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[#5955] Support DISTINCT ON

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This commit is contained in:
lukaseder 2017-03-31 17:48:19 +02:00
parent b3e55d5cea
commit 99d25ea784
1 changed files with 15 additions and 3 deletions
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18
jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
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@ -642,12 +642,21 @@ class ParserImpl implements Parser {
parseKeyword(ctx, "SELECT");
boolean distinct = parseKeywordIf(ctx, "DISTINCT") || parseKeywordIf(ctx, "UNIQUE");
List<Field<?>> distinctOn = null;
if (distinct) {
if (parseKeywordIf(ctx, "ON")) {
parse(ctx, '(');
distinctOn = parseFields(ctx);
parse(ctx, ')');
}
}
else
parseKeywordIf(ctx, "ALL");
Long limit = null;
Long offset = null;
if (!distinct)
parseKeywordIf(ctx, "ALL");
// T-SQL style TOP .. START AT
if (parseKeywordIf(ctx, "TOP")) {
limit = parseUnsignedInteger(ctx);
@ -753,6 +762,9 @@ class ParserImpl implements Parser {
if (distinct)
result.setDistinct(distinct);
if (distinctOn != null)
result.addDistinctOn(distinctOn);
if (select.size() > 0)
result.addSelect(select);