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Optimize LEX_STRING comparisons

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- Added inline lex_string_cmp() to replace my_strcase_cmp().
- Added inline lex_string_eq to first compares lengths before comparing strings
This commit is contained in:
Michael Widenius
2017-06-18 14:00:28 +03:00
committed by Sergei Golubchik
parent cc77f9882d
commit 25c06f5282
14 changed files with 137 additions and 137 deletions
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10
sql/sql_class.cc
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@ -121,8 +121,8 @@ extern "C" void free_sequence_last(SEQUENCE_LAST_VALUE *entry)
bool Key_part_spec::operator==(const Key_part_spec& other) const
{
return length == other.length &&
!my_strcasecmp(system_charset_info, field_name.str,
other.field_name.str);
!lex_string_cmp(system_charset_info, &field_name,
&other.field_name);
}
/**
@ -249,9 +249,9 @@ bool Foreign_key::validate(List<Create_field> &table_fields)
{
it.rewind();
while ((sql_field= it++) &&
my_strcasecmp(system_charset_info,
column->field_name.str,
sql_field->field_name.str)) {}
lex_string_cmp(system_charset_info,
&column->field_name,
&sql_field->field_name)) {}
if (!sql_field)
{
my_error(ER_KEY_COLUMN_DOES_NOT_EXITS, MYF(0), column->field_name.str);