Add coalesce and sql value func node support

amazon-aurora · Mar 5, 2025 · 6bf7b55 · 6bf7b55
1 parent 3f7b7de
commit 6bf7b55
Showing 1 changed file with 60 additions and 0 deletions.
diff --git a/contrib/babelfishpg_tsql/src/pltsql_ruleutils.c b/contrib/babelfishpg_tsql/src/pltsql_ruleutils.c
@@ -1465,6 +1465,66 @@ get_rule_expr(Node *node, deparse_context *context,
 			}
 			break;
 
+		case T_SQLValueFunction:
+			{
+				SQLValueFunction *svf = (SQLValueFunction *) node;
+
+				/*
+					* Note: this code knows that typmod for time, timestamp, and
+					* timestamptz just prints as integer.
+					*/
+				switch (svf->op)
+				{
+					case SVFOP_CURRENT_DATE:
+						appendStringInfoString(buf, "CURRENT_DATE");
+						break;
+					case SVFOP_CURRENT_TIME:
+						appendStringInfoString(buf, "CURRENT_TIME");
+						break;
+					case SVFOP_CURRENT_TIME_N:
+						appendStringInfo(buf, "CURRENT_TIME(%d)", svf->typmod);
+						break;
+					case SVFOP_CURRENT_TIMESTAMP:
+						appendStringInfoString(buf, "CURRENT_TIMESTAMP");
+						break;
+					case SVFOP_CURRENT_TIMESTAMP_N:
+						appendStringInfo(buf, "CURRENT_TIMESTAMP(%d)",
+											svf->typmod);
+						break;
+					case SVFOP_LOCALTIME:
+						appendStringInfoString(buf, "LOCALTIME");
+						break;
+					case SVFOP_LOCALTIME_N:
+						appendStringInfo(buf, "LOCALTIME(%d)", svf->typmod);
+						break;
+					case SVFOP_LOCALTIMESTAMP:
+						appendStringInfoString(buf, "LOCALTIMESTAMP");
+						break;
+					case SVFOP_LOCALTIMESTAMP_N:
+						appendStringInfo(buf, "LOCALTIMESTAMP(%d)",
+											svf->typmod);
+						break;
+					case SVFOP_CURRENT_ROLE:
+						appendStringInfoString(buf, "CURRENT_ROLE");
+						break;
+					case SVFOP_CURRENT_USER:
+						appendStringInfoString(buf, "CURRENT_USER");
+						break;
+					case SVFOP_USER:
+						appendStringInfoString(buf, "USER");
+						break;
+					case SVFOP_SESSION_USER:
+						appendStringInfoString(buf, "SESSION_USER");
+						break;
+					case SVFOP_CURRENT_CATALOG:
+						appendStringInfoString(buf, "CURRENT_CATALOG");
+						break;
+					case SVFOP_CURRENT_SCHEMA:
+						appendStringInfoString(buf, "CURRENT_SCHEMA");
+						break;
+				}
+			}
+		break;
 
 		case T_SetToDefault:
 			appendStringInfoString(buf, "DEFAULT");