INFORMATION_SCHEMA is a series of views that provide access to metadata
about datasets, tables, and views.
For projects that use on-demand pricing, queries against
views incur a minimum of 10 MB of data processing charges, even if the bytes
processed by the query are less than 10 MB. 10 MB is the minimum billing amount
for on-demand queries. For more information, see On-demand pricing.
INFORMATION_SCHEMA queries are not cached, you are charged each time
you run an
INFORMATION_SCHEMA query, even if the query text is the same each
time you run it.
You are not charged storage fees for the
INFORMATION_SCHEMA is subject to the following
INFORMATION_SCHEMAqueries must be in standard SQL syntax.
INFORMATION_SCHEMAdoes not support legacy SQL.
INFORMATION_SCHEMAquery results are not cached.
INFORMATION_SCHEMAcannot be used to retrieve metadata on partitions in partitioned tables.
INFORMATION_SCHEMAviews cannot be used in DDL statements.
Retrieving metadata by using
INFORMATION_SCHEMA queries requires no special
permissions. The results returned by querying
INFORMATION_SCHEMA views are
filtered based on the IAM permissions required to get metadata about each