Package com.alibaba.druid.sql.ast.statement

Examples of com.alibaba.druid.sql.ast.statement.SQLSelectQuery

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            }

            if (queryBlock.getSelectList().size() == 1
                && queryBlock.getSelectList().get(0).getExpr() instanceof SQLAllColumnExpr) {
                if (from instanceof SQLSubqueryTableSource) {
                    SQLSelectQuery subQuery = ((SQLSubqueryTableSource) from).getSelect().getQuery();
                    if (queryBlockFromIsNull(visitor, subQuery)) {
                        return true;
                    }
                }
            }
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        SQLStatement stmt = stmtList.get(0);
        if (!(stmt instanceof SQLSelectStatement)) {
            return;
        }

        SQLSelectQuery query = ((SQLSelectStatement) stmt).getSelect().getQuery();
        if (query instanceof SQLSelectQueryBlock) {
            if (((SQLSelectQueryBlock) query).getFrom() == null) {
                LOG.error("invalid oracle validationQuery. " + validationQuery + ", may should be : " + validationQuery
                          + " FROM DUAL");
            }
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        SQLStatement stmt = stmtList.get(0);
        if (!(stmt instanceof SQLSelectStatement)) {
            return;
        }

        SQLSelectQuery query = ((SQLSelectStatement) stmt).getSelect().getQuery();
        if (query instanceof SQLSelectQueryBlock) {
            if (((SQLSelectQueryBlock) query).getFrom() == null) {
                LOG.error("invalid db2 validationQuery. " + validationQuery + ", may should be : " + validationQuery
                          + " FROM SYSDUMMY");
            }
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    public SQLSelectQuery query() {
        if (lexer.token() == (Token.LPAREN)) {
            lexer.nextToken();

            SQLSelectQuery select = query();
            accept(Token.RPAREN);

            return queryRest(select);
        }
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            } else if (lexer.token() == (Token.DISTINCT)) {
                union.setOperator(SQLUnionOperator.DISTINCT);
                lexer.nextToken();
            }

            SQLSelectQuery right = query();

            union.setRight(right);

            return queryRest(union);
        }

        if (lexer.token() == Token.INTERSECT) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.INTERSECT);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        if (lexer.token() == Token.MINUS) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.MINUS);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }
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                lexer.nextToken();
            } else if (lexer.token() == Token.DISTINCT) {
                union.setOperator(SQLUnionOperator.DISTINCT);
                lexer.nextToken();
            }
            SQLSelectQuery right = this.query();
            union.setRight(right);

            return unionRest(union);
        }

        if (lexer.token() == Token.EXCEPT) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.EXCEPT);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        if (lexer.token() == Token.INTERSECT) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.INTERSECT);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        if (lexer.token() == Token.MINUS) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.MINUS);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }
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    public SQLSelectQuery query() {
        if (lexer.token() == Token.LPAREN) {
            lexer.nextToken();

            SQLSelectQuery select = query();
            accept(Token.RPAREN);

            return queryRest(select);
        }
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    public SQLSelectQuery query() {
        if (lexer.token() == (Token.LPAREN)) {
            lexer.nextToken();

            SQLSelectQuery select = query();
            accept(Token.RPAREN);

            return queryRest(select);
        }
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            } else if (lexer.token() == (Token.DISTINCT)) {
                union.setOperator(SQLUnionOperator.DISTINCT);
                lexer.nextToken();
            }

            SQLSelectQuery right = query();

            union.setRight(right);

            return queryRest(union);
        }

        if (lexer.token() == Token.INTERSECT) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.INTERSECT);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        if (lexer.token() == Token.MINUS) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.MINUS);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }
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        return isSimpleCountTableSource(subQuery.getSelect());
    }

    public static boolean isSimpleCountTableSource(SQLSelect select) {
        SQLSelectQuery query = select.getQuery();

        if (query instanceof SQLSelectQueryBlock) {
            SQLSelectQueryBlock queryBlock = (SQLSelectQueryBlock) query;

            boolean allawTrueWhere = false;
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Related Classes of com.alibaba.druid.sql.ast.statement.SQLSelectQuery

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  • com.alibaba.druid.sql.dialect.db2.parser.DB2SelectParser
  • com.alibaba.druid.sql.dialect.mysql.parser.MySqlSelectParser
  • com.alibaba.druid.sql.dialect.oracle.parser.OracleSelectParser
  • com.alibaba.druid.sql.dialect.sqlserver.parser.SQLServerSelectParser
  • com.alibaba.druid.sql.PagerUtils
  • com.alibaba.druid.sql.parser.SQLSelectParser
  • com.alibaba.druid.sql.visitor.SchemaStatVisitor
  • com.alibaba.druid.wall.spi.WallVisitorUtils
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