public override IASTNode VisitAssignment(SqlServerCommandParser.AssignmentContext context)
{
ColumnSegment column = (ColumnSegment)VisitColumnName(context.columnName());
var value = (IExpressionSegment)Visit(context.assignmentValue());
return(new AssignmentSegment(context.Start.StartIndex, context.Stop.StopIndex, column, value));
}
public RenameColumnSegment(int startIndex, int stopIndex, ColumnSegment oldColumnName, ColumnSegment columnName)
{
this._startIndex = startIndex;
this._stopIndex = stopIndex;
OldColumnName = oldColumnName;
ColumnName = columnName;
}
private PredicateSegment CreateInSegment(SqlServerCommandParser.PredicateContext context)
{
ColumnSegment column = (ColumnSegment)Visit(context.bitExpr(0));
PredicateBracketValue predicateBracketValue = CreateBracketValue(context);
return(new PredicateSegment(context.Start.StartIndex, context.Stop.StopIndex, column, new PredicateInRightValue(predicateBracketValue, GetExpressionSegments(context))));
}
public PredicateSegment(int startIndex, int stopIndex, ColumnSegment column, IPredicateRightValue rightValue)
{
_startIndex = startIndex;
_stopIndex = stopIndex;
_column = column;
_rightValue = rightValue;
}
public override IASTNode VisitAssignment(MySqlCommandParser.AssignmentContext ctx)
{
ColumnSegment column = (ColumnSegment)VisitColumnName(ctx.columnName());
IExpressionSegment value = (IExpressionSegment)Visit(ctx.assignmentValue());
return(new AssignmentSegment(ctx.Start.StartIndex, ctx.Stop.StopIndex, column, value));
}
private PredicateSegment CreateBetweenSegment(SqlServerCommandParser.PredicateContext context)
{
ColumnSegment column = (ColumnSegment)Visit(context.bitExpr(0));
IExpressionSegment between = (IExpressionSegment)Visit(context.bitExpr(1));
IExpressionSegment and = (IExpressionSegment)Visit(context.predicate());
return(new PredicateSegment(context.Start.StartIndex, context.Stop.StopIndex, column, new PredicateBetweenRightValue(between, and)));
}
public override IASTNode VisitColumnName(MySqlCommandParser.ColumnNameContext ctx)
{
ColumnSegment result = new ColumnSegment(ctx.Start.StartIndex, ctx.Stop.StopIndex, (IdentifierValue)Visit(ctx.name()));
MySqlCommandParser.OwnerContext owner = ctx.owner();
if (null != owner)
{
result.SetOwner(new OwnerSegment(owner.Start.StartIndex, owner.Stop.StopIndex, (IdentifierValue)Visit(owner.identifier())));
}
return(result);
}
protected void PopulateColumnsSegments()
{
const string QUERY_COLUMNS_SEGMENTS = @"
SELECT
DIMENSION_NAME AS TABLE_NAME,
PARTITION_NAME,
COLUMN_ID AS COLUMN_NAME,
SEGMENT_NUMBER,
TABLE_PARTITION_NUMBER,
RECORDS_COUNT AS SEGMENT_ROWS,
USED_SIZE,
COMPRESSION_TYPE,
BITS_COUNT,
BOOKMARK_BITS_COUNT,
VERTIPAQ_STATE
FROM $SYSTEM.DISCOVER_STORAGE_TABLE_COLUMN_SEGMENTS
WHERE RIGHT ( LEFT ( TABLE_ID, 2 ), 1 ) <> '$'";
var cmd = new AdomdCommand(QUERY_COLUMNS_SEGMENTS, Connection)
{
CommandTimeout = CommandTimeout
};
using (var rdr = cmd.ExecuteReader()) {
while (rdr.Read())
{
string tableName = rdr.GetString(0);
string partitionName = rdr.GetString(1);
string columnDmv1100Id = rdr.GetString(2);
long segmentNumber = rdr.GetInt64(3);
long tablePartitionNumber = rdr.GetInt64(4);
long segmentRows = rdr.GetInt64(5);
long usedSize = (long)rdr.GetDecimal(6);
string compressionType = rdr.GetString(7);
long bitsCount = rdr.GetInt64(8);
long bookmarkBitsCount = rdr.GetInt64(9);
string vertipaqState = rdr.GetString(10);
// Column daxColumn = GetDaxColumnDmv1100Id(tableName, columnDmv1100Id);
ColumnSegment daxColumnSegment = GetDaxColumnSegment(tableName, partitionName, columnDmv1100Id, segmentNumber, tablePartitionNumber);
daxColumnSegment.BitsCount = bitsCount;
daxColumnSegment.BookmarkBitsCount = bookmarkBitsCount;
daxColumnSegment.CompressionType = compressionType;
daxColumnSegment.SegmentRows = segmentRows;
daxColumnSegment.UsedSize = usedSize;
daxColumnSegment.VertipaqState = vertipaqState;
}
}
}
public override IASTNode VisitOrderByItem(SqlServerCommandParser.OrderByItemContext context)
{
OrderDirectionEnum orderDirection = null != context.DESC() ? OrderDirectionEnum.DESC : OrderDirectionEnum.ASC;
if (null != context.columnName())
{
ColumnSegment column = (ColumnSegment)Visit(context.columnName());
return(new ColumnOrderByItemSegment(column, orderDirection));
}
if (null != context.numberLiterals())
{
return(new IndexOrderByItemSegment(context.numberLiterals().Start.StartIndex, context.numberLiterals().Stop.StopIndex,
(int)SqlUtil.GetExactlyNumber(context.numberLiterals().GetText(), 10), orderDirection));
}
return(new ExpressionOrderByItemSegment(context.expr().Start.StartIndex, context.expr().Stop.StopIndex, context.expr().GetText(), orderDirection));
}
public override IASTNode VisitProjection(SqlServerCommandParser.ProjectionContext context)
{
// FIXME :The stop index of project is the stop index of projection, instead of alias.
if (null != context.qualifiedShorthand())
{
var shorthand = context.qualifiedShorthand();
var result = new ShorthandProjectionSegment(shorthand.Start.StartIndex, shorthand.Stop.StopIndex);
IdentifierValue identifier = new IdentifierValue(shorthand.identifier().GetText());
result.SetOwner(new OwnerSegment(shorthand.identifier().Start.StartIndex, shorthand.identifier().Stop.StopIndex, identifier));
return(result);
}
AliasSegment alias = null == context.alias() ? null : (AliasSegment)Visit(context.alias());
if (null != context.columnName())
{
ColumnSegment column = (ColumnSegment)Visit(context.columnName());
ColumnProjectionSegment result = new ColumnProjectionSegment(column);
result.SetAlias(alias);
return(result);
}
return(CreateProjection(context, alias));
}
public ColumnFirstPositionSegment(int startIndex, int stopIndex, ColumnSegment columnName) : base(startIndex, stopIndex, columnName)
{
}
public ColumnOrderByItemSegment(ColumnSegment column, OrderDirectionEnum orderDirection)
: base(column.GetStartIndex(), column.GetStopIndex(), orderDirection, OrderDirectionEnum.ASC)
{
this._column = column;
}
public ColumnPositionSegment(int startIndex, int stopIndex, ColumnSegment columnName)
{
this._startIndex = startIndex;
this._stopIndex = stopIndex;
ColumnName = columnName;
}