When you drop an external table in Hive, only the metadata associated with the table is deleted from the Hive metastore. The underlying data in the external storage system that the table was pointing to is not affected by the drop operation. This is because external tables in Hive are just pointers to data stored …
In Hive, when you create a table, it is stored in a default location or directory in the Hadoop Distributed File System (HDFS). The default location for a table is usually under the user/hive/warehouse directory, with the table name as the subdirectory. The default location can be changed by modifying the hive.metastore.warehouse.dir property in the …
Section 7:65. Specifying Location for Hive Tables Read More »
In Hive, an external table is a table that points to data that is stored outside of the Hive warehouse directory. This means that the data is not managed by Hive, and it can be modified or deleted outside of Hive. To create an external table in Hive, you can follow these steps: 1.Create the …
When loading data into a Hive table using LOAD DATA INPATH or LOAD DATA LOCAL INPATH, you can also choose to overwrite or append the data in the table, similar to the INSERT statements. To overwrite the data in the table, you can use the OVERWRITE keyword in your LOAD DATA statement. For example: LOAD …
Section 7:64. Loading the Data into Hive Tables – Overwrite vs Append Read More »
To load data into a Hive table from HDFS, you can follow these steps: Create a table in Hive with the appropriate schema to match your data. You can do this using the CREATE TABLE statement. For example: 2. Load the data into the Hive table using the LOAD DATA INPATH statement. For example: The …
Section 7:63. Loading the Data into Hive Table from HDFS Read More »
To load data from a local file system into a Hive table, you can use the following steps: Create an external table in Hive with the appropriate schema to match your data. You can do this using the CREATE EXTERNAL TABLE statement. Move your data files to a location that can be accessed by the …
Section 7:62. Loading the Data into Hive Table from Local file system Read More »
