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d09aec7a15
Shorten some VARCHAR attributes to a more reasonable length. INNODB_METRICS: Rename the column STATUS to ENABLED, and make it Boolean. Replace with INT(1) many Boolean attributes that were declared as VARCHAR containing 'NO','YES','disabled','enabled','Uninitialized','Initialized'. Replace some VARCHAR attributes with ENUM. Replace some BIGINT with INT when 32 bits are sufficient. Remove INNODB_SYS_TABLESPACES.SPACE_TYPE. The type of a tablespace can be derived from the tablespace ID. A fixed number is used for the system tablespace and the temporary tablespace. All other tablespaces are single-table or single-partition tablespaces. i_s_locks_row_t::lock_type, lock_get_type_str(): Remove. This is a redundant field. Table and record locks can be distinguished by whether i_s_locks_row_t::lock_index is NULL. fill_trx_row(): Do not unnecessarily copy the constant strings that trx->op_info is pointing to. i_s_locks_row_t::lock_mode: Replace string with integer. lock_get_mode_str(), lock_get_trx_id(), lock_get_trx(): Remove. field_store_ulint(): Remove.
20 lines
1,023 B
Text
20 lines
1,023 B
Text
set global innodb_stats_auto_recalc=off;
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CREATE TABLE t1 (i int) ENGINE=InnoDB;
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SELECT NAME, STATS_INITIALIZED, NUM_ROWS, MODIFIED_COUNTER FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS WHERE NAME = 'test/t1';
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NAME STATS_INITIALIZED NUM_ROWS MODIFIED_COUNTER
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test/t1 1 0 0
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INSERT INTO t1 VALUES (1);
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INSERT INTO t1 VALUES (2);
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SELECT NAME, STATS_INITIALIZED, NUM_ROWS, MODIFIED_COUNTER FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS WHERE NAME = 'test/t1';
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NAME STATS_INITIALIZED NUM_ROWS MODIFIED_COUNTER
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test/t1 1 2 2
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DELETE FROM t1 WHERE i = 1;
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SELECT NAME, STATS_INITIALIZED, NUM_ROWS, MODIFIED_COUNTER FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS WHERE NAME = 'test/t1';
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NAME STATS_INITIALIZED NUM_ROWS MODIFIED_COUNTER
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test/t1 1 1 3
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UPDATE t1 SET i = 4 WHERE i = 2;
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SELECT NAME, STATS_INITIALIZED, NUM_ROWS, MODIFIED_COUNTER FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS WHERE NAME = 'test/t1';
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NAME STATS_INITIALIZED NUM_ROWS MODIFIED_COUNTER
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test/t1 1 1 4
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DROP TABLE t1;
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set global innodb_stats_auto_recalc=default;
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