由于某些原因，我无法在返回列表中包括“唯一”列。有什么建议？
该查询有效：
SELECT
m.tbl_name as table_name,
il.name as key_name,
ii.name as column_name,
case il.origin when 'pk' then 1 else 0 END as is_primary,
il.partial,
il.seq as seq_in_index
FROM sqlite_master AS m,
pragma_index_list(m.name) AS il,
pragma_index_info(il.name) AS ii
WHERE
m.type = 'table'
但是此查询失败
SELECT
m.tbl_name as table_name,
il.name as key_name,
ii.name as column_name,
case il.origin when 'pk' then 1 else 0 END as is_primary,
case il.unique when 1 then 1 else 0 END as is_unique,
il.partial,
il.seq as seq_in_index
FROM sqlite_master AS m,
pragma_index_list(m.name) AS il,
pragma_index_info(il.name) AS ii
WHERE
m.type = 'table'
对于SQLite（和其他数据库），它unique是一个关键字（保留字），因此必须将其用反引号或方括号或双引号引起来：
case il.[unique] when 1 then 1 else 0 END as is_unique
但您也可以这样写：
il.[unique] as is_unique
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我来说两句