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MDEV-6138 show sysvar's help in I_S tables

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INFORMATION_SCHEMA.SYSTEM_VARIABLES
This commit is contained in:
Sergei Golubchik
2014-09-03 20:16:51 +02:00
parent beb2422ad8
commit 513f5840f8
36 changed files with 12327 additions and 73 deletions
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2
sql/create_options.cc
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@ -331,7 +331,7 @@ bool parse_option_list(THD* thd, handlerton *hton, void *option_struct_arg,
char buf[256];
String sbuf(buf, sizeof(buf), system_charset_info), *str;
if ((str= sysvar->val_str(&sbuf, thd, OPT_SESSION, 0)))
if ((str= sysvar->val_str(&sbuf, thd, OPT_SESSION, &null_lex_str)))
{
LEX_STRING name= { const_cast<char*>(opt->name), opt->name_length };
default_val.str= strmake_root(root, str->ptr(), str->length());