korlov42 commented on code in PR #5450:
URL: https://github.com/apache/ignite-3/pull/5450#discussion_r2016117054
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modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/prepare/ddl/DdlSqlToCommandConverter.java:
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@@ -562,25 +555,40 @@ private CatalogCommand
convertAlterColumn(IgniteSqlAlterColumn alterColumnNode,
builder.nullable(!notNull);
}
- if (alterColumnNode.expression() != null) {
- SqlNode expr = alterColumnNode.expression();
+ SqlNode defaultExpr = alterColumnNode.expression();
+ if (defaultExpr != null) {
+ String columnName = alterColumnNode.name().getSimple();
+ Pair<DefaultValue.Type, DeferredDefaultValue> resolveDfltFunc =
convertDefaultExpression(defaultExpr, columnName, relType);
- DeferredDefaultValue resolveDfltFunc;
+ if (resolveDfltFunc.getFirst() != Type.CONSTANT) {
+ throw new SqlException(STMT_VALIDATION_ERR, "Cannot set
functional default: " + defaultExpr);
Review Comment:
The message is quite confusing: one might think the problem in particular
expression while we don't allow assignment of non-constant default after table
creation. Let's change it to something like "Non-constant default cannot be
assigned after table creation" or something like that.
BTW, does It make sense to move this validation to catalog?
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