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fixbug for index_advisor: field value length

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This commit is contained in:
z00574602
2021-06-17 09:55:28 +08:00
parent e46a3c5d17
commit ef23c1fe88
1 changed files with 8 additions and 1 deletions
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9
src/gausskernel/dbmind/kernel/index_advisor.cpp
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@ -53,7 +53,8 @@
#define MAX_SAMPLE_ROWS 10000 /* sampling range for executing a query */
#define CARDINALITY_THRESHOLD 30 /* the threshold of index selection */
#define MAX_QUERY_LEN 256
#define MAX_QUERY_LEN 512
#define MAX_FIELD_LEN 128
typedef struct {
char table[NAMEDATALEN];
@ -951,6 +952,9 @@ void field_value_trans(_out_ char *target, A_Const *field_value)
if (value.type == T_Integer) {
pg_itoa(value.val.ival, target);
} else if (value.type == T_String) {
if (strlen(value.val.str) > MAX_FIELD_LEN) {
return;
}
errno_t rc = sprintf_s(target, MAX_QUERY_LEN, "'%s'", value.val.str);
securec_check_ss_c(rc, "\0", "\0");
}
@ -985,6 +989,9 @@ void parse_field_expr(List *field, List *op, List *lfield_values)
continue;
}
field_value_trans(str, (A_Const *)lfirst(item));
if (strlen(str) == 0) {
continue;
}
if (i == 0) {
rc = strcpy_s(field_value, MAX_QUERY_LEN, str);
} else {