You can get the same info that way. You cannot use a table regex pattern with a PARTITION clause. Identifies the table to be described. Optimize a table. A Delta table internally maintains historic versions of the table that enable it to be restored to an earlier state. Minimum version of readers (according to the log protocol) that can read the table. [ table_name. ] | Privacy Policy | Terms of Use, Review Delta Lake table details with describe detail, Privileges and securable objects in Unity Catalog, Privileges and securable objects in the Hive metastore, INSERT OVERWRITE DIRECTORY with Hive format, Language-specific introductions to Databricks. Delta Lake log entries added by the RESTORE command contain dataChange set to true. . -- Returns the metadata for `name` column. ------------------------------+------------------------------+----------+. Syntax: PARTITION ( partition_col_name = partition_col_val [ , ] ). DESCRIBE FUNCTION Article 11/01/2022 4 contributors Feedback In this article Syntax Parameters Examples Related articles Applies to: Databricks SQL Databricks Runtime Returns the basic metadata information of an existing function. Number of rows updated in the target table. By default table history is retained for 30 days. With Delta tables, not all fields are returned. Number of rows deleted in the target table. The name may not use a temporal specification. Can I also say: 'ich tut mir leid' instead of 'es tut mir leid'? Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Add a Z-order index. DESCRIBE DATABASE | Databricks on AWS | Privacy Policy | Terms of Use, Privileges and securable objects in Unity Catalog, Privileges and securable objects in the Hive metastore, INSERT OVERWRITE DIRECTORY with Hive format, Language-specific introductions to Databricks. The default is interval 7 days. See Review Delta Lake table details with describe detail for the detail schema. Size of the smallest file after the table was optimized. You can restore an already restored table. | Privacy Policy | Terms of Use, -- List all tables from default schema matching the pattern `sam*`, -- List all tables matching the pattern `sam*|suj`, Privileges and securable objects in Unity Catalog, Privileges and securable objects in the Hive metastore, INSERT OVERWRITE DIRECTORY with Hive format, Language-specific introductions to Databricks. If specified display detailed information about the specified columns, including the column statistics collected by The data files backing a Delta table are never deleted automatically; data files are deleted only when you run VACUUM. The metadata information includes column name, column type I'm wanting to find the equivalent of "describe history" for databricks Is there a faster algorithm for max(ctz(x), ctz(y))? How to get the all the table columns at a time in the azure databricks database, Access a table in Databricks whose column name is numeric. Number of files added to the sink(target). Output includes basic table information and file system information like Last Access , Created By, Type, Provider, Table Properties, Location, Serde Library, InputFormat , OutputFormat, Storage Properties, Partition Provider, Partition Columns, and Schema. In addition to the table schema and sample data, you can click the History tab to see the table history that displays with DESCRIBE HISTORY. View: a saved query typically against one or more tables or data sources. Tutorial: Delta Lake | Databricks on AWS The benefit of that is that you can save it as permament view, where in the above method you can't: Thanks for contributing an answer to Stack Overflow! While usage of SCHEMA and DATABASE is interchangeable, SCHEMA is preferred. Syntax DESCRIBE HISTORY table_name Parameters table_name ANALYZE TABLE | Databricks on AWS Returns the basic metadata information of an existing function. Thanks. Size of the 75th percentile file after the table was optimized. If 6 to 12 minutes, add 2 clusters. Can I trust my bikes frame after I was hit by a car if there's no visible cracking? SHOW TABLE EXTENDED | Databricks on AWS Optionally a partition spec or column name may be specified to return the metadata pertaining to a partition or column respectively. Upsert to a table. Number of bytes added after the table was optimized. For Spark SQL syntax details, see DESCRIBE DETAIL. If specified display detailed information about the specified columns, including the column statistics collected by Specifies schema name from which tables are to be listed. DESCRIBE DETAIL - Databricks If you set this config to a large enough value, many log entries are retained. The metadata information includes column name, column type and column comment. Name of the table as defined in the metastore. You can specify the Hive-specific file_format and row_format using the OPTIONS clause, which is a case-insensitive string map. Databricks/Spark SQL - how to fetch data in a map type field. For example, for Delta tables, you can see the If I want to get these same details on a previous version, how can I do that? November 01, 2022. Number of the files in the latest version of the table. DESCRIBE FUNCTION - Azure Databricks - Databricks SQL The metadata information includes column name, column type and column comment. Applies to: Databricks SQL Databricks Runtime. information such as Partition Parameters and Partition Statistics. Send us feedback We are happy to announce improved support for statistical and mathematical functions in the upcoming 1.4 release. Each operation that modifies a Delta Lake table creates a new table version. | Privacy Policy | Terms of Use, Review Delta Lake table details with describe detail. Number of files that were added as a result of the restore. The operations are returned in reverse chronological order. python - Databricks and polars lazy eval - Stack Overflow Making statements based on opinion; back them up with references or personal experience. The metadata information includes the function name, implementing class and the usage details. Time taken to scan the files for matches. 1 Answer Sorted by: 1 I was able to figure out the issue, while initializing the SparkSession we need to add a couple of configs. Shows information for all tables matching the given regular expression. Databricks is a Big Data Analytics company that was founded by one of the creators of Apache Spark. The regular expression pattern used to filter out unwanted tables. If function_name is qualified with An optional parameter that specifies the column name that needs to be described. How to retrieve a column value from DESCRIBE DETAIL , Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Table version generated by the operation. Returns all the tables for an optionally specified schema. ), User-defined commit metadata if it was specified, WRITE, CREATE TABLE AS SELECT, REPLACE TABLE AS SELECT, COPY INTO. AddFile(/path/to/file-1, dataChange = true), (name = Viktor, age = 29, (name = George, age = 55), AddFile(/path/to/file-2, dataChange = true), AddFile(/path/to/file-3, dataChange = false), RemoveFile(/path/to/file-1), RemoveFile(/path/to/file-2), (No records as Optimize compaction does not change the data in the table), RemoveFile(/path/to/file-3), AddFile(/path/to/file-1, dataChange = true), AddFile(/path/to/file-2, dataChange = true), (name = Viktor, age = 29), (name = George, age = 55), (name = George, age = 39). - Community Bot Dec 8, 2021 at 13:59 Add a comment 1 Answer Sorted by: 0 this method worked All rights reserved. The DESCRIBE DETAIL functionality returns a dataframe with 1 row, but isn't handled as a proper table in Spark SQL using databricks as of now, but you can do it via temp view as @axel-r pointed out: df = spark.sql ("""DESCRIBE DETAIL database_name.table_name""") df.createOrReplaceTempView ("details") %sql SELECT lastModified FROM details Does the conduit for a wall oven need to be pulled inside the cabinet? Syntax concurrently. Apache, Apache Spark, Spark, and the Spark logo are trademarks of the Apache Software Foundation. Minimum version of readers (according to the log protocol) that can read the table. Time travel has many use cases, including: Delta Lake supports querying previous table versions based on timestamp or table version (as recorded in the transaction log). Total size in bytes of the files removed from the target table if a previous Delta table was replaced. | Privacy Policy | Terms of Use, Privileges and securable objects in Unity Catalog, Privileges and securable objects in the Hive metastore, INSERT OVERWRITE DIRECTORY with Hive format, Language-specific introductions to Databricks. Databricks Delta Tables: A Comprehensive Guide 101 - Hevo Data restored_files_size: Total size in bytes of the files that are restored. The default is interval 30 days. Assume that spark would be overhead and I want to be as memory efficient and . Noise cancels but variance sums - contradiction? In the preceding example, the RESTORE command results in updates that were already seen when reading the Delta table version 0 and 1. A string literal to describe the table. Take a medium size database table stored in some azure sql server as source. for partitions. Extreme amenability of topological groups and invariant means. See Review Delta Lake table details with describe detail for the detail schema. Databricks runs on top of your existing data lake and is fully compatible with Apache Spark APIs. Statistics is an important part of everyday data science. How do I troubleshoot a zfs dataset that the server when the server can't agree if it's mounted or not? The output of this operation has only one row with the following schema.