Tag: INSERT

Feed: Recent Announcements. Amazon EMR integration with AWS Lake Formation allows you to define and enforce database, table, and column-level permissions when Apache Spark users access data in Amazon S3 through the Glue Data Catalog. Previously, with AWS Lake Formation integration is enabled, you were limited to only being able to read data using Spark SQL statements such as SHOW DATABASES and DESCRIBE TABLE. Now, you can also insert data into, or update the Glue Data Catalog tables with these statements: INSERT INTO, INSERT OVERWRITE, and ALTER TABLE. This feature is enabled on Amazon EMR 5.34 in the following AWS ... Read More

Feed: MariaDB Knowledge Base Article Feed. Author: . This filter was introduced in MariaDB MaxScale 2.1. Overview The insertstream filter converts bulk inserts into CSV data streams that are consumed by the backend server via the LOAD DATA LOCAL INFILE mechanism. This leverages the speed advantage of LOAD DATA LOCAL INFILE over regular inserts while also reducing the overall network traffic by condensing the inserted values into CSV. Note: This is an experimental filter module Filter Parameters This filter has no parameters. Details of Operation The filter translates all INSERT statements done inside an explicit transaction into LOAD DATA LOCAL ... Read More

Feed: CronJ. Author: Nidhi Swadi; Do you want to attract your users to some important details? Do you wish to organize the information to make it easier to understand? You can do this easily in Google Docs. How? Just use the drawing tool and insert text boxes and shapes in your GDocs. If you are wondering how to insert a text box in google docs, you have visited the right place. Get to know how to add text box in google docs easily. How to insert text box in Google Docs using the Drawing Tool? What is the drawing tool?A drawing tool ... Read More

Feed: Planet MySQL; Author: Joshua Otwell; I use CodeIgniter 4 a great deal for learning, personal projects, and application development. In this post, I cover 2 different methods you can use and retrieve the MySQL Last Insert ID value after executing an INSERT statement in CodeIgniter. Continue reading for more information… Self-Promotion: If you enjoy the content written here, by all means, share this blog and your favorite post(s) with others who may benefit from or like it as well. Since coffee is my favorite drink, you can even buy me one if you would like! Model Setup Starting out, ... Read More

Feed: Recent Announcements. This January, we launched Amazon EMR integration with Apache Ranger, a feature that allows you to define and enforce database, table, and column-level permissions when Apache Spark users access data in Amazon S3 through the Hive Metastore. Previously, with Apache Ranger is enabled, you were limited to only being able to read data using Spark SQL statements such as SHOW DATABASES and DESCRIBE TABLE. Now, you can also insert data into, or update the Apache Hive metadata tables with these statements: INSERT INTO, INSERT OVERWRITE, and ALTER TABLE. This feature is enabled on Amazon EMR 6.4 in the following ... Read More

Feed: Planet PostgreSQL. Let's say you have a script of one million of insert statements with literal values. Of course, this is a bad idea. SQL is language, not a data exchange format. You should have a file to import with COPY, with all values as CSV for example. Or at least, if you are a big fan of INSERT statements, have thousands of row values in it. Or prepare the statement with parameters and call with each parameter. However, this is the kind of things we encounter in real life. I still remember 20 years ago when I got ... Read More

Feed: Planet PostgreSQL. The missing piece of the puzzle is that these tables were insert-only. In versions of PostgreSQL prior to 13, no auto*vacuum* would be kicked off with an insert-only workload, presumably because if there are no updates or deletes, there would be no free space that would need to be reclaimed. autoanalyze was kicked off for insert-only workloads, since there was new data and new statistics that could be gathered. Since autovacuum was not running on this table, the Visibility Map was not updated, and thus the query performance started to suffer over time. Once the Visibility Map was updated, performance returned ... Read More

Feed: Planet MySQL; Author: Jesper Krogh; Locking is an important concept in databases. They help regulate access to the data, so your SELECT queries return consistent results and DML and DDL statements leave the data and schema in a consistent state. For the data, there are four different transaction isolation levels that influence which locks are taken. The most two commonly used isolation levels are REPEATABLE READ (the default in InnoDB) and READ COMMITTED (the default in some other databases). Both of those are said to provide non-locking reads, but there is a little more to it than that. Selecting ... Read More

Feed: Planet MySQL; Author: Michael McLaughlin; I found myself explaining the nuances of INSERT statements and whether you should use named or positional notation. While the class was on Zoom, I could imagine the blank stares in the silence of my headphones. Then, I had to remind them about mandatory (NOT NULL constrained) and optional (nullable) columns in tables and how an INSERT statement requires an explicit NULL value for optional columns when the INSERT statement isn’t inserting a value into that column. Then, I asked if somebody could qualify the different types of INSERT statements; and what would happen ... Read More

Feed: Planet MySQL; Author: EverSQL; Optimize your database, auto-magically.Click to start, for free. At some points, many of our customers need to handle insertions of large data sets and run into slow insert statements. This article will try to give some guidance on how to speed up slow INSERT SQL queries. The following recommendations may help optimize your data loading operations: Remove existing indexes - Inserting data to a MySQL table will slow down once you add more and more indexes. Therefore, if you're loading data to a new table, it's best to load it to a table without any indexes, ... Read More