Encode json values implicitly in the sql queries according the golang json package spec.

mysql/dialect.go

@@ -6,7 +6,7 @@ import (
 	"github.com/go-jet/jet/v2/internal/jet"
 )
 
-// Dialect is implementation of MySQL dialect for SQL Builder serialisation.
+// Dialect is implementation of MySQL dialect for SQL Builder serialization.
 var Dialect = newDialect()
 
 func newDialect() jet.Dialect {
@@ -34,6 +34,23 @@ func newDialect() jet.Dialect {
 		ValuesDefaultColumnName: func(index int) string {
 			return fmt.Sprintf("column_%d", index)
 		},
+		JsonValueEncode: func(expr Expression) Expression {
+			switch e := expr.(type) {
+			case BlobExpression:
+				return TO_BASE64(e)
+
+			// CustomExpression used bellow (instead DATE_FORMAT function) so that only expr is parametrized
+			case TimestampExpression:
+				return CustomExpression(Token("DATE_FORMAT("), e, Token(",'%Y-%m-%dT%H:%i:%s.%fZ')"))
+			case TimeExpression:
+				return CustomExpression(Token("CONCAT('0000-01-01T', DATE_FORMAT("), e, Token(",'%H:%i:%s.%fZ'))"))
+			case DateExpression:
+				return CustomExpression(Token("CONCAT(DATE_FORMAT("), e, Token(",'%Y-%m-%d')"), Token(", 'T00:00:00Z')"))
+			case BoolExpression:
+				return CustomExpression(e, Token(" = 1"))
+			}
+			return expr
+		},
 	}
 
 	return jet.NewDialect(mySQLDialectParams)

mysql/interval_literal.go

@@ -98,13 +98,10 @@ func INTERVAL(value interface{}, unitType unitType) Interval {
 
 // INTERVALe creates new temporal interval from expresion and unit type.
 func INTERVALe(expr Expression, unitType unitType) Interval {
-	return jet.NewInterval(jet.ListSerializer{
-		Serializers: []jet.Serializer{expr, jet.RawWithParent(string(unitType))},
-		Separator:   " ",
-	})
+	return jet.IntervalExp(CustomExpression(Token("INTERVAL"), expr, Token(unitType)))
 }
 
-// INTERVALd temoral interval from time.Duration
+// INTERVALd creates new temporal interval from time.Duration
 func INTERVALd(duration time.Duration) Interval {
 	var sign int64 = 1
 	if duration < 0 {

mysql/select_json.go

@@ -43,7 +43,7 @@ func newSelectStatementJson(projections []Projection, statementType jet.Statemen
 }
 
 func constructJsonFunc(projections []Projection, statementType jet.StatementType) Expression {
-	jsonObj := Func("JSON_OBJECT", CustomExpression(jet.JsonProjectionList(projections)))
+	jsonObj := Func("JSON_OBJECT", CustomExpression(jet.JsonObjProjectionList(projections)))
 
 	if statementType == jet.SelectJsonArrStatementType {
 		return Func("JSON_ARRAYAGG", jsonObj)