ExpressionToColumnDefaultValue takes in an Expression and returns the equivalent ColumnDefaultValue if the expression is valid for a default value.

MustStringToColumnDefaultValue is used for creating default values on tables that do not go through the analyzer.

Parse parses the given SQL sentence and returns the corresponding node.

ParseColumnTypeString will return a SQL type for the given string that represents a column type.

StringToColumnDefaultValue takes in a string representing a default value and returns the equivalent Expression.

TableSpecToSchema creates a sql.Schema from a parsed TableSpec.