diff options
Diffstat (limited to 'sql/table.cc')
| -rw-r--r-- | sql/table.cc | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/sql/table.cc b/sql/table.cc index d5c88b226c7..1ef216a2991 100644 --- a/sql/table.cc +++ b/sql/table.cc @@ -52,7 +52,8 @@ static Virtual_column_info * unpack_vcol_info_from_frm(THD *, MEM_ROOT *, TABLE *, String *, Virtual_column_info **, bool *); -static bool check_vcol_forward_refs(Field *, Virtual_column_info *); +static bool check_vcol_forward_refs(Field *, Virtual_column_info *, + bool check_constraint); /* INFORMATION_SCHEMA name */ LEX_CSTRING INFORMATION_SCHEMA_NAME= {STRING_WITH_LEN("information_schema")}; @@ -1189,9 +1190,9 @@ bool parse_vcol_defs(THD *thd, MEM_ROOT *mem_root, TABLE *table, for (field_ptr= table->field; *field_ptr; field_ptr++) { Field *field= *field_ptr; - if (check_vcol_forward_refs(field, field->vcol_info) || - check_vcol_forward_refs(field, field->check_constraint) || - check_vcol_forward_refs(field, field->default_value)) + if (check_vcol_forward_refs(field, field->vcol_info, 0) || + check_vcol_forward_refs(field, field->check_constraint, 1) || + check_vcol_forward_refs(field, field->default_value, 0)) goto end; } @@ -3133,11 +3134,19 @@ end: DBUG_RETURN(vcol_info); } -static bool check_vcol_forward_refs(Field *field, Virtual_column_info *vcol) +static bool check_vcol_forward_refs(Field *field, Virtual_column_info *vcol, + bool check_constraint) { - bool res= vcol && - vcol->expr->walk(&Item::check_field_expression_processor, 0, - field); + bool res; + uint32 flags= field->flags; + if (check_constraint) + { + /* Check constraints can refer it itself */ + field->flags|= NO_DEFAULT_VALUE_FLAG; + } + res= (vcol && + vcol->expr->walk(&Item::check_field_expression_processor, 0, field)); + field->flags= flags; return res; } |