PolarDB-X mendukung indeks sekunder global. Bagian ini menjelaskan cara mengeksekusi pernyataan SHOW GLOBAL INDEX untuk melihat indeks sekunder global yang telah dibuat atau sedang dalam proses pembuatan.
Sintaksis
SHOW GLOBAL {INDEX | INDEXES} [FROM [schema_name.]tbl_name]schema_name dan tbl_name bersifat opsional, digunakan untuk memfilter nama tabel atau melihat informasi tentang tabel di database lain.
SHOW GLOBAL INDEX; # Meminta indeks sekunder global dari semua tabel di database saat ini.
SHOW GLOBAL INDEX FROM xxx_tb; # Meminta indeks sekunder global dari tabel xxx_tb di database saat ini.
SHOW GLOBAL INDEX FROM xxx_db.xxx_tb; # Meminta indeks sekunder global dari tabel xxx_tb di database xxx_db. Pernyataan ini dieksekusi untuk menjalankan kueri lintas database.Contoh
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 baris dalam set (0,01 detik)Tabel 1. Deskripsi kolom
Kolom | Deskripsi |
SCHEMA | Nama database. |
TABLE | Nama tabel. |
NON_UNIQUE | Menunjukkan apakah indeks adalah indeks sekunder global unik. Nilai valid:
|
KEY_NAME | Nama indeks. |
INDEX_NAMES | Kolom kunci indeks. |
COVERING_NAMES | Kolom penutup. |
INDEX_TYPE | Tipe indeks. Nilai valid:
|
DB_PARTITION_KEY | Kunci shard database. |
DB_PARTITION_POLICY | Fungsi sharding database. |
DB_PARTITION_COUNT | Jumlah shard database. |
TB_PARTITION_KEY | Kunci shard tabel. |
TB_PARTITION_POLICY | Fungsi sharding tabel. |
TB_PARTITION_COUNT | Jumlah shard tabel. |
STATUS | Status indeks. Nilai valid:
Catatan
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