CompareDatum compares datum to another datum. TODO: return error properly.

Convert converts t with type tp.

ConvertJSONToInt casts JSON into int64.

ConvertToTime converts duration to Time. Tp is TypeDatetime, TypeTimestamp and TypeDate.

ConvertUintToUint converts an uint value to another uint value of different precision.

DecodeBytes decodes bytes which is encoded by EncodeBytes before, returns the leftover bytes and decoded value if no error.

DecodeCmpUintToInt decodes the u that encoded by EncodeIntToCmpUint

DecodeCompactBytes decodes bytes which is encoded by EncodeCompactBytes before.

DecodeDecimal decodes bytes to decimal.

DecodeFloat decodes a float from a byte slice generated with EncodeFloat before.

DecodeUvarint decodes value encoded by EncodeUvarint before. It returns the leftover un-decoded slice, decoded value if no error.

DefaultTypeForValue returns the default FieldType for the value.

EncodeBytes guarantees the encoded value is in ascending order for comparison, encoding with the following rule: [group1][marker1]...[groupN][markerN]

EncodeDecimal encodes a decimal into a byte slice which can be sorted lexicographically later.

EncodeIntToCmpUint make int v to comparable uint type

EncodeVarint appends the encoded value to slice b and returns the appended slice. Note that the encoded result is not memcomparable.

Equal checks if err is equal to e.

ErrorEqual returns a boolean indicating whether err1 is equal to err2.

FormatAsCastType is used for write AST back to string.

GetBytes returns the bytes value with the colIdx.

GetEnum returns the Enum value with the colIdx.

GetProjectionOffset returns ValueExpr.projectionOffset.

GetSet returns the Set value with the colIdx.

GetString gets the string value.

GetUint64 gets the uint64 value.

HandleOverflow treats ErrOverflow as warnings or returns the error based on the StmtCtx.OverflowAsWarning state.

HasBinaryFlag checks if BinaryFlag is set.

HasPriKeyFlag checks if PriKeyFlag is set.

IsFloat returns true is querypb.Type is a floating point.

IsQuoted returns true if querypb.Type is a quoted text or binary.

IsTypeUnspecified returns a boolean indicating whether the tp is the Unspecified type.

Len implements the Iterator interface

MaxMySQLTime returns Time with maximum mysql time type.

NewBinaryLiteralFromUint creates a new BinaryLiteral instance by the given uint value in BitEndian. byteSize will be used as the length of the new Bin

NewScanner returns a new scanner object.

NewStringTokenizer creates a new Tokenizer for the sql string.

NewValArg builds a new ValArg.

ParseDateFormat parses a formatted date string and returns separated components.

ParseFrac parses the input string according to fsp, returns the microsecond, and also a bool value to indice overflow. eg: "999" fsp=2 will overflow.

ParsedQuery returns a ParsedQuery that contains bind locations for easy substitution.

SecurityString formats the UserSpec without password information.

SetFlag sets flag for expression.

SetMysqlEnum sets Enum value

SetMysqlSet sets Set value

SetProjectionOffset sets ValueExpr.projectionOffset for logical plan builder.

String implements Stringer interface.

String implements Stringer interface.

String implements fmt.Stringer interface.

ToNative converts Value to a native go type. This does not work for sqltypes.Tuple. The function panics if there are inconsistencies.

ToPackedUint encodes Time to a packed uint64 value. 1 bit 0 17 bits year*13+month (year 0-9999, month 0-12) 5 bits day (0-31) 5 bits h

Type returns type of BinaryJSON as string.

calcWeek calculates week and year for the time.

containsAnyAsterisk returns true if pef contains any asterisk.

datetimeToUint64 converts time value to integer in YYYYMMDDHHMMSS format.

decimalBinSize returns the size of array to hold a binary representation of a decimal.

doInsert inserts the newBj to its parent, and builds the new parent.

extractHourMicrosecond extracts hour and microsecond from a string and its format is `HH:MM:SS.FFFFFF`.

extractHourMinute extracts hour and minute from a string and its format is `HH:MM`.

extractHourSecond extracts hour and second from a string and its format is `HH:MM:SS`.

getValidFloatPrefix gets prefix of string which can be successfully parsed as float.

getValidIntPrefix gets prefix of the string which can be successfully parsed as int.

parseDateTimeFromNum parses date time from num. See number_to_datetime function. https://github.com/mysql/mysql-server/blob/5.7/sql-common/my_time.c

peek peeks the first encoded value from b and returns its length.

popOneLastLeg returns the a parent PathExpression and the last pathLeg