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field_conv.cc: added comments

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opt_range.cc: modified print_key() so that it doesn't do memory re-allocs when
printing multipart keys over varchar columns. When it did, key printout in 
debug trace was interrupted with my_malloc/free printouts.
This commit is contained in:
Sergey Petrunya
2011-08-17 12:32:15 +04:00
parent 6321619496
commit f240aa4cbf
2 changed files with 15 additions and 1 deletions
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2
sql/opt_range.cc
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@ -13644,7 +13644,6 @@ print_key(KEY_PART *key_part, const uchar *key, uint used_length)
{
char buff[1024];
const uchar *key_end= key+used_length;
String tmp(buff,sizeof(buff),&my_charset_bin);
uint store_length;
TABLE *table= key_part->field->table;
my_bitmap_map *old_sets[2];
@ -13653,6 +13652,7 @@ print_key(KEY_PART *key_part, const uchar *key, uint used_length)
for (; key < key_end; key+=store_length, key_part++)
{
String tmp(buff,sizeof(buff),&my_charset_bin);
Field *field= key_part->field;
store_length= key_part->store_length;