PolarDB-X supports global secondary indexes. This topic describes how to execute the SHOW GLOBAL INDEX statement to view global secondary indexes that are created or are being created.
Syntax
SHOW GLOBAL {INDEX | INDEXES} [FROM [schema_name.]tbl_name]schema_name and tbl_name are optional and are used to filter table names or view the information about tables
in other databases.
SHOW GLOBAL INDEX; # Queries the global secondary indexes of all tables in the current database.
SHOW GLOBAL INDEX FROM xxx_tb; # Queries the global secondary index of the xxx_tb table in the current database.
SHOW GLOBAL INDEX FROM xxx_db.xxx_tb; # Queries the global secondary index of the xxx_tb table in the xxx_db database. This statement is executed to run cross-database queries.Examples
SHOW GLOBAL INDEX;
+---------------------+----------------------+------------+-------------------------------+----------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------------+---------------------+--------------------+------------------+---------------------+--------------------+----------+
| SCHEMA | TABLE | NON_UNIQUE | KEY_NAME | INDEX_NAMES | COVERING_NAMES | INDEX_TYPE | DB_PARTITION_KEY | DB_PARTITION_POLICY | DB_PARTITION_COUNT | TB_PARTITION_KEY | TB_PARTITION_POLICY | TB_PARTITION_COUNT | STATUS |
+---------------------+----------------------+------------+-------------------------------+----------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------------+---------------------+--------------------+------------------+---------------------+--------------------+----------+
| XXXX_DRDS_LOCAL_APP | full_gsi_ddl_renamed | 1 | g_i_c_ddl_c_blob_long_renamed | c_blob_long | id, c_bit_1, c_bit_8, c_bit_16, c_bit_32, c_bit_64, c_tinyint_1, c_tinyint_1_un, c_tinyint_4, c_tinyint_4_un, c_tinyint_8, c_tinyint_8_un, c_smallint_16, c_smallint_16_un, c_mediumint_1, c_mediumint_24, c_mediumint_24_un, c_int_1, c_int_32, c_int_32_un, c_bigint_1, c_bigint_64, c_bigint_64_un, c_decimal, c_decimal_pr, c_float, c_float_pr, c_float_un, c_double, c_double_pr, c_double_un, c_date, c_datetime, c_datetime_3, c_datetime_6, c_timestamp_1, c_timestamp_3, c_time, c_time_1, c_time_3, c_time_6, c_year, c_year_4, c_char, c_varchar, c_binary, c_varbinary, c_blob_tiny, c_blob_medium, c_text_tiny, c_text, c_text_medium, c_text_long, c_enum, c_set, c_json, c_point, c_linestring, c_polygon, c_multipoint, c_multilinestring, c_multipolygon, c_geometrycollection, c_geometory | NULL | c_blob_long | HASH | 4 | c_blob_long | HASH | 3 | PUBLIC |
| XXXX_DRDS_LOCAL_APP | full_gsi_ddl_renamed | 1 | g_i_c_ddl_c_mediumint_1 | c_mediumint_1 | id, c_bit_1, c_bit_8, c_bit_16, c_bit_32, c_bit_64, c_tinyint_1, c_tinyint_1_un, c_tinyint_4, c_tinyint_4_un, c_tinyint_8, c_tinyint_8_un, c_smallint_16, c_smallint_16_un, c_mediumint_24, c_mediumint_24_un, c_int_1, c_int_32, c_int_32_un, c_bigint_1, c_bigint_64, c_bigint_64_un, c_decimal, c_decimal_pr, c_float, c_float_pr, c_float_un, c_double, c_double_pr, c_double_un, c_date, c_datetime, c_datetime_3, c_datetime_6, c_timestamp_1, c_timestamp_3, c_time, c_time_1, c_time_3, c_time_6, c_year, c_year_4, c_char, c_varchar, c_binary, c_varbinary, c_blob_tiny, c_blob_medium, c_blob_long, c_text_tiny, c_text, c_text_medium, c_text_long, c_enum, c_set, c_json, c_point, c_linestring, c_polygon, c_multipoint, c_multilinestring, c_multipolygon, c_geometrycollection, c_geometory, c_smallint_1, c_timestamp_6 | NULL | c_mediumint_1 | HASH | 4 | c_mediumint_1 | HASH | 3 | PUBLIC |
| XXXX_DRDS_LOCAL_APP | full_gsi_ddl_renamed | 1 | g_i_c_ddl_c_smallint_16_un | c_smallint_16_un, c_time_1 | id, c_bit_1, c_bit_8, c_bit_16, c_bit_32, c_bit_64, c_tinyint_1, c_tinyint_1_un, c_tinyint_4, c_tinyint_4_un, c_tinyint_8, c_tinyint_8_un, c_smallint_16, c_mediumint_1, c_mediumint_24, c_mediumint_24_un, c_int_1, c_int_32, c_int_32_un, c_bigint_1, c_bigint_64, c_bigint_64_un, c_decimal, c_decimal_pr, c_float, c_float_pr, c_float_un, c_double, c_double_pr, c_double_un, c_date, c_datetime, c_datetime_3, c_datetime_6, c_timestamp_1, c_timestamp_3, c_time, c_time_3, c_time_6, c_year, c_year_4, c_char, c_varchar, c_binary, c_varbinary, c_blob_tiny, c_blob_medium, c_blob_long, c_text_tiny, c_text, c_text_medium, c_text_long, c_enum, c_set, c_json, c_point, c_linestring, c_polygon, c_multipoint, c_multilinestring, c_multipolygon, c_geometrycollection, c_geometory | NULL | c_smallint_16_un | HASH | 4 | c_smallint_16_un | HASH | 3 | PUBLIC |
| XXXX_DRDS_LOCAL_APP | t_order | 0 | g_i_seller | seller_id | id, order_id | HASH | seller_id | HASH | 4 | seller_id | HASH | 2 | CREATING |
+---------------------+----------------------+------------+-------------------------------+----------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------------+---------------------+--------------------+------------------+---------------------+--------------------+----------+
4 rows in set (0.01 sec)| Column | Description |
|---|---|
| SCHEMA | The database name. |
| TABLE | The table name. |
| NON_UNIQUE | Indicates whether the index is a unique global secondary index. Valid values:
|
| KEY_NAME | The index name. |
| INDEX_NAMES | The index key column. |
| COVERING_NAMES | The covering column. |
| INDEX_TYPE | The index type. Valid values:
|
| DB_PARTITION_KEY | The database shard key. |
| DB_PARTITION_POLICY | The database sharding function. |
| DB_PARTITION_COUNT | The number of database shards. |
| TB_PARTITION_KEY | The table shard key. |
| TB_PARTITION_POLICY | The table sharding function. |
| TB_PARTITION_COUNT | The number of table shards. |
| STATUS | The state of the index. Valid values:
|