**Describe the bug**
MonetDB Dec2023-SP2 crashes at `rel_value_exp2`.

**To Reproduce**
```sql
SELECT FIELD(x, '', '', '', '', '', '', '', '', '', '', '', '', '');
```

**Backtrace of the Crash**
```
 #0 0x7fb1f9b6314e (rel_value_exp2+0x129e)
 #1 0x7fb1f9b5d184 (rel_value_exp+0x84)
 #2 0x7fb1f9b69d29 (rel_select_exp+0x389)
 #3 0x7fb1f9b652e7 (rel_subquery+0x2b7)
 #4 0x7fb1f9b6545e (rel_selects+0xce)
 #5 0x7fb1f9b59421 (rel_semantic+0xa1)
 #6 0x7fb1f9a2ed35 (sql_symbol2relation+0x75)
 #7 0x7fb1f9a490bc (SQLparser+0x4cc)
 #8 0x7fb1f9a486dd (SQLengine_+0x5ed)
 #9 0x7fb1f9a46fc3 (SQLengine+0x23)
 #10 0x7fb1f9e225ff (runScenario+0x4f)
 #11 0x7fb1f9e22fb6 (MSscheduleClient+0x5d6)
 #12 0x7fb1f9ed5aab (doChallenge+0xfb)
 #13 0x7fb1fa667f21 (thread_starter+0x191)
 #14 0x7fb1f995f609 (start_thread+0xd9)
 #15 0x7fb1f9882353 (clone+0x43)
```

**Software versions**
 - MonetDB version number: v11.49.7 (Dec2023-SP2)
 - OS and version: Ubuntu 20.04
 - From docker image monetdb/monetdb:Dec2023-SP2 (or monetdb/dev-builds:default)
MonetDB Dec2023-SP2 crashes at `rel_value_exp2`
This is a GitHub Issue
repo:MonetDB
owner:MonetDB
Title : MonetDB Dec2023-SP2 crashes at `rel_value_exp2`
Issue date:

--- start body ---
**Describe the bug**
MonetDB Dec2023-SP2 crashes at `rel_value_exp2`.

**To Reproduce**
```sql
SELECT FIELD(x, '', '', '', '', '', '', '', '', '', '', '', '', '');
```

**Backtrace of the Crash**
```
 #0 0x7fb1f9b6314e (rel_value_exp2+0x129e)
 #1 0x7fb1f9b5d184 (rel_value_exp+0x84)
 #2 0x7fb1f9b69d29 (rel_select_exp+0x389)
 #3 0x7fb1f9b652e7 (rel_subquery+0x2b7)
 #4 0x7fb1f9b6545e (rel_selects+0xce)
 #5 0x7fb1f9b59421 (rel_semantic+0xa1)
 #6 0x7fb1f9a2ed35 (sql_symbol2relation+0x75)
 #7 0x7fb1f9a490bc (SQLparser+0x4cc)
 #8 0x7fb1f9a486dd (SQLengine_+0x5ed)
 #9 0x7fb1f9a46fc3 (SQLengine+0x23)
 #10 0x7fb1f9e225ff (runScenario+0x4f)
 #11 0x7fb1f9e22fb6 (MSscheduleClient+0x5d6)
 #12 0x7fb1f9ed5aab (doChallenge+0xfb)
 #13 0x7fb1fa667f21 (thread_starter+0x191)
 #14 0x7fb1f995f609 (start_thread+0xd9)
 #15 0x7fb1f9882353 (clone+0x43)
```

**Software versions**
 - MonetDB version number: v11.49.7 (Dec2023-SP2)
 - OS and version: Ubuntu 20.04
 - From docker image monetdb/monetdb:Dec2023-SP2 (or monetdb/dev-builds:default)
--- end body ---
