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[jOOQ/jOOQ#11564] Avoid unnecessary derived column lists

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This commit is contained in:
Lukas Eder 2021-03-04 18:02:11 +01:00
parent 6de80af708
commit 05b6283c18
1 changed files with 36 additions and 36 deletions
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72
jOOQ/src/main/java/org/jooq/impl/GenerateSeries.java
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@ -82,47 +82,47 @@ final class GenerateSeries extends AbstractTable<Record1<Integer>> implements Au
private final Field<Integer> from;
private final Field<Integer> to;
private final Field<Integer> step;
GenerateSeries(Field<Integer> from, Field<Integer> to) {
this(from, to, null);
}
GenerateSeries(Field<Integer> from, Field<Integer> to, Field<Integer> step) {
super(TableOptions.expression(), N_GENERATE_SERIES);
this.from = from;
this.to = to;
this.step = step;
}
@Override
public final void accept(Context<?> ctx) {
if (EMULATE_WITH_RECURSIVE.contains(ctx.dialect())) {
Name v = unquotedName("v");
Field<Integer> f = DSL.field(v, INTEGER);
visitSubquery(
ctx,
withRecursive(N_GENERATE_SERIES, v)
.as(select(from).unionAll(select(iadd(f, step == null ? inline(1) : step)).from(N_GENERATE_SERIES).where(f.lt(to))))
.select(f.as(N_GENERATE_SERIES)).from(N_GENERATE_SERIES),
true
);
}
else if (EMULATE_SYSTEM_RANGE.contains(ctx.dialect())) {
if (step == null) {
ctx.visit(N_SYSTEM_RANGE).sql('(').visit(from).sql(", ").visit(to).sql(')');
}
// Work around https://github.com/h2database/h2database/issues/3046
else {
ctx.visit(N_SYSTEM_RANGE).sql('(').visit(from).sql(", ").visit(to).sql(", ");
ctx.paramType(INLINED, c -> c.visit(step));
ctx.sql(')');
}
}