How do I add a million rows in SQL Server?
Firstly, I wrote a prc to insert row by row. Then I generate some random data for insert with the NVARCHAR(MAX) column to be a string of 1000 characters. Then use a loop to call the prc to insert the rows. The perf is very bad which takes 48 mins if I use SQL server to log on the database server to insert.
How do you backup a table?
You can create table script along with its data using following steps:
- Right click on the database.
- Select Tasks > Generate scripts …
- Click next.
- Click next.
- In Table/View Options, set Script Data to True; then click next.
- Select the Tables checkbox and click next.
- Select your table name and click next.
How do I move records from one table to another?
The SQL INSERT INTO SELECT Statement The INSERT INTO SELECT statement copies data from one table and inserts it into another table. The INSERT INTO SELECT statement requires that the data types in source and target tables matches. Note: The existing records in the target table are unaffected.
How to create a big table in Oracle?
Referring to the script in your answer: (Also, in your book entitled “Effective Oracle by Design”, the appendix-A contains the same BIG_TABLE script.) Inside the while loop, you are doing the commit.
Which is the fastest way to create a table?
PLSQL is not the fastest way. Use insert into table select * from table. probably Tom doesn’t know it. You can send the emails to junk folder. Please review SQL before posting!!
How to check the data in the clone table?
This will take a while, but not nearly as long as an update. Once it completes, check the data in the clone table to make sure it everything is correct. Then, recreate all non-clustered primary keys/unique constraints/indexes and foreign key constraints (in that order). Recreate default and check constraints, if applicable. Recreate all triggers.