bgdn: Разликата между 0 и nil/null

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Разликата между 0 и nil/null

Apr 05 2019, 02:32

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aviatrix

empty string vs null

Apr 05 2019, 11:16

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DB Queries: 9 (0.003s) | CACHE Queries: 15 (0.0011s) | Script Execution Time: 0.006 | Memory usage: 0.86MB | Server Load Average: 0.05, 0.05, 0.06

0.00024	SELECT * FROM posts WHERE id<"1471459" AND user_id="5794" ORDER BY id DESC LIMIT 1
0.00024	SELECT id, type, data FROM posts_attachments WHERE post_id="1471461" LIMIT 1
0.00028	SELECT * FROM posts WHERE id>"1471459" AND user_id="5794" ORDER BY id ASC LIMIT 1
0.00023	SELECT id FROM groups WHERE is_public=0
0.00033	SELECT * FROM posts_comments WHERE post_id="1471459" ORDER BY id ASC
0.00026	SELECT id, type, data FROM posts_attachments WHERE post_id="1471459" LIMIT 1
0.00027	SELECT * FROM posts WHERE id="1471459" LIMIT 1
0.00025	SELECT * FROM settings
0.00095	CONNECT 49.12.223.183:9906