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MDEV-35343 DML debug logging

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Usage:

mtr --mysqld=--debug=d,dml,query:i:o,/tmp/dml.log

Example output:

T@6    : dispatch_command: query: insert into t1 values ('a')
T@6    : handler::ha_write_row: exit: INSERT: t1(a) = 0
T@6    : dispatch_command: query: alter ignore table t1 add unique index (data)
T@6    : handler::ha_write_row: exit: INSERT: t1(a) = 0
T@6    : dispatch_command: query: alter ignore table t1 add unique index (data)
T@6    : handler::ha_write_row: exit: INSERT: t1(a) = 0

T@6    : dispatch_command: query: replace into t1 values ('b'), ('c'), ('a'), ('b')
T@6    : handler::ha_write_row: exit: INSERT: t1(b) = 0
T@6    : handler::ha_write_row: exit: INSERT: t1(c) = 0
T@6    : handler::ha_write_row: exit: INSERT: t1(a) = 121
T@6    : write_record: exit: DELETE: t1(a) = 0
T@6    : handler::ha_write_row: exit: INSERT: t1(a) = 0
T@6    : handler::ha_write_row: exit: INSERT: t1(b) = 121
T@6    : write_record: exit: DELETE: t1(b) = 0
T@6    : handler::ha_write_row: exit: INSERT: t1(b) = 0
This commit is contained in:
Aleksey Midenkov
2025-01-13 15:40:59 +03:00
parent e760a6dc1c
commit e1e1e50bba
3 changed files with 46 additions and 32 deletions
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4
sql/handler.h
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@ -5322,4 +5322,8 @@ bool non_existing_table_error(int error);
int get_select_field_pos(Alter_info *alter_info, int select_field_count,
bool versioned);
#ifndef DBUG_OFF
const char* dbug_print_row(TABLE *table, const uchar *rec, bool print_names= true);
#endif /* DBUG_OFF */
#endif /* HANDLER_INCLUDED */