check for nils

James Cor · James Cor · commit 6a230d85a4ef · 2025-09-19T11:36:00.000-07:00
diff --git a/sql/expression/function/char.go b/sql/expression/function/char.go
@@ -124,6 +124,11 @@ func (c *Char) Eval(ctx *sql.Context, row sql.Row) (interface{}, error) {
 			ctx.Warn(1292, "Truncated incorrect INTEGER value: '%v'", val)
 		}
 
+		if v == nil {
+			res = append(res, 0)
+			continue
+		}
+
 		res = append(res, encodeUint32(v.(uint32))...)
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -124,6 +124,11 @@ func (c Char) Eval(ctx sql.Context, row sql.Row) (interface{}, error) {`
`124`	`124`	`ctx.Warn(1292, "Truncated incorrect INTEGER value: '%v'", val)`
`125`	`125`	`}`
`126`	`126`
	`127`	`+ if v == nil {`
	`128`	`+ res = append(res, 0)`
	`129`	`+ continue`
	`130`	`+ }`
	`131`	`+`
`127`	`132`	`res = append(res, encodeUint32(v.(uint32))...)`
`128`	`133`	`}`
`129`	`134`