The Dialect interface encapsulates behaviors that differ across SQL databases. At present the Dialect is only used by CreateTables() but this could change in the future

Dialect is referenced in 16 repositories



type Dialect interface {

	// adds a suffix to any query, usually ";"
	QuerySuffix() string

	// ToSqlType returns the SQL column type to use when creating a
	// table of the given Go Type.  maxsize can be used to switch based on
	// size.  For example, in MySQL []byte could map to BLOB, MEDIUMBLOB,
	// or LONGBLOB depending on the maxsize
	ToSqlType(val reflect.Type, maxsize int, isAutoIncr bool) string

	// string to append to primary key column definitions
	AutoIncrStr() string

	// string to bind autoincrement columns to. Empty string will
	// remove reference to those columns in the INSERT statement.
	AutoIncrBindValue() string

	AutoIncrInsertSuffix(col *ColumnMap) string

	// string to append to "create table" statement for vendor specific
	// table attributes
	CreateTableSuffix() string

	// string to append to "create index" statement
	CreateIndexSuffix() string

	// string to append to "drop index" statement
	DropIndexSuffix() string

	// string to truncate tables
	TruncateClause() string

	// bind variable string to use when forming SQL statements
	// in many dbs it is "?", but Postgres appears to use $1
	// i is a zero based index of the bind variable in this statement
	BindVar(i int) string

	// Handles quoting of a field name to ensure that it doesn't raise any
	// SQL parsing exceptions by using a reserved word as a field name.
	QuoteField(field string) string

	// Handles building up of a schema.database string that is compatible with
	// the given dialect
	// schema - The schema that <table> lives in
	// table - The table name
	QuotedTableForQuery(schema string, table string) string

	// Existance clause for table creation / deletion
	IfSchemaNotExists(command, schema string) string
	IfTableExists(command, schema, table string) string
	IfTableNotExists(command, schema, table string) string