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[improvement](chat) Fix the issue of having empty elements in addFieldsToSelect. (#545)
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@@ -42,7 +42,7 @@ public class SqlParserAddHelper {
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SelectBody selectBody = selectStatement.getSelectBody();
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if (selectBody instanceof PlainSelect) {
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PlainSelect plainSelect = (PlainSelect) selectBody;
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fields.stream().forEach(field -> {
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fields.stream().filter(Objects::nonNull).forEach(field -> {
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SelectExpressionItem selectExpressionItem = new SelectExpressionItem(new Column(field));
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plainSelect.addSelectItems(selectExpressionItem);
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});
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@@ -59,9 +59,6 @@ public class SqlParserAddHelper {
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});
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}
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}
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//for (String field : fields) {
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// SelectUtils.addExpression(selectStatement, new Column(field));
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//}
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return selectStatement.toString();
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}
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@@ -228,7 +225,7 @@ public class SqlParserAddHelper {
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}
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private static void addAggregateToSelectItems(List<SelectItem> selectItems,
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Map<String, String> fieldNameToAggregate) {
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Map<String, String> fieldNameToAggregate) {
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for (SelectItem selectItem : selectItems) {
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if (selectItem instanceof SelectExpressionItem) {
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SelectExpressionItem selectExpressionItem = (SelectExpressionItem) selectItem;
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@@ -243,7 +240,7 @@ public class SqlParserAddHelper {
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}
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private static void addAggregateToOrderByItems(List<OrderByElement> orderByElements,
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Map<String, String> fieldNameToAggregate) {
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Map<String, String> fieldNameToAggregate) {
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if (orderByElements == null) {
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return;
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}
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@@ -258,7 +255,7 @@ public class SqlParserAddHelper {
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}
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private static void addAggregateToGroupByItems(GroupByElement groupByElement,
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Map<String, String> fieldNameToAggregate) {
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Map<String, String> fieldNameToAggregate) {
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if (groupByElement == null) {
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return;
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}
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@@ -279,7 +276,7 @@ public class SqlParserAddHelper {
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}
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private static void modifyWhereExpression(Expression whereExpression,
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Map<String, String> fieldNameToAggregate) {
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Map<String, String> fieldNameToAggregate) {
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if (SqlParserSelectHelper.isLogicExpression(whereExpression)) {
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AndExpression andExpression = (AndExpression) whereExpression;
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Expression leftExpression = andExpression.getLeftExpression();
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@@ -387,4 +387,14 @@ class SqlParserAddHelperTest {
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replaceSql);
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}
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@Test
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void addFieldsToSelect() {
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String correctS2SQL = "SELECT 用户, 页面 FROM 超音数用户部门 GROUP BY 用户, 页面 ORDER BY count(*) DESC";
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String replaceFields = SqlParserAddHelper.addFieldsToSelect(correctS2SQL,
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SqlParserSelectHelper.getOrderByFields(correctS2SQL));
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Assert.assertEquals(
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"SELECT 用户, 页面 FROM 超音数用户部门 GROUP BY 用户, 页面 ORDER BY count(*) DESC", replaceFields);
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}
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}
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