support quoting reserved words

dialects/oracle/oracle.go

@@ -7,6 +7,7 @@ import (
 	"strconv"
 	"strings"
 	"time"
+
 	"github.com/jinzhu/gorm"
 	_ "github.com/mattn/go-oci8"
 )
@@ -38,6 +39,9 @@ func (oracle) BindVar(i int) string {
 }
 
 func (oracle) Quote(key string) string {
+	if isReserved(key) {
+		return fmt.Sprintf(`"%s"`, key)
+	}
 	return key
 }
 

dialects/oracle/reserved.go

@@ -0,0 +1,167 @@
+package oracle
+
+import (
+	"strings"
+	"sync"
+)
+
+const reserved = `AGGREGATE
+AGGREGATES
+ALL
+ALLOW
+ANALYZE
+ANCESTOR
+AND
+ANY
+AS
+ASC
+AT
+AVG
+BETWEEN
+BINARY_DOUBLE
+BINARY_FLOAT
+BLOB
+BRANCH
+BUILD
+BY
+BYTE
+CASE
+CAST
+CHAR
+CHILD
+CLEAR
+CLOB
+COMMIT
+COMPILE
+CONSIDER
+COUNT
+DATATYPE
+DATE
+DATE_MEASURE
+DAY
+DECIMAL
+DELETE
+DESC
+DESCENDANT
+DIMENSION
+DISALLOW
+DIVISION
+DML
+ELSE
+END
+ESCAPE
+EXECUTE
+FIRST
+FLOAT
+FOR
+FROM
+HIERARCHIES
+HIERARCHY
+HOUR
+IGNORE
+IN
+INFINITE
+INSERT
+INTEGER
+INTERVAL
+INTO
+IS
+LAST
+LEAF_DESCENDANT
+LEAVES
+LEVEL
+LEVELS
+LIKE
+LIKEC
+LIKE2
+LIKE4
+LOAD
+LOCAL
+LOG_SPEC
+LONG
+MAINTAIN
+MAX
+MEASURE
+MEASURES
+MEMBER
+MEMBERS
+MERGE
+MLSLABEL
+MIN
+MINUTE
+MODEL
+MONTH
+NAN
+NCHAR
+NCLOB
+NO
+NONE
+NOT
+NULL
+NULLS
+NUMBER
+NVARCHAR2
+OF
+OLAP
+OLAP_DML_EXPRESSION
+ON
+ONLY
+OPERATOR
+OR
+ORDER
+OVER
+OVERFLOW
+PARALLEL
+PARENT
+PLSQL
+PRUNE
+RAW
+RELATIVE
+ROOT_ANCESTOR
+ROWID
+SCN
+SECOND
+SELF
+SERIAL
+SET
+SOLVE
+SOME
+SORT
+SPEC
+SUM
+SYNCH
+TEXT_MEASURE
+THEN
+TIME
+TIMESTAMP
+TO
+UNBRANCH
+UPDATE
+USING
+VALIDATE
+VALUES
+VARCHAR2
+WHEN
+WHERE
+WITHIN
+WITH
+YEAR
+ZERO
+ZONE`
+
+var setupReserved sync.Once
+var reservedWords map[string]struct{}
+
+func isReserved(w string) bool {
+	setupReserved.Do(
+		func() {
+			words := strings.Split(reserved, "\n")
+			reservedWords = make(map[string]struct{}, len(words))
+			for _, s := range words {
+				reservedWords[s] = struct{}{}
+			}
+		},
+	)
+	_, ok := reservedWords[strings.ToUpper(w)]
+	return ok
+}