A core statement in SQL that does what it says on the tin: inserts data into a table.

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1answer
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How to insert values into a table from a select query in PostgreSQL?

I have a table items (item_id serial, name varchar(10), item_group int) and a table items_ver (id serial, item_id int, name varchar(10), item_group int). Now I want to insert a row into items_ver ...
14
votes
3answers
7k views

Efficient INSERT INTO a Table With Clustered Index

I have a SQL statement that inserts rows into a table with a clustered index on the column TRACKING_NUMBER. E.G.: INSERT INTO TABL_NAME (TRACKING_NUMBER, COLB, COLC) SELECT TRACKING_NUMBER, COL_B, ...
14
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4answers
4k views

How can I tell WHY an insert on a certain table is slow?

I know that an INSERT on a SQL table can be slow for any number of reasons: Existence of INSERT TRIGGERs on the table Lots of enforced constraints that have to be checked (usually foreign keys) Page ...
8
votes
1answer
8k views

Optimal way to ignore duplicate inserts?

Background This problem relates to ignoring duplicate inserts using PostgreSQL 9.2 or greater. The reason I ask is because of this code: -- Ignores duplicates. INSERT INTO db_table ...
6
votes
2answers
510 views

What is the fastest way to insert large numbers of rows?

I have a database where I load files into a staging table, from this staging table i have 1-2 joins to resolve some foreign keys and then insert this rows into the final table (which has one partition ...
6
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2answers
2k views

Which one is more efficient: select from linked server or insert into linked server?

Suppose I have to export data from one server to another (through linked servers). Which statement will be more efficient? Executing in source server: INSERT INTO ...
6
votes
2answers
6k views

How to use Unique key via combinations of table fields?

Take a look at the following sqlfiddle: http://sqlfiddle.com/#!2/dacb5/1 CREATE TABLE contacts ( id int auto_increment primary key, name varchar(20), network_id int, ...
5
votes
3answers
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Oracle 10g: Properly using ora_rowscn to detect table row changes (ie, inserts, updates, deletes)

Some research into checking when a table's records were last updated, modified, or deleted has lead me to the pseudo column known as ora_rowscn. First, I do this: select max(ora_rowscn) from ...
5
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2answers
769 views

Speed up INSERTs

I need to have a way to insert to a table, fast, synchronous, with minimal duration. What I've tried ("blind") is : Have no index on the table whatsoever Switch to simple logging (from full logging) ...
5
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2answers
2k views

BULK INSERT - best usage

I need to export 150 million rows of only int/bigint columns from one SQL instance to another. I am using BCP queryout to export the rows and BULK INSERT to import the rows to another table. I split ...
5
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1answer
116 views

Find out which columns must be specified in insert-statement

Sometimes when inserting data in a table with many columns it could be useful to know which columns must be specified if the insert-statement shouldn't fail. I wrote this query to find out which ...
4
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3answers
8k views

How do I insert a row which contains a foreign key?

Using PostgreSQL v9.1. I have the following tables: CREATE TABLE foo ( id BIGSERIAL NOT NULL UNIQUE PRIMARY KEY, type VARCHAR(60) NOT NULL UNIQUE ); CREATE TABLE bar ( id BIGSERIAL ...
4
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3answers
2k views

Is (and if how) it possible in Oracle to “insert into <table> values <rowtype-variable>” if <table> has virtual columns

Here's a table create table tq84_virtual_test_without ( col_1 number, col_2 number, col_3 number, col_4 number, col_5 number ); with the rule that col_5's value is the sum of the other ...
4
votes
3answers
4k views

How can I insert if key not exist with PostgreSQL?

I have a table: CREATE TABLE mytable (id SERIAL, name VARCHAR(10) PRIMARY KEY) Now I want to add names to this table, but only if they not exist in the table already, and in both cases return the ...
4
votes
1answer
527 views

Does the order of columns has a significant effect on INSERT?

Do we experience a noticeable difference in performance for these two queries? INSERT INTO table (col1, col2, col3, col4, col5) ... and INSERT INTO table (col5, col3, col1, col2, col4) ... Do we ...
4
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1answer
3k views

How to insert an IP-address into an inet column in PostgreSQL?

I would like to insert an IP-address into a column that has type inet. In what format can I insert the data? is it only binary or is there any way I can insert from text e.g. "192.168.1.082"? Are ...
4
votes
1answer
2k views

nest SELECT in INSERT

I'm trying to do something like: INSERT INTO stories (vid, ip, body, timestamp) VALUES ( (SELECT vid+1 FROM stories ORDER BY vid DESC LIMIT 1), INET_ATON('127.0.0.1'), 'test', ...
4
votes
1answer
2k views

Getting the “ORA-00911” error when I am trying to insert more than 1 row

Lets say I have the follow insert statements. INSERT INTO E_PRODUCT VALUES ('PCD2', 'PC Dual Core', 499, 22, 475, 'PC', NULL); INSERT INTO E_PRODUCT VALUES ('PCL4', 'Laptop PC', 599, 9, 225, 'PC', ...
4
votes
1answer
209 views

Negative number of rows inserted

I just ran a rather simple insert statement (that I think processed alot of rows), and I got the message: "-1,311,750,183 rows inserted". Should I be concerned about the fact that it's negative?
4
votes
2answers
485 views

Subquery in the VALUES clause

Here's a real-world schema: CREATE TABLE [dbo].[Setting] ( [ID] [BIGINT] NOT NULL, [Module] [NVARCHAR](400) NOT NULL, [Property] [NVARCHAR](400) NOT NULL, [Value] ...
4
votes
1answer
378 views

Select one name per person where spelling variations exist

I have a source table that contains Employee IDs and names. The employee names may be listed multiple times with variations on the exact spelling (see 'source table' for example - note the middle ...
4
votes
1answer
162 views

Disk usage spikes: good, bad or indifferent?

I'm working on a project where we're receiving data from multiple sources, that needs to be saved into various tables in our database. Fast. I've played with various methods, and the fastest I've ...
4
votes
1answer
938 views

How can I get status messages during a large re-indexing operation with MySQL 5.5?

I get large data transfers periodically that I used to completely replace the contents of a MySQL table. Each time I do this, I truncate the table, disable keys, add several million rows of data, and ...
4
votes
1answer
265 views

Move values from one table to another one via stored procedure in sql server 2008

I have two tables Login (userid, username, password) audit_login (userid, Transaction_Date, Status (success or failed) Now I want create a stored procedure in which, if anyone wants to login then ...
4
votes
2answers
187 views

Sudden performance decrease in SQL Server

I've got a problem with a SQL Server 2008 R2 instance. Last week the performance suddenly broke down. All inserts are very very slow. It takes 4-5 times longer than before. On the hardware we found no ...
3
votes
3answers
6k views

Slow insert in SQL Server 2008

Our products' database contains an audit trail table: CREATE TABLE gn_AuditTable( gn_ObjectId int NULL, gn_Action smallint NULL, gn_Time datetime NULL, gn_UserId int NULL, gn_Login ...
3
votes
3answers
131 views

Inserting two rows from single row

I have to import users from the usersToImport table into the userContact table. usersToImport contains telephone and e-mail information in a single row for each user, but userContact stores one kind ...
3
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3answers
229 views

Checking for dupes on Compact Insert Statement

I'm not sure if that is the correct term "Compact Insert Statement" It is just what I have always heard it referred to. It goes as follows: INSERT INTO [tblUsers] ([username], [password]) ...
3
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2answers
4k views

How Does Oracle Handle Multiple Concurrent INSERTs Against One Table

I am trying to understand Oracle 11g a little more closely. My question is simple: how does Oracle handle two sessions that are attempting to insert records into a single table at the same time. For ...
3
votes
1answer
2k views

On duplicate key do nothing

I am inserting into the following table using LuaSQL with PtokaX API. CREATE TABLE `requests` ( `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, `ctg` VARCHAR(15) NOT NULL, `msg` ...
3
votes
3answers
949 views

InnoDB insertion faster

I'm a graduate school student researching OLAP with Mondrian OLAP. So I want to insert data into InnoDB (MySQL 5.5) faster at the initial loading. In this environment, the only user is me, so I think ...
3
votes
2answers
1k views

Mysql load from infile stuck waiting on hard drive

I've got a windows 7 64 bit machine that I'm using for some load testing of a mysql db. My program uses sqlalchemy to connect and run several load from infile statements on said database. These bulk ...
3
votes
2answers
1k views

How to INSERT row in another database/schema in MySQL

Let's say I have the following database/schema setup with the following tables: SCHEMA_1 (default): TABLE_1 SCHEMA_2: TABLE_2 How do I insert rows in another schema's ...
3
votes
1answer
315 views

How this simple Stored Procedure ended up in Deadlock

Thanks for all and this forum is really helpful. After few minutes of system running we get “Try restarting the transaction.” And its end up in deadlock. We use MySQL 5.5.28 and the Java code ...
3
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2answers
2k views

LOAD DATA (400k rows) INFILE takes about 7 minutes, cannot kill the “logging slow query” process?

MySQL version: 5.5.13 The query that I'm using: SET AUTOCOMMIT=0; LOAD DATA INFILE '/data10/select_into.outfile/v3_zone_date.out' INTO TABLE v3_zone_date FIELDS TERMINATED BY ','; COMMIT; ...
3
votes
3answers
132 views

Is there any way to temporarily enforce columnar uniqueness on items currently being inserted?

Is there any way to temporarily enforce columnar uniqueness on items currently being inserted? For instance, I'm splitting payments and charges to their own tables from a previously unified ...
3
votes
1answer
165 views

Combine - Select Into, with Insert Into Select

I've read many explainations like this one here that say "Select Into ..." is to create new tables and "Insert Into ..." is to append to existing tables. I'm automating a coworker's sql scripts. ...
3
votes
1answer
207 views

BULK INSERT Data from file but ignore the first occurence of field terminator

I have a file that has data arranged in the following style: 1 1 0.5102 0.4898 0.0000 0.0000 0.0000 1 2 0.3114 0.6886 0.0000 0.0000 0.0000 I need to load ...
3
votes
1answer
936 views

Generate insert statements for table AND related data

I'm looking to move data from tables and related tables between 2 databases. The trouble is the primary keys are out of sync. Is anyone aware of a tool which can generate insert statements for a ...
3
votes
1answer
211 views

Adding new key(s) to enable partitioning, INSERT performance?

I have a table to storage GPS coordinates with multiple (~30) inserts per second (from 50 diferent devices) during 12 hours per day, so the table is growing fast, to improve the SELECT speed I was ...
3
votes
1answer
2k views

How do you read MySQL InnoDB Monitor output?

I am new to DB Administration. I am trying to figure out the cause of deadlock exceptions, but I am unable to make sense of the logs. The log says that "transaction 1 is rolled back". Why is this the ...
2
votes
3answers
4k views

How can I configure MySQL Innodb to handle 1000s of inserts per hour?

I have a very high traffic website where it is possible that 1000s of new records are inserted every hour. This one error is crippling the site: PDOException: SQLSTATE[40001]: Serialization failure: ...
2
votes
2answers
379 views

Check if row exists

I need to write a query that will insert a row only once, even if the query is run multiple times. Being new to SQL (well new-ish), I did an if not exists(...) but a friend said he preferred deleting ...
2
votes
2answers
176 views

INSERT succeeds but all inserted values become NULL

I tired to execute an insert directly from phpMyAdmin as follows: INSERT INTO oracle.PLAYLIST_MUSIC ( TID, ID, STATUS, CREATED_BY, ...
2
votes
2answers
1k views

Move data from one table to other in batch's

I have a table 18 Million records I need to add append it to another table (with the same structure) I tried the import-export wizard, the problem is that the log gets very very big and eventually it ...
2
votes
2answers
118 views

Possible to have nested inserts in Postgres 8.4?

I'm trying to import data into an inventory type database. Here's what I have for the tables (truncated for brevity): create type hostrole as enum ('Physical', 'Virtual', 'Hypervisor', 'Other'); ...
2
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2answers
3k views

How does mysql decide if concurrent insert is possible for a MyISAM table?

For "concurrent inserts", MySQL reference manual has the following explanation: The MyISAM storage engine supports concurrent inserts to reduce contention between readers and writers for a given ...
2
votes
1answer
2k views

sqlcmd slow against SQL Server 2008 R2

I am trying to import a longish SQL script (3.5 millions of lines, 1,5 GB in size) containing mainly short INSERT INTO statements with data using sqlcmd -E -d <database> -S 127.0.0.1 -i ...
2
votes
2answers
433 views

Insert values from a record variable into a table

I am developing a user-defined function that takes two arguments: create or replace function gesio( events_table_in regclass, events_table_out regclass) returns void as $$ ... $$ ...
2
votes
1answer
129 views

After dropping the clustered index, it is still attempting to do a clustered insert [closed]

I am trying to convert data from one database system to another. One of the tables I need to transfer and format contains over 10 million rows. I am running the following script to do it: USE ...