devops tenant api

Signed-off-by: runzexia <runzexia@yunify.com>

vendor/github.com/gocraft/dbr/join.go

@@ -0,0 +1,41 @@
+package dbr
+
+type joinType uint8
+
+const (
+	inner joinType = iota
+	left
+	right
+	full
+)
+
+func join(t joinType, table interface{}, on interface{}) Builder {
+	return BuildFunc(func(d Dialect, buf Buffer) error {
+		buf.WriteString(" ")
+		switch t {
+		case left:
+			buf.WriteString("LEFT ")
+		case right:
+			buf.WriteString("RIGHT ")
+		case full:
+			buf.WriteString("FULL ")
+		}
+		buf.WriteString("JOIN ")
+		switch table := table.(type) {
+		case string:
+			buf.WriteString(d.QuoteIdent(table))
+		default:
+			buf.WriteString(placeholder)
+			buf.WriteValue(table)
+		}
+		buf.WriteString(" ON ")
+		switch on := on.(type) {
+		case string:
+			buf.WriteString(on)
+		case Builder:
+			buf.WriteString(placeholder)
+			buf.WriteValue(on)
+		}
+		return nil
+	})
+}