SELECT JsonGet_string(NULL, 'a');
|
ERROR 2013 (HY000): Lost connection to MySQL server during query
|
This also happens when trying to call json function on NULL column
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Thanks for the report.
Stack trace from 10.0 commit 4b1b305b9a876837616c85b1c37983051cd8c89d
#3 <signal handler called>
#4 0x00007f082493b8a3 in CheckMemory (g=0x7f0825090000, initid=0x7f08250223e8, args=0x7f08250223a8, n=1, m=1 '\001', obj=0 '\000', mod=0 '\000') at /src/10.0/storage/connect/jsonudf.cpp:1436
#5 0x00007f0824940055 in jsonget_string (initid=0x7f08250223e8, args=0x7f08250223a8, result=0x7f08508fa140 "", res_length=0x7f08508f9fa0, is_null=0x7f08508f9faf "") at /src/10.0/storage/connect/jsonudf.cpp:2852
#6 0x00000000008c978d in udf_handler::val_str (this=0x7f0825022398, str=0x7f08508fa0e0, save_str=0x7f08250222e8) at /src/10.0/sql/item_func.cc:3715
#7 0x00000000008ca215 in Item_func_udf_str::val_str (this=0x7f08250222d0, str=0x7f08508fa0e0) at /src/10.0/sql/item_func.cc:3903
#8 0x000000000087e189 in Item::send (this=0x7f08250222d0, protocol=0x7f08365b8538, buffer=0x7f08508fa0e0) at /src/10.0/sql/item.cc:6508
#9 0x00000000005c4a68 in Protocol::send_result_set_row (this=0x7f08365b8538, row_items=0x7f08365bc128) at /src/10.0/sql/protocol.cc:903
#10 0x0000000000632ffd in select_send::send_data (this=0x7f0825022500, items=...) at /src/10.0/sql/sql_class.cc:2573
#11 0x00000000006a71ed in JOIN::exec_inner (this=0x7f0825022520) at /src/10.0/sql/sql_select.cc:2459
#12 0x00000000006a6c0a in JOIN::exec (this=0x7f0825022520) at /src/10.0/sql/sql_select.cc:2373
#13 0x00000000006a9fb7 in mysql_select (thd=0x7f08365b7fb0, rref_pointer_array=0x7f08365bc288, tables=0x0, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7f0825022500, unit=0x7f08365bb920, select_lex=0x7f08365bc010) at /src/10.0/sql/sql_select.cc:3308
#14 0x00000000006a0333 in handle_select (thd=0x7f08365b7fb0, lex=0x7f08365bb858, result=0x7f0825022500, setup_tables_done_option=0) at /src/10.0/sql/sql_select.cc:373
#15 0x0000000000674b85 in execute_sqlcom_select (thd=0x7f08365b7fb0, all_tables=0x0) at /src/10.0/sql/sql_parse.cc:5293
#16 0x000000000066d09f in mysql_execute_command (thd=0x7f08365b7fb0) at /src/10.0/sql/sql_parse.cc:2562
#17 0x00000000006777cd in mysql_parse (thd=0x7f08365b7fb0, rawbuf=0x7f0825022088 "SELECT JsonGet_string(NULL, 'a')", length=32, parser_state=0x7f08508fb6a0) at /src/10.0/sql/sql_parse.cc:6574
#18 0x000000000066a309 in dispatch_command (command=COM_QUERY, thd=0x7f08365b7fb0, packet=0x7f082789d231 "", packet_length=32) at /src/10.0/sql/sql_parse.cc:1308
#19 0x00000000006695d6 in do_command (thd=0x7f08365b7fb0) at /src/10.0/sql/sql_parse.cc:998
#20 0x0000000000787cb2 in do_handle_one_connection (thd_arg=0x7f08365b7fb0) at /src/10.0/sql/sql_connect.cc:1378
#21 0x0000000000787a24 in handle_one_connection (arg=0x7f08365b7fb0) at /src/10.0/sql/sql_connect.cc:1293
#22 0x00007f085058b0a4 in start_thread () from /lib64/libpthread.so.0
#23 0x00007f084e91f04d in clone () from /lib64/libc.so.6