shengdoupi opened a new pull request, #30313:
URL: https://github.com/apache/shardingsphere/pull/30313
Fixes #30305.
Changes proposed in this pull request:
-Support the parsing of the edge constraint syntax in SQLServer [EDGE
CONSTRAINT](https://learn.microsoft.com/zh-cn/sql/relational-databases/tables/graph-edge-constraints?view=sql-server-ver16#edge-constraint-clauses)
**EDGE CONSTRAINT syntax rules**
**Supported SQL cases are as follows**
case1
```sql
CREATE TABLE bought
(
PurchaseCount INT
,CONSTRAINT EC_BOUGHT CONNECTION (Customer TO Product) ON DELETE NO
ACTION
)
AS EDGE;
```
[link](https://learn.microsoft.com/zh-cn/sql/relational-databases/tables/graph-edge-constraints?view=sql-server-ver16#edge-constraint-clauses)
case2
```sql
ALTER TABLE bought ADD CONSTRAINT EC_BOUGHT1 CONNECTION (Customer TO
Product, Supplier TO Product);
```
[link](https://learn.microsoft.com/zh-cn/sql/relational-databases/tables/graph-edge-constraints?view=sql-server-ver16#edge-constraint-clauses)
case3
```sql
ALTER TABLE bought
DROP CONSTRAINT EC_BOUGHT;
```
[link](https://learn.microsoft.com/zh-cn/sql/relational-databases/tables/graph-edge-constraints?view=sql-server-ver16#edge-constraint-clauses)
---
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