PostgreSQL 转义特殊字符
PostgreSQL About 853 wordsE''
select E'$\abcd', E'abcd\'';
输出
postgres=# select E'$\abcd', E'abcd\'';
?column? | ?column?
----------+----------
$abcd | abcd'
(1 row)
'
select '''abcd';
输出
postgres=# select '''abcd';
?column?
----------
'abcd
(1 row)
$$
select $$abcd$$, $$'abcd$$, $$\'abcd$$, $$$abcd$$;
输出
postgres=# select $$abcd$$, $$'abcd$$, $$\'abcd$$, $$$abcd$$;
?column? | ?column? | ?column? | ?column?
----------+----------+----------+----------
abcd | 'abcd | \'abcd | $abcd
(1 row)
\
默认没有转义功能,默认standard_conforming_strings = on
show standard_conforming_strings;
SET standard_conforming_strings = on;
SET standard_conforming_strings = off;
当该参数的值为off
时就可以直接使用反斜杠作为转义字符里
select '\'abc';
MyBatis
select * from app_version where #{keywords} = ANY(string_to_array(program_language, ','));
参考
https://www.postgresql.org/docs/current/sql-syntax-lexical.html
Views: 1,203 · Posted: 2023-11-16
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