294 lines
7.7 KiB
C++
294 lines
7.7 KiB
C++
/**************************************************************************
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**
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** This file is part of Nut project.
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** https://github.com/HamedMasafi/Nut
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**
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** Nut is free software: you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Nut is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with Nut. If not, see <http://www.gnu.org/licenses/>.
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**
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**************************************************************************/
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#include "sqlservergenerator.h"
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#include "../table.h"
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#include "../tablemodel.h"
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#include <QPoint>
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#include <QRegularExpression>
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NUT_BEGIN_NAMESPACE
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SqlServerGenerator::SqlServerGenerator(Database *parent)
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: SqlGeneratorBase(parent)
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{
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}
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QString SqlServerGenerator::masterDatabaseName(QString databaseName)
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{
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return databaseName.replace(
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QRegularExpression("DATABASE\\=(\\w+)",
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QRegularExpression::CaseInsensitiveOption),
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"DATABASE=");
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}
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QString SqlServerGenerator::fieldType(FieldModel *field)
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{
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QString dbType;
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switch (field->type) {
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case QMetaType::Bool:
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dbType = "BIT";
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break;
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case QMetaType::Char:
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case QMetaType::QChar:
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dbType = "CHAR(1)";
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break;
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case QMetaType::SChar:
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case QMetaType::UChar:
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return "tinyint";
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case QMetaType::Short:
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case QMetaType::UShort:
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return "smallint";
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case QMetaType::UInt:
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case QMetaType::Int:
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dbType = "INT";
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if (field->isAutoIncrement)
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dbType += " IDENTITY(1,1)";
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break;
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case QMetaType::Long:
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case QMetaType::ULong:
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case QMetaType::LongLong:
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case QMetaType::ULongLong:
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return "bigint";
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case QMetaType::Float:
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return "FLOAT(24)";
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case QMetaType::Double:
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return "REAL";
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case QMetaType::QBitArray:
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case QMetaType::QByteArray:
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dbType = "VARBINARY";
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if (field->length)
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dbType.append(" (" + QString::number(field->length) + ")");
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else
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dbType.append(" (MAX)");
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break;
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case QMetaType::QDate:
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dbType = "DATE";
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break;
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case QMetaType::QDateTime:
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dbType = "DATETIME";
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break;
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case QMetaType::QTime:
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dbType = "TIME";
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break;
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case QMetaType::QPoint:
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case QMetaType::QPointF:
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dbType = "TEXT";
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break;
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case QMetaType::QString:
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if (field->length)
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dbType = QString("NVARCHAR(%1)").arg(field->length);
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else
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dbType = "NVARCHAR(MAX)";
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break;
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case QMetaType::QUuid:
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dbType = "UNIQUEIDENTIFIER";
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break;
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case QMetaType::QPolygon:
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case QMetaType::QPolygonF:
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case QMetaType::QSize:
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case QMetaType::QSizeF:
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case QMetaType::QRect:
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case QMetaType::QRectF:
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case QMetaType::QLine:
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case QMetaType::QLineF:
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case QMetaType::QColor:
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case QMetaType::QStringList:
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case QMetaType::QJsonArray:
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case QMetaType::QJsonValue:
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case QMetaType::QJsonObject:
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case QMetaType::QJsonDocument:
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case QMetaType::QUrl:
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return "TEXT";
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default:
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// Q_UNREACHABLE();
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dbType = QString();
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}
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return dbType;
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}
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QString SqlServerGenerator::diff(FieldModel *oldField, FieldModel *newField)
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{
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QString sql = QString();
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if (oldField && newField)
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if (*oldField == *newField)
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return sql;
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if (!newField) {
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sql = "DROP COLUMN " + oldField->name;
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} else {
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if (oldField)
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sql = "MODIFY COLUMN ";
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else
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sql = "ADD ";
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sql.append(fieldDeclare(newField));
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}
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return sql;
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}
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QString SqlServerGenerator::escapeValue(const QVariant &v) const
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{
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switch (v.type()) {
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case QVariant::String:
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case QVariant::Char:
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case QVariant::Polygon:
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case QVariant::PolygonF:
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case QVariant::Size:
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case QVariant::SizeF:
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case QVariant::Rect:
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case QVariant::RectF:
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case QVariant::Line:
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case QVariant::LineF:
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case QVariant::Color:
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case QVariant::StringList:
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// case QVariant::JsonArray:
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// case QVariant::JsonValue:
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// case QVariant::JsonObject:
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// case QVariant::JsonDocument:
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case QVariant::Url:
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return "N" + SqlGeneratorBase::escapeValue(v);
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// case QVariant::Point: {
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// QPoint pt = v.toPoint();
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// return QString("geography::POINT(%1, %2, 4326)").arg(pt.x()).arg(
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// pt.y());
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// }
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// case QVariant::PointF: {
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// QPointF pt = v.toPointF();
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// return QString("geography::POINT(%1, %2, 4326)").arg(pt.x()).arg(
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// pt.y());
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// }
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case QVariant::Time:
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return "'" + v.toTime().toString("HH:mm:ss") + "'";
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case QVariant::Date:
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return "'" + v.toDate().toString("yyyy-MM-dd") + "'";
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case QVariant::DateTime:
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return "'" + v.toDateTime().toString("yyyy-MM-dd HH:mm:ss") + "'";
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default:
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break;
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}
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return SqlGeneratorBase::escapeValue(v);
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}
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QVariant SqlServerGenerator::unescapeValue(const QMetaType::Type &type, const QVariant &dbValue)
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{
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if (type == QMetaType::QDateTime)
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return dbValue.toDateTime();
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if (type == QMetaType::QTime)
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return dbValue.toTime();
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if (type == QMetaType::QDate)
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return dbValue.toDate();
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return SqlGeneratorBase::unescapeValue(type, dbValue);
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}
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void SqlServerGenerator::appendSkipTake(QString &sql, int skip, int take)
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{
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if (skip != -1)
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sql.append(QString(" OFFSET %1 ROWS")
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.arg(skip));
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if (take > 0)
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sql.append(QString(" FETCH %2 %1 ROWS ONLY")
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.arg(take)
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.arg(skip > 1 ? "NEXT" : "FIRST"));
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}
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QString SqlServerGenerator::createConditionalPhrase(const PhraseData *d) const
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{
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if (!d)
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return QString();
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PhraseData::Condition op = d->operatorCond;
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//apply not (!)
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if (d->isNot) {
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if (op < 20)
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op = static_cast<PhraseData::Condition>((op + 10) % 20);
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}
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if (d->type == PhraseData::WithVariant) {
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switch (op) {
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case PhraseData::AddYears:
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case PhraseData::AddYearsDateTime:
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case PhraseData::AddMonths:
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case PhraseData::AddMonthsDateTime:
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case PhraseData::AddDays:
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case PhraseData::AddDaysDateTime:
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case PhraseData::AddHours:
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case PhraseData::AddHoursDateTime:
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case PhraseData::AddMinutes:
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case PhraseData::AddMinutesDateTime:
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case PhraseData::AddSeconds:
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case PhraseData::AddSecondsDateTime:
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return QString("DATEADD(%3, %2, %1)")
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.arg(createConditionalPhrase(d->left),
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d->operand.toString(),
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SqlGeneratorBase::dateTimePartName(op));
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default:
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break;
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}
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}
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if (d->type == PhraseData::WithoutOperand) {
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switch (op) {
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case PhraseData::DatePartYear:
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case PhraseData::DatePartMonth:
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case PhraseData::DatePartDay:
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case PhraseData::DatePartHour:
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case PhraseData::DatePartMinute:
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case PhraseData::DatePartSecond:
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return QString("DATEPART(%2, %1)")
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.arg(createConditionalPhrase(d->left),
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SqlGeneratorBase::dateTimePartName(op));
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default:
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break;
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}
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}
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return SqlGeneratorBase::createConditionalPhrase(d);
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}
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NUT_END_NAMESPACE
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