SQL

SQL, or Structured Query Language, is computer language used to get and modify data from databases. It was created in 1974 by Donald D. Chamberlin and Raymond F. Boyce. The first commercially available version was sold by Oracle in 1979.

Common Queries

  1. FROM: A clause that is used to select a source table for retrieving data.
  2. WHERE: A clause used to narrow down results by only selecting specific data.
  3. ORDER BY: A clause used to sort data results.

SQL Books

SQL Answers

  • Search for Questions

    Preview

References

Upload a picture from your computer

You can upload a JPG, GIF or PNG file. Do not upload pictures containing celebrities, nudity, artwork, or copyrighted images).

Specify an image URL

Image URL

Search

Type the image URL in the text field above and click 'Search'. Large images may take awhile to process.

Please remember that using others' images on the web without their permission is not very nice.

Crop this picture

Just click and drag on the image below to start cropping! Use the handles on the crop box to resize it.

Preview

Upload a picture from your computer

You can upload a JPG, GIF or PNG file. Do not upload pictures containing celebrities, nudity, artwork, or copyrighted images).

Specify an image URL

Image URL

Search

Type the image URL in the text field above and click 'Search'. Large images may take awhile to process.

Please remember that using others' images on the web without their permission is not very nice.

Crop this picture

Just click and drag on the image below to start cropping! Use the handles on the crop box to resize it.

Small Medium Large Full

Preview

Hotkeys