大约有 37,000 项符合查询结果（耗时：0.0354秒） [XML]
Convert Rows to columns using 'Pivot' in SQL Server
I have read the stuff on MS pivot tables and I am still having problems getting this correct.
8 Answers
...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
I want to copy a CSV file to a Postgres table. There are about 100 columns in this table, so I do not want to rewrite them if I don't have to.
...
Update statement with inner join on Oracle
...
That syntax isn't valid in Oracle. You can do this:
UPDATE table1 SET table1.value = (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC)
WHERE table1.UPDATETYPE='blah'
AND EXISTS (SELECT table2.CODE
...
How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
...
Query grants for a table in postgres
...dy found it:
SELECT grantee, privilege_type
FROM information_schema.role_table_grants
WHERE table_name='mytable'
share
|
improve this answer
|
follow
|
...
Copying data from one SQLite database to another
...id reinserting data, so I was wondering if it was possible to copy a whole table from one database to another?
8 Answers
...
How do I see all foreign keys to a table or column?
...ow do I get a list of all foreign key constraints pointing to a particular table? a particular column? This is the same thing as this Oracle question , but for MySQL.
...
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
...
How to ALTER multiple columns at once in SQL Server
I need to ALTER the data types of several columns in a table.
13 Answers
13
...
Turn off constraints temporarily (MS SQL)
I'm looking for a way to temporarily turn off all DB's constraints (eg table relationships).
5 Answers
...