GetInterface gets interface value.

GetMode gets aggFunctionMode from aggregate function.

GetName implements AggregationFunction interface.

Retrieve the parent by index.

Get all the parents.

GetScope gets the status variables scope.

GetTimeValue gets the time value with type tp.

GetType implements Expression interface.

GetTypeDesc gets the description for column type.

GetZeroValue gets zero value for given column type.

HasBinaryFlag checks if BinaryFlag is set.

HasMultipleKeyFlag checks if MultipleKeyFlag is set.

HasUniKeyFlag checks if UniqueKeyFlag is set.

HasZerofillFlag checks if ZerofillFlag is set.

* This file is only for the builder API. */

IndentFormatter returns a new Formatter which interprets %i and %u in the Format() formats string as indent and unindent commands. The commands can ne

InsertPlan means inserting plan between two plans.

IsClockUnit returns true when unit is interval unit with hour, minute or second.

IsCorrelated checks if this expression has correlated key.

IsDateFormat returns true when the specified time format could contain only date.

IsPoint returns if the index range is a point.

IsUTF8Charset checks if charset is utf8 or utf8mb4

JoinPartitionedSorted Join multiple datasets that are sharded by the same key, and locally sorted within the shard

Len implements heap.Interface Len interface.

Length gets the length of the datum.

ListRegisteredFunctions lists out all registered mappers and reducers

MicroSecond returns current microsecond. e.g, hour("11:11:11.11") -> 110000

MulInt64 multiplies int64 a and b and returns int64 if no overflow error.

* This file is only for the builder API. */

TODO predicate pushdown

NewDecFromInt creates a MyDecimal from int.

NewDecimalDatum creates a new Datum form a MyDecimal value.

NewErrf creates a SQL error, with an error code and a format specifier.

NewMaxOrMinDec returns the max or min value decimal for given precision and fraction.

NewReader returns a new Reader that reads from r.

NewScanner returns a new scanner object.

NewSessionVars creates a session vars object.

OnDisk ensure the intermediate dataset are persisted to disk. This allows executors to run not in parallel if executors are limited.

Optimize does optimization and creates a Plan. The node must be prepared first.

ParseBit parses bit string. The string format can be b'val', B'val' or 0bval, val must be 0 or 1. Width is the display width for bit representation. -

ParseDate is a helper function wrapping ParseTime with date type.

ParseEnumName creates a Enum with item name.

ParseHex parses hexadecimal literal string. The string format can be X'val', x'val' or 0xval. val must in (0...9, a...f, A...F).

ParseHexStr parses hexadecimal literal as string. See https://dev.mysql.com/doc/refman/5.7/en/hexadecimal-literals.html

ParseOneStmt parses a query and returns an ast.StmtNode. The query must have one statement, otherwise ErrSyntax is returned.

ParseSetName creates a Set with name.