Method accept

jOOQ/src/main/java/org/jooq/impl/SelectQueryImpl.java:1540–1679

(Context<?> ctx)

    @SuppressWarnings("unchecked")
    @Override
    public final void accept(Context<?> ctx) {
        Table<?> dmlTable;
        Table<?> dcdTable;
        List<Table<?>> dmlTables;

        // [#6583] [#8609] [#14742] Work around MySQL's self-reference-in-DML-subquery restriction
        if (ctx.subqueryLevel() == 1
            && REQUIRES_DERIVED_TABLE_DML.contains(ctx.dialect())
            && !TRUE.equals(ctx.data(DATA_INSERT_SELECT))
            && (dmlTable = (Table<?>) ctx.data(DATA_DML_TARGET_TABLE)) != null
            && containsUnaliasedTable(getFrom(), dmlTable)) {
            ctx.visit(DSL.select(asterisk()).from(asTable("t")));
        }

        // [#14742] MariaDB still has this bug: https://jira.mariadb.org/browse/MDEV-17954
        else if (ctx.subqueryLevel() == 1
            && ctx.family() == MARIADB
            && !TRUE.equals(ctx.data(DATA_INSERT_SELECT))
            && (

            // A USING clause can be generated when the target table is aliased
                    (dmlTable = (Table<?>) ctx.data(DATA_DML_TARGET_TABLE)) != null
                && Tools.aliased(dmlTable) != null
                && containsUnaliasedTable(getFrom(), dmlTable)

            // Or, explicitly
            ||      (dmlTables = (List<Table<?>>) ctx.data(DATA_DML_USING_TABLES)) != null
                && Tools.anyMatch(dmlTables, t -> containsUnaliasedTable(getFrom(), t)))) {
            ctx.visit(DSL.select(asterisk()).from(asTable("t")));
        }

        // [#5810] Emulate the Teradata QUALIFY clause
        else if (qualify.hasWhere() && transformQualify(ctx.configuration())) {



        }

        // [#3564] Emulate DISTINCT ON queries at the top level
        else if (Tools.isNotEmpty(distinctOn) && EMULATE_DISTINCT_ON.contains(ctx.dialect())) {
            ctx.visit(distinctOnEmulation());
        }