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MDEV-6109: EXPLAIN JSON

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- Add first testcases
- Don't overquote when printing conditions
- Other small output fixes
This commit is contained in:
Sergei Petrunia
2014-08-09 06:37:56 +04:00
parent 83f0ddc629
commit 33d53c4c24
8 changed files with 100 additions and 20 deletions
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12
sql/sql_explain.cc
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@@ -774,10 +774,17 @@ int Explain_table_access::print_explain(select_result_sink *output, uint8 explai
static void write_item(Json_writer *writer, Item *item)
{
THD *thd= current_thd;
char item_buf[256];
String str(item_buf, sizeof(item_buf), &my_charset_bin);
str.length(0);
item->print(&str ,QT_ORDINARY);
ulonglong save_option_bits= thd->variables.option_bits;
thd->variables.option_bits &= ~OPTION_QUOTE_SHOW_CREATE;
item->print(&str, QT_EXPLAIN);
thd->variables.option_bits= save_option_bits;
writer->add_str(str.c_ptr_safe());
}
@@ -848,7 +855,8 @@ void Explain_table_access::print_explain_json(Json_writer *writer,
writer->add_member("key").add_str(key_str);
/* `used_key_parts` */
writer->add_member("used_key_parts").add_str("TODO");
if (key_str.length())
writer->add_member("used_key_parts").add_str("TODO");
StringBuffer<64> key_len_str;
fill_key_len_str(&key_len_str);