I'm not able to find in SQL Server 2005 the utility that phpmyadmin has for exporting tables.
My case is:
I have an small table (20 rows) and I need to delete some columns I won't need.
So I need a way to dump all info the table contains in an insert query. Then, editing this query I just need to delete the columns I don't need and later I can delete the table and create it again filling it with the edited insert query.
How can I do that with SQL Server 2005?
Rather than exporting, dropping, recreating and repopulating the table, why not simply drop each of the unwanted columns:
ALTER TABLE TableName DROP COLUMN ColumnName;
Further details here.
Related
I just deleted some record from my database table.i just want to retrieve those data is this possible?
i don't have any backup of the database
If by any chance you're using SQL 2016+ and your table is temporal table please try this:
SELECT * FROM [yourTable] FOR SYSTEM_TIME ALL
I have a table TEST that has 41 million+ records in it.
I have two main columns in this table that I am interested in:
MESSAGE of type CLOB
MESSAGE_C of type VARCHAR2(2048)
The table Test is range partitioned using a partition column named PART_DATE where one partition has data for one day.
I tried using the below to get the job done:
ALTER TABLE TEST ADD MESSAGE_C VARCHAR2(2048);
UPDATE TEST SET MESSAGE_C = MESSAGE;
COMMIT;
ALTER TABLE TEST DROP COLUMN MESSAGE;
ALTER TABLE TEST RENAME COLUMN MESSAGE_C TO MESSAGE;
But I got stuck on step 2 for around 4 hours. Our DBA said, these was a blocking due to full table scans.
Can someone please tell me:
What would be a better/more efficient way to get this done?
Would using the PART_DATE field in the where clause of the update query help?
Consider using an INSERT INTO SELECT to create the new table on the fly with a new name, then add the indexes after creating the table, drop the old table, and rename the new table to the old name.
It's a DML operation, so it will be significantly faster, and also isn't slowed down by server logging settings.
I've used this approach to alter tables with 500 million records a bit recently.
I have a table in a database and I have same table to other databases.I add some columns of the table of first database.Now I want to check that all off database's table are same or not.If its not then add those columns on those tables.Please give any kind of writing sp or another idea to do that
You can use INFORMATION_SCHEMA.COLUMNS to Check all the column names of all tables present in a database.
SELECT * FROM INFORMATION_SCHEMA.COLUMNS
Of course this may not be a complete answer for your question but thought this will help you in some way.
I am trying to rename a table on sql server using the following command:
alter table <schema>.<old_name> RENAME TO <new_name>;
The table is fairly small: approximately 500 rows with 15 columns. The command runs for more than 15 minutes before I kill it.
I have verified that I have permissions to rename the tables since I have renamed a couple of other tables in the same schema (which took less than a minute because they were empty).
Any suggestions?
Copy the data into another table (select * into), then just drop and recreate the table using the correct name, then insert the data back in.
I wanted to know that, Suppose I have a table in one database with say 1000 records and I have similar table in another database with say 500 records.
Now my question is If I will try to import data from say DB1.Tbl1 to DB2.Tbl1, then what will happen? Is there any possibilities of duplicacy of the data?
I wanted the records of DB1.Tbl1 to copy into DB2.Tbl1 table. Please clear my confusion.
If you have same data in both tables you can first truncate 2nd table after that you can import data from 1st table by Insert Command or "import data" task
Try this
INSERT INTO DB1.dbo.Tbl1 SELECT * FROM DB2.dbo.Tbl2
This just moves the data. If you want to move the table definition, you have to do something else.
Note that, SQL Server Management Studio's "Import Data" task (right-click on the DB name, then tasks) will do most of this for you. Run it from the database you want to copy the data into.
If the tables don't exist it will create them for you, but you'll probably have to recreate any indexes. If the tables do exist, it will append the new data by default but you can adjust that (edit mappings) so it will delete all existing data.
Try this:
We can copy all columns from one table to another, existing table:
INSERT INTO table2
SELECT * FROM table1;
Or we can copy only the columns we want to into another, existing table:
INSERT INTO table2
(column_name(s))
SELECT column_name(s)
FROM table1;