PolarDB-X 1.0 supports global secondary indexes (GSIs). This topic describes how to use the SHOW GLOBAL INDEX statement to view the GSIs that have been 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 table information in other
databases.
show global index; # Queries the GSIs of all tables in the current database.
show global index from xxx_tb; # Queries the GSI of xxx_tb in the current database.
show global index from xxx_db.xxx_tb; # Queries the GSI of xxx_tb in xxx_db. This is a cross-database query.Examples
mysql> 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 name | Description |
|---|---|
| SCHEMA | The name of the database. |
| TABLE | The name of the table. |
| NON_UNIQUE | Indicates whether the index is a unique GSI. Valid values:
|
| KEY_NAME | The name of the index. |
| INDEX_NAMES | The index 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 current status of the index. Valid values:
|