Examples with MySqlSelectQueryBlock com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock used on opensource projects

Example 6 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project druid by alibaba.

the class PagerUtils method getLimit.

/**
     * 
     * @param sql
     * @param dbType
     * @return if not exists limit, return -1;
     */
public static int getLimit(String sql, String dbType) {
    List<SQLStatement> stmtList = SQLUtils.parseStatements(sql, dbType);
    if (stmtList.size() != 1) {
        return -1;
    }
    SQLStatement stmt = stmtList.get(0);
    if (stmt instanceof SQLSelectStatement) {
        SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
        SQLSelectQuery query = selectStmt.getSelect().getQuery();
        if (query instanceof SQLSelectQueryBlock) {
            if (query instanceof MySqlSelectQueryBlock) {
                SQLLimit limit = ((MySqlSelectQueryBlock) query).getLimit();
                if (limit == null) {
                    return -1;
                }
                SQLExpr rowCountExpr = limit.getRowCount();
                if (rowCountExpr instanceof SQLNumericLiteralExpr) {
                    int rowCount = ((SQLNumericLiteralExpr) rowCountExpr).getNumber().intValue();
                    return rowCount;
                }
                return Integer.MAX_VALUE;
            }
            if (query instanceof OdpsSelectQueryBlock) {
                SQLLimit limit = ((OdpsSelectQueryBlock) query).getLimit();
                SQLExpr rowCountExpr = limit != null ? limit.getRowCount() : null;
                if (rowCountExpr instanceof SQLNumericLiteralExpr) {
                    int rowCount = ((SQLNumericLiteralExpr) rowCountExpr).getNumber().intValue();
                    return rowCount;
                }
                return Integer.MAX_VALUE;
            }
            return -1;
        }
    }
    return -1;
}

Example 7 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project druid by alibaba.

the class MySqlSelectTest_15 method test_0.

public void test_0() throws Exception {
    String sql = "SELECT 1--1 from t where id = 1";
    MySqlStatementParser parser = new MySqlStatementParser(sql);
    List<SQLStatement> statementList = parser.parseStatementList();
    SQLStatement stmt = statementList.get(0);
    SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
    SQLSelect select = selectStmt.getSelect();
    Assert.assertNotNull(select.getQuery());
    MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
    Assert.assertNull(queryBlock.getOrderBy());
    //        print(statementList);
    Assert.assertEquals(1, statementList.size());
    MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
    stmt.accept(visitor);
    Assert.assertEquals(1, visitor.getTables().size());
    Assert.assertEquals(1, visitor.getColumns().size());
    Assert.assertEquals(1, visitor.getConditions().size());
    Assert.assertEquals(0, visitor.getOrderByColumns().size());
    Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("t")));
    String output = SQLUtils.toMySqlString(stmt);
    Assert.assertEquals(//
    "SELECT 1 - -1" + //
    "\nFROM t" + //
    "\nWHERE id = 1", output);
}

Example 8 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project druid by alibaba.

the class MySqlSelectTest_16 method test_0.

public void test_0() throws Exception {
    String sql = "select a from t where not a>1 and not b<1";
    MySqlStatementParser parser = new MySqlStatementParser(sql);
    List<SQLStatement> statementList = parser.parseStatementList();
    SQLStatement stmt = statementList.get(0);
    SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
    SQLSelect select = selectStmt.getSelect();
    Assert.assertNotNull(select.getQuery());
    MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
    Assert.assertNull(queryBlock.getOrderBy());
    {
        SQLExpr where = queryBlock.getWhere();
        Assert.assertTrue(where instanceof SQLBinaryOpExpr);
        SQLBinaryOpExpr binaryWhere = (SQLBinaryOpExpr) where;
        Assert.assertEquals(binaryWhere.getOperator(), SQLBinaryOperator.BooleanAnd);
        Assert.assertTrue(binaryWhere.getLeft() instanceof SQLNotExpr);
        Assert.assertTrue(binaryWhere.getRight() instanceof SQLNotExpr);
    }
    //        print(statementList);
    Assert.assertEquals(1, statementList.size());
    MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
    stmt.accept(visitor);
    Assert.assertEquals(1, visitor.getTables().size());
    Assert.assertEquals(2, visitor.getColumns().size());
    Assert.assertEquals(2, visitor.getConditions().size());
    Assert.assertEquals(0, visitor.getOrderByColumns().size());
    Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("t")));
    String output = SQLUtils.toMySqlString(stmt);
    Assert.assertEquals(//
    "SELECT a" + //
    "\nFROM t" + //
    "\nWHERE NOT a > 1" + //
    "\n\tAND NOT b < 1", output);
}

Example 9 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project druid by alibaba.

the class MySqlSelectTest_8 method test_0.

public void test_0() throws Exception {
    String sql = "select 1";
    MySqlStatementParser parser = new MySqlStatementParser(sql);
    List<SQLStatement> statementList = parser.parseStatementList();
    SQLStatement stmt = statementList.get(0);
    SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
    SQLSelect select = selectStmt.getSelect();
    Assert.assertNotNull(select.getQuery());
    MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
    Assert.assertNull(queryBlock.getOrderBy());
    //        print(statementList);
    Assert.assertEquals(1, statementList.size());
    MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
    stmt.accept(visitor);
    Assert.assertEquals(0, visitor.getTables().size());
    Assert.assertEquals(0, visitor.getColumns().size());
    Assert.assertEquals(0, visitor.getConditions().size());
    Assert.assertEquals(0, visitor.getOrderByColumns().size());
//        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("mytable")));
}

Example 10 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project druid by alibaba.

the class MySqlSelectTest_BinaryConcat method test_0.

public void test_0() throws Exception {
    String sql = //
    "select campaignId from Campaign" + //
    "   where   advertiserId =   ?" + //
    "   and   deleteStatus = false" + "   and   campaignName like binary CONCAT('%',?,'%')";
    MySqlStatementParser parser = new MySqlStatementParser(sql);
    List<SQLStatement> statementList = parser.parseStatementList();
    SQLStatement stmt = statementList.get(0);
    SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
    SQLSelect select = selectStmt.getSelect();
    Assert.assertNotNull(select.getQuery());
    MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
    Assert.assertNull(queryBlock.getOrderBy());
    //        print(statementList);
    Assert.assertEquals(1, statementList.size());
    MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
    stmt.accept(visitor);
    //        System.out.println("Tables : " + visitor.getTables());
    //        System.out.println("fields : " + visitor.getColumns());
    //        System.out.println("coditions : " + visitor.getConditions());
    //        System.out.println("orderBy : " + visitor.getOrderByColumns());
    Assert.assertEquals(1, visitor.getTables().size());
    Assert.assertEquals(4, visitor.getColumns().size());
    Assert.assertEquals(3, visitor.getConditions().size());
    Assert.assertEquals(0, visitor.getOrderByColumns().size());
// Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("mytable")));
}