Query information about tables

Prerequisites

A Tablestore client is initialized. For more information, see Initialize a Tablestore client.

Example

The following sample code provides an example on how to execute the describe test_table statement to query the information about test_table:

def get_table_desc(client):
    query = 'describe test_table'
    rowlist, _, _ = client.exe_sql_query(query)
    ret = []
    for row in rowlist:
        ret.append(row.attribute_columns)
    print(ret)

The following output is returned:

[[('Field', 'pk'), ('Type', 'varchar(1024)'), ('Null', 'NO'), ('Key', 'PRI'), ('Default', None), ('Extra', '')],
[('Field', 'long_value'), ('Type', 'bigint(20)'), ('Null', 'YES'), ('Key', ''), ('Default', None), ('Extra', '')],
[('Field', 'double_value'), ('Type', 'double'), ('Null', 'YES'), ('Key', ''), ('Default', None), ('Extra', '')],
[('Field', 'string_value'), ('Type', 'mediumtext'), ('Null', 'YES'), ('Key', ''), ('Default', None), ('Extra', '')],
[('Field', 'bool_value'), ('Type', 'tinyint(1)'), ('Null', 'YES'), ('Key', ''), ('Default', None), ('Extra', '')]]