value table linked to both an edit event table and …
database - What is a lookup table? - Stack Overflow
I have always considered a lookup table to basically be a set of options that don't define any relationships. Example: luCarMake ----- id Make -- ----- 1 Audi 2 Chevy 3 Ford The database …
database - User, customer, admin account in 3 different tables?
2010年8月18日 · If a user can only be one type, you'd be better off with one table and a bit field for IsAdministrator, etc. If a user can be of more than one account type, you should then have …
Easiest way to copy a table from one database to another?
2012年9月3日 · DB1 have a table users which you like to copy to DB2. Under PHPMyAdmin, open DB1, then go to users table. On this page, click on the "Operations" tab on the top right. …
Copy tables from one database to another in SQL Server
2013年12月8日 · If it’s one table only then all you need to do is . Script table definition; Create new table in another database ; Update rules, indexes, permissions and such; Import data …