From e378783811b2ace2379becefd1e479ce840f2850 Mon Sep 17 00:00:00 2001 From: Bill King Date: Wed, 29 Apr 2009 13:42:38 +1000 Subject: Fixes performance degradation from precision fix in 4.5.1 Alleviates the performance hit of querying the database except when necessary, try and use XSQLVAR as much as possible, except for floating point fields. Task-number: 252426 --- src/sql/drivers/ibase/qsql_ibase.cpp | 40 ++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/src/sql/drivers/ibase/qsql_ibase.cpp b/src/sql/drivers/ibase/qsql_ibase.cpp index 0705722..9eeb41d 100644 --- a/src/sql/drivers/ibase/qsql_ibase.cpp +++ b/src/sql/drivers/ibase/qsql_ibase.cpp @@ -1270,27 +1270,27 @@ QSqlRecord QIBaseResult::record() const v = d->sqlda->sqlvar[i]; QSqlField f(QString::fromLatin1(v.aliasname, v.aliasname_length).simplified(), qIBaseTypeName2(v.sqltype, v.sqlscale < 0)); - QSqlQuery q(new QIBaseResult(d->db)); - q.setForwardOnly(true); - q.exec(QLatin1String("select b.RDB$FIELD_PRECISION, b.RDB$FIELD_SCALE, b.RDB$FIELD_LENGTH, a.RDB$NULL_FLAG " - "FROM RDB$RELATION_FIELDS a, RDB$FIELDS b " - "WHERE b.RDB$FIELD_NAME = a.RDB$FIELD_SOURCE " - "AND a.RDB$RELATION_NAME = '") + QString::fromAscii(v.relname, v.relname_length).toUpper() + QLatin1String("' " - "AND a.RDB$FIELD_NAME = '") + QString::fromAscii(v.sqlname, v.sqlname_length).toUpper() + QLatin1String("' ")); - if(q.first()) { - if(v.sqlscale < 0) { - f.setLength(q.value(0).toInt()); - f.setPrecision(qAbs(q.value(1).toInt())); - } else { - f.setLength(q.value(2).toInt()); - f.setPrecision(0); + f.setLength(v.sqllen); + f.setPrecision(qAbs(v.sqlscale)); + f.setRequiredStatus((v.sqltype & 1) == 0 ? QSqlField::Required : QSqlField::Optional); + if(v.sqlscale < 0) { + QSqlQuery q(new QIBaseResult(d->db)); + q.setForwardOnly(true); + q.exec(QLatin1String("select b.RDB$FIELD_PRECISION, b.RDB$FIELD_SCALE, b.RDB$FIELD_LENGTH, a.RDB$NULL_FLAG " + "FROM RDB$RELATION_FIELDS a, RDB$FIELDS b " + "WHERE b.RDB$FIELD_NAME = a.RDB$FIELD_SOURCE " + "AND a.RDB$RELATION_NAME = '") + QString::fromAscii(v.relname, v.relname_length).toUpper() + QLatin1String("' " + "AND a.RDB$FIELD_NAME = '") + QString::fromAscii(v.sqlname, v.sqlname_length).toUpper() + QLatin1String("' ")); + if(q.first()) { + if(v.sqlscale < 0) { + f.setLength(q.value(0).toInt()); + f.setPrecision(qAbs(q.value(1).toInt())); + } else { + f.setLength(q.value(2).toInt()); + f.setPrecision(0); + } + f.setRequiredStatus(q.value(3).toBool() ? QSqlField::Required : QSqlField::Optional); } - f.setRequiredStatus(q.value(3).toBool() ? QSqlField::Required : QSqlField::Optional); - } - else { - f.setLength(0); - f.setPrecision(0); - f.setRequiredStatus(QSqlField::Unknown); } f.setSqlType(v.sqltype); rec.append(f); -- cgit v0.12