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SQL/MySQL: Fix compilation with MySQL 8.3

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With MySQL 8.3 mysql_fetch_field() was removed which was used in
QMYSQLDriver::record(). There is no real replacement function so we
use 'SELECT * from table LIMIT 0' to retrieve the schema information.
Additionally mysql_stmt_bind_param() was deprecated and needs to be
replaced by mysql_stmt_bind_named_param().

[ChangeLog][SQL][MySQL] Fixed compilation with MySQL 8.3.

Pick-to: 6.5 6.2 5.15
Fixes: QTBUG-121183
Change-Id: I149836bd5674d0784255baf416d437c424992f20
Reviewed-by: silverqx <silver.zachara@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit 41c842d3f7eecdf736d26026427033791586c83a)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit b9bcaae2266ec531d38552ea945deff0a6c58e7b)
This commit is contained in:
Christian Ehrlicher 2024-01-19 16:00:31 +01:00 committed by Qt Cherry-pick Bot
parent c8c7dabb03
commit a619b6dd41
1 changed files with 11 additions and 17 deletions
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28
src/plugins/sqldrivers/mysql/qsql_mysql.cpp
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@ -919,9 +919,8 @@ bool QMYSQLResult::exec()
return false;
}
if (mysql_stmt_param_count(d->stmt) > 0 &&
mysql_stmt_param_count(d->stmt) == (uint)values.size()) {
const unsigned long paramCount = mysql_stmt_param_count(d->stmt);
if (paramCount > 0 && paramCount == static_cast<size_t>(values.size())) {
nullVector.resize(values.size());
for (qsizetype i = 0; i < values.size(); ++i) {
const QVariant &val = boundValues().at(i);
@ -1003,7 +1002,11 @@ bool QMYSQLResult::exec()
}
}
#if defined(MARIADB_VERSION_ID) || MYSQL_VERSION_ID < 80300
r = mysql_stmt_bind_param(d->stmt, d->outBinds);
#else
r = mysql_stmt_bind_named_param(d->stmt, d->outBinds, paramCount, nullptr);
#endif
if (r != 0) {
setLastError(qMakeStmtError(QCoreApplication::translate("QMYSQLResult",
"Unable to bind value"), QSqlError::StatementError, d->stmt));
@ -1472,21 +1475,12 @@ QSqlIndex QMYSQLDriver::primaryIndex(const QString &tablename) const
QSqlRecord QMYSQLDriver::record(const QString &tablename) const
{
Q_D(const QMYSQLDriver);
const QString table = stripDelimiters(tablename, QSqlDriver::TableName);
QSqlRecord info;
if (!isOpen())
return info;
MYSQL_RES *r = mysql_list_fields(d->mysql, table.toUtf8().constData(), nullptr);
if (!r)
return info;
MYSQL_FIELD *field;
while ((field = mysql_fetch_field(r)))
info.append(qToField(field));
mysql_free_result(r);
return info;
return {};
QSqlQuery i(createResult());
QString stmt("SELECT * FROM %1 LIMIT 0"_L1);
i.exec(stmt.arg(escapeIdentifier(tablename, QSqlDriver::TableName)));
return i.record();
}
QVariant QMYSQLDriver::handle() const