parse

type Column struct {
	ColumnName string  // name of associated column
	Ordinal    int     // zero-based placeholder ordinal
	Value      *string // if non-nil, then a literal value
}

type CreateTableQuery struct {
	TableName string
}

type DeleteQuery struct {
	TableName string
	Key       Key
}

type DropTableQuery struct {
	TableName string
}

type InsertQuery struct {
	TableName string
	Columns   []Column
	Key       Key
}

type Key struct {
	Ordinal int     // zero-based placeholder ordinal
	Value   *string // if non-nil, then a literal value
}

type Query struct {
	Select      *SelectQuery
	Insert      *InsertQuery
	Update      *UpdateQuery
	Delete      *DeleteQuery
	CreateTable *CreateTableQuery
	DropTable   *DropTableQuery
}

type SelectQuery struct {
	ConsistentRead bool
	ColumnNames    []string
	TableName      string
	WhereClause    []string // lexemes starting with "WHERE"
	Key            *Key     // if non-nil, indicates a "where id = ?" query
}

type UpdateQuery struct {
	TableName string
	Upsert    bool
	Columns   []Column
	Key       Key
}