大约有 5,880 项符合查询结果（耗时：0.0287秒） [XML]
How can I drop all the tables in a PostgreSQL database?
How can I drop all tables in PostgreSQL, working from the command line?
24 Answers
24
...
Database sharding vs partitioning
...
Partitioning is more a generic term for dividing data across tables or databases. Sharding is one specific type of partitioning, part of what is called horizontal partitioning.
Here you replicate the schema across (typically) multiple instances or servers, using some kind of logic or ...
Laravel Migration Change to Make a Column Nullable
...nging a column; here's an example from the offical documentation:
Schema::table('users', function($table)
{
$table->string('name', 50)->nullable()->change();
});
Source: http://laravel.com/docs/5.0/schema#changing-columns
Laravel 4 does not support modifying columns, so you'll need ...
How to get primary key column in Oracle?
...
SELECT cols.table_name, cols.column_name, cols.position, cons.status, cons.owner
FROM all_constraints cons, all_cons_columns cols
WHERE cols.table_name = 'TABLE_NAME'
AND cons.constraint_type = 'P'
AND cons.constraint_name = cols.constra...
How to insert a row in an HTML table body in JavaScript
I have an HTML table with a header and a footer:
9 Answers
9
...
Search an Oracle database for tables with specific column names?
We have a large Oracle database with many tables. Is there a way I can query or search to find if there are any tables with certain column names?
...
How to make a JTable non-editable
How to make a JTable non-editable? I don't want my users to be able to edit the values in cells by double-clicking them.
...
Copy a table from one database to another in Postgres
I am trying to copy an entire table from one database to another in Postgres. Any suggestions?
19 Answers
...
How do I create a foreign key in SQL Server?
...
create table question_bank
(
question_id uniqueidentifier primary key,
question_exam_id uniqueidentifier not null,
question_text varchar(1024) not null,
question_point_value decimal,
constraint fk_questionbank_ex...
What is the difference between partitioning and bucketing a table in Hive ?
I know both is performed on a column in the table but how is each operation different.
8 Answers
...