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Add a debugger helper function that does this:

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(gdb) p dbug_print_table_row(table)
  $33 = "SUBQUERY2_t1(col_int_key,col_varchar_nokey)=(7,c)"
This commit is contained in:
Sergey Petrunya 2014-02-19 17:47:02 +04:00
parent 097b644006
commit 260c802e7d
1 changed files with 79 additions and 0 deletions
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79
sql/filesort.cc
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@ -398,6 +398,84 @@ static uchar *read_buffpek_from_file(IO_CACHE *buffpek_pointers, uint count,
}
#ifndef DBUG_OFF
/* Buffer where record is returned */
char dbug_print_row_buff[512];
/* Temporary buffer for printing a column */
char dbug_print_row_buff_tmp[512];
/*
Print table's current row into a buffer and return a pointer to it.
This is intended to be used from gdb:
(gdb) p dbug_print_table_row(table)
$33 = "SUBQUERY2_t1(col_int_key,col_varchar_nokey)=(7,c)"
(gdb)
Only columns in table->read_set are printed
*/
const char* dbug_print_table_row(TABLE *table)
{
Field **pfield;
String tmp(dbug_print_row_buff_tmp,
sizeof(dbug_print_row_buff_tmp),&my_charset_bin);
String output(dbug_print_row_buff, sizeof(dbug_print_row_buff),
&my_charset_bin);
output.length(0);
output.append(table->alias);
output.append("(");
bool first= true;
for (pfield= table->field; *pfield ; pfield++)
{
if (table->read_set && !bitmap_is_set(table->read_set, (*pfield)->field_index))
continue;
if (first)
first= false;
else
output.append(",");
output.append((*pfield)->field_name? (*pfield)->field_name: "NULL");
}
output.append(")=(");
first= true;
for (pfield= table->field; *pfield ; pfield++)
{
Field *field= *pfield;
if (table->read_set && !bitmap_is_set(table->read_set, (*pfield)->field_index))
continue;
if (first)
first= false;
else
output.append(",");
if (field->is_null())
output.append("NULL");
else
{
if (field->type() == MYSQL_TYPE_BIT)
(void) field->val_int_as_str(&tmp, 1);
else
field->val_str(&tmp);
output.append(tmp.ptr(), tmp.length());
}
}
output.append(")");
return output.c_ptr_safe();
}
/*
Print a text, SQL-like record representation into dbug trace.
@ -446,6 +524,7 @@ static void dbug_print_record(TABLE *table, bool print_rowid)
fprintf(DBUG_FILE, "\n");
DBUG_UNLOCK_FILE;
}
#endif
/**