WordPress数据库错误: [Got error 28 from storage engine]
SHOW FULL COLUMNS FROM `wp_options`

WordPress数据库错误: [Got error 28 from storage engine]
SELECT t.*, tt.*, tr.object_id FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON t.term_id = tt.term_id INNER JOIN wp_term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ('category', 'post_tag', 'post_format') AND tr.object_id IN (153) ORDER BY t.name ASC

shell 判断表达式 – Crazy knowledge base
Crazy knowledge base

shell 判断表达式

文件比较运算符
-e filename     如果 filename存在,则为真     [ -e /var/log/syslog ]
-d filename     如果 filename为目录,则为真     [ -d /tmp/mydir ]
-f filename     如果 filename为常规文件,则为真     [ -f /usr/bin/grep ]
-L filename     如果 filename为符号链接,则为真     [ -L /usr/bin/grep ]
-r filename     如果 filename可读,则为真     [ -r /var/log/syslog ]
-w filename     如果 filename可写,则为真     [ -w /var/mytmp.txt ]
-x filename     如果 filename可执行,则为真     [ -L /usr/bin/grep ]
filename1-nt filename2     如果 filename1比 filename2新,则为真     [ /tmp/install/etc/services -nt /etc/services ]
filename1-ot filename2     如果 filename1比 filename2旧,则为真     [ /boot/bzImage -ot arch/i386/boot/bzImage ]

字符串比较运算符 (请注意引号的使用,这是防止空格扰乱代码的好方法)
-z string     如果 string长度为零,则为真     [ -z “$myvar” ]
-n string     如果 string长度非零,则为真     [ -n “$myvar” ]
string1= string2     如果 string1与 string2相同,则为真     [ “$myvar” = “one two three” ]
string1!= string2     如果 string1与 string2不同,则为真     [ “$myvar” != “one two three” ]

算术比较运算符
num1-eq num2     等于    [ 3 -eq $mynum ]
num1-ne num2     不等于    [ 3 -ne $mynum ]
num1-lt num2     小于    [ 3 -lt $mynum ]
num1-le num2     小于或等于    [ 3 -le $mynum ]
num1-gt num2     大于    [ 3 -gt $mynum ]
num1-ge num2     大于或等于    [ 3 -ge $mynum ]

shell 判断表达式

WordPress数据库错误: [Got error 28 from storage engine]
SELECT t.*, tt.* FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON t.term_id = tt.term_id INNER JOIN wp_term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ('category') AND tr.object_id IN (152) ORDER BY t.name ASC

WordPress数据库错误: [Got error 28 from storage engine]
SELECT t.*, tt.* FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON t.term_id = tt.term_id INNER JOIN wp_term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ('category') AND tr.object_id IN (155) ORDER BY t.name ASC

滚动到顶部