ring_view | std::ring_span
kandi X-RAY | ring_view Summary
kandi X-RAY | ring_view Summary
std::ring_span (SG14, P0059R1)
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QUESTION
I have created view by joining multiple tables to avoid loading time on dynamic query. but its giving the same result by taking more time.
My system configuration is : 8GB RAM i5 Cpu and running this on MySQL 5.7.28. Here is my query :
Reason to create this type of view is: I have generated this query using php loop. cause I need value as a column to everything should be in one view and i can easily access. in less time but not working. if you can suggest some better way to design view or avoid , generating query with help you php loop would be the best solution. Here is a definition of all tables.
GLOBALS : https://pastebin.com/mp4cJf90
GLOBAL_VARIABLE : https://pastebin.com/Z538iku1
mysql_tuner_report : https://pastebin.com/DLbYgJ5Q
Here is mysql config variable: config First :
...ANSWER
Answered 2019-Dec-31 at 15:24If we number your view's LEFT JOINS j1-j6, consider the following observations,
attribute_value tbl has a redundant index,
ADD KEY attribute_id
(aval_id
),
should likely be
ADD KEY attribute_id
(attribute_id
),
to avoid the redundant index and be available for use in j2.
attribute tbl has
category_id
varchar(255) default '0',
should likely be DATATYPE
category_id
int(11) NOT NULL ...,
for use in j6 AND add INDEX for the column.
gemstone_attribute_value tbl has
ADD KEY gemstone_abbribute_id
(g_aval_id
),
that would be a redundant index and likely should be DROPPED.
gemstone_attribute tbl has
gemstone_id
varchar(255) default '0',
should likely be DATATYPE
gemstone_id
int(11) NOT NULL ...,
for use in j5 AND add INDEX for the column,
Your CASE WHEN lines for gv.gem_attr_id = 'nnn' could be without the single quotes to avoid DATATYPE conversions for every compare since gem_attr_id is INT datatype and save CPU cycles.
For additional observations/suggestions, please view my profile to make contact.
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