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Bug 798112 - An error occurred while processing mysql ...

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A "Feature" of MYSQL is that it allows C-style backslash escapes
in string constants and replaces them with the actual character
(e.g. \n is converted to 0x0a). This causes round trip problems
if the escape is one of the allowed ones and a MYSQL error if it
isn't.

Disable the feature so that MYSQL follows the SQL standard.
This commit is contained in:
John Ralls
2021-02-07 13:45:59 -08:00
parent fe4f9ed64a
commit ba0e412815
1 changed files with 14 additions and 5 deletions
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19
libgnucash/backend/dbi/gnc-backend-dbi.cpp
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@@ -571,12 +571,21 @@ adjust_sql_options (dbi_conn connection)
return;
}
PINFO("Initial sql_mode: %s", str.c_str());
if(str.find(SQL_OPTION_TO_REMOVE) == std::string::npos)
return;
if(str.find(SQL_OPTION_TO_REMOVE) != std::string::npos)
str = adjust_sql_options_string(str);
std::string adjusted_str{adjust_sql_options_string(str)};
PINFO("Setting sql_mode to %s", adjusted_str.c_str());
std::string set_str{"SET sql_mode='" + std::move(adjusted_str) + "'"};
//https://bugs.gnucash.org/show_bug.cgi?id=798112
const char* backslash_option{"NO_BACKSLASH_ESCAPES"};
if (str.find(backslash_option) == std::string::npos)
{
if (!str.empty())
str.append(",");
str.append(backslash_option);
}
PINFO("Setting sql_mode to %s", str.c_str());
std::string set_str{"SET sql_mode='" + std::move(str) + "'"};
dbi_result set_result = dbi_conn_query(connection,
set_str.c_str());
if (set_result)