Index settings and status
SHOW INDEX STATUS is an SQL statement that displays various per-index statistics.
The syntax is:
SHOW INDEX index_name STATUSDisplayed statistics include:
indexed_documentsandindexed_bytes: number of the documents indexed and their text size in bytes, respectively.field_tokens_XXX: sums of per-field lengths (in tokens) over the entire index (that is used internally inBM25AandBM25Ffunctions for ranking purposes). Only available for indexes built withindex_field_lengths=1.ram_bytes: total size (in bytes) of the RAM-resident index portion.query_time_*: query execution time statistics of last 1 minute, 5 minutes, 15 minutes and total since server start; data is encapsulated as a JSON object which includes the number of queries and min, max, avg, 95 and 99 percentile values.found_rows_*: statistics of rows found by queries; provided for last 1 minute, 5 minutes, 15 minutes and total since server start; data is encapsulated as a JSON object which includes the number of queries and min, max, avg, 95 and 99 percentile values.
- SQL
- PHP
📋
mysql> SHOW INDEX products STATUS;Response
+--------------------------+--------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+--------------------------+--------------------------------------------------------------------------------------------------------+
| index_type | rt |
| indexed_documents | 3 |
| indexed_bytes | 0 |
| ram_bytes | 6678 |
| disk_bytes | 611 |
| ram_chunk | 990 |
| ram_chunk_segments_count | 2 |
| disk_chunks | 0 |
| mem_limit | 134217728 |
| ram_bytes_retired | 0 |
| tid | 15 |
| tid_saved | 8 |
| query_time_1min | {"queries":1, "avg_sec":0.001, "min_sec":0.001, "max_sec":0.001, "pct95_sec":0.001, "pct99_sec":0.001} |
| query_time_5min | {"queries":1, "avg_sec":0.001, "min_sec":0.001, "max_sec":0.001, "pct95_sec":0.001, "pct99_sec":0.001} |
| query_time_15min | {"queries":1, "avg_sec":0.001, "min_sec":0.001, "max_sec":0.001, "pct95_sec":0.001, "pct99_sec":0.001} |
| query_time_total | {"queries":1, "avg_sec":0.001, "min_sec":0.001, "max_sec":0.001, "pct95_sec":0.001, "pct99_sec":0.001} |
| found_rows_1min | {"queries":1, "avg":3, "min":3, "max":3, "pct95":3, "pct99":3} |
| found_rows_5min | {"queries":1, "avg":3, "min":3, "max":3, "pct95":3, "pct99":3} |
| found_rows_15min | {"queries":1, "avg":3, "min":3, "max":3, "pct95":3, "pct99":3} |
| found_rows_total | {"queries":1, "avg":3, "min":3, "max":3, "pct95":3, "pct99":3} |
+--------------------------+--------------------------------------------------------------------------------------------------------+
20 rows in set (0.00 sec)SHOW INDEX SETTINGS is an SQL statement that displays per-index settings in a format that is compatible with the config file.
The syntax is:
SHOW INDEX index_name[.N | CHUNK N] SETTINGSOutput is similar to the --dumpconfig option of the indextool utility. The report provides a breakdown of all the index settings, including tokenizer and dictionary options.
- SQL
SQL
📋
SHOW INDEX forum SETTINGS;Response
+---------------+-----------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+---------------+-----------------------------------------------------------------------------------------------------------+
| settings | min_prefix_len = 3
charset_table = 0..9, A..Z->a..z, _, -, a..z, U+410..U+42F->U+430..U+44F, U+430..U+44F |
+---------------+-----------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)You may also specify a particular chunk number to view the settings of a particular chunk of an RT index. The number is 0-based.
- SQL
SQL
📋
SHOW INDEX forum CHUNK 0 SETTINGS;Response
+---------------+-----------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+---------------+-----------------------------------------------------------------------------------------------------------+
| settings | min_prefix_len = 3
charset_table = 0..9, A..Z->a..z, _, -, a..z, U+410..U+42F->U+430..U+44F, U+430..U+44F |
+---------------+-----------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)