Access Join Two Queries

Union All Query Syntax for SQL Server and Microsoft Access Union Query Overview The purpose of the SQL UNION and UNION ALL commands are to combine the results of two or more queries into a single result set consisting of all the rows belonging to all the queries in the union. For the Delete Query to work, Microsoft Access requires the SQL syntax to include the DISTINCTROW syntax to specify that it's a unique query relationship between the two tables: DELETE DISTINCTROW TableA. An F() object with a double underscore will introduce any joins needed to access the related object. SELECT * FROM CI_SYSTEMOBJECTS WHERE SI_ID=4. Inner join is recommended because outer join is much slower operation than inner join. Help Me Obi Wan Kenobi, You're My Only Hope. Here are some ways which can be done to Find and Remove Duplicates MS Access Query: 1. I have to declare that I bring a OO bias to the discussion, but I've lived on the other side too. Self Join Query Code: a) Update M_Emp as A INNER JOIN M_Emp as B ON A. field2 FROM Table1 LEFT JOIN Table2 ON (Table1. Query of Queries - Combining Two Datasources - Coldfusion Database Access. See Section 5. in my example I have 2 queries 1 is Rels and the other is Related Acc the Related Acc query is reading the account name for accounts that are the Rel Business Partner ID from the Rels Query The result is two tables 1 of the accounts with the related accounts and the other of the related accounts IDs with their names. Close the Show Table dialog box. A single DELETE statement on multiple related tables which the child table have an ON DELETE CASCADE referential action for the foreign key. Price <> oranges. You do not need to update the underlying records. Upon saving and rerunning this query, you might notice that Access will display our written expression a bit differently: This is yet another way of expressing the same thing. Remember: those tables must have at least field related for a relation query. In this article I want to explore the pros and cons of using rich SQL queries that may contain domain logic. > questions > how to run multiple queries through for the first two query's:. For our example we will use two tables ( download SQL dump at end of this tutorial ) one is section_a and other one is section_b. This kind of result is called as Cartesian Product. OpenQuery "Delete Query Name" You can use one button to run all of these commands in the sequence you desire. In fact, joins are to queries what relationships are to tables. Then I join the concatenated fields in a query. • Generally, the join condition will be an equality comparison of the primary key in one table and the related foreign key in. It gives us the best of both worlds by allowing us to correlate AND not have the query embedded in the select list: [cc lang=”sql”] SELECT soh. Click build on the shortcut menu, Access will display the _____ which includes an expression box, operator buttons, and expression elements. Joins on object collections vs. people who has a salary record, the answer we get back in our query will not include that person. MS SQL Server has PIVOT queries, but you have to specify all the columns. A join is a query that combines rows from two or more tables, views, or materialized views ("snapshots"). I’ve got a database with two product tables containing a common column with a numeric product code and an associated product name. Db1 Col_1 Col_2 1 a 2 b 3 c 4 d 5 e 6 f 7 g 8 j 9 h 10 i Db2 Col_1 Col_2 1 j 2 a 3 d 4 e 5 c 6 b 7 f 8 g 9 h 10 i Then I have the following 2 Select queries: SELECT Db1. What fuel economy is our vehicle getting (miles per gallon in the USA)? This question requires creating two queries, with the first query being used as part of the second query. Learn software, creative, and business skills to achieve your personal and professional goals. MS Access Queries: Using same criteria in multiple fields? by proline | February 14, 2004 11:43 AM PST I have a table that stores all of the components pertaining to a particular tooling system as. I'm not familiar with Access but if I remember rudy's postings correctly you need to wrap the joins inside ( and ) siteguru August 30, 2014, 11:32am #3. BigQuery runs blazing-fast SQL queries on gigabytes to petabytes of data and makes it easy to join public or commercial datasets with your data. * FROM Books JOIN BooksAuthors ON Books. For example, you could use LEFT JOIN with the Departments (left) and Employees (right) tables to select all departments, including those that have no employees assigned to them. I have two recordsets filled with data in excel VBA: rs1 and rs2. The DocumentDB query provider performs a best effort mapping from a LINQ query into a DocumentDB SQL query. There's a lot of theory behind relational databases and queries! But it works - 100% of the time - if you do it right. join (here put your second query) b on a. Select From File under the Get External Data section of the tab. Research has proven that these 10 queries are only 3% of entire query set which can be formulated in SQL. In this sql cheatsheet we will provide some common query questions asked and SQL solutions to these questions. and one for the Transaction history list. We cannot give you detailed help with SQL (Structured Query Language) beyond providing you with the names of some good currently available manuals. Name = TableB. This will be covered in greater detail the lesson on making queries run faster , but for all you need to know is that it can occasionally make your query run faster to join on multiple fields, even when it does not add to the accuracy of the query. In result, you will get a merged table which consists of the first table, plus the matched rows copied from the second table. Being able to query and work with data from multiple tables requires some front-end planning to set up the tables correctly, and this chapter from Paul McFedries helps you to design databases to make such queries possible. For example, you could use LEFT JOIN with the Departments (left) and Employees (right) tables to select all departments, including those that have no employees assigned to them. I would like to have a way to run all 200 queries and produce some sort of report showing the name of each query and the results, and I would like to do this in 1 step. But to harness the true power of relational databases it is vital to master queries using more than one table. item_id, Sum(stock. Creating an Access Union Query – Step-by-Step. Click on Next. ml with whatever is in saw. SQL provides several types of joins such as inner join, outer joins ( left outer join or left join, right outer join or right join, and full outer join) and self join. For instance, using our database, we can create a query to list customer name and contact information with order dates and numbers, even though two different tables store the data. In a LINQ query expression, join operations are performed on object. In this sql cheatsheet we will provide some common query questions asked and SQL solutions to these questions. Description. Then I join the concatenated fields in a query. Parameter Queries in Microsoft Access 2013. An update query provides you an opportunity to review the updated data before you perform the update. When you create a multiple-table query, Access will usually link or join the tables automatically. • Generally, the join condition will be an equality comparison of the primary key in one table and the related foreign key in. You can access as many databases on the master as you want by adding further binlog-do-db fields to the master's my. How do I join across databases. MS Access 2003: Joining 3 tables (using left joins) This MSAccess tutorial explains how to create a query that joins 3 tables using LEFT JOINS in Access 2003 (with screenshots and step-by-step instructions). You'll also learn the difference between inner joins, left outer joins and right. In order to display a complete record I need to combine [PhoneNum] from both tables into one in the query results. In this part three of the series, we'll learn how to work with multiple tables that have relationships with each other. Using a cross join between these two tables you could calculate the sales price of each product in each state. I'll explain the other two in a future lesson, but not for now. Note the number of rows and columns; several columns are repeated more often than strictly necessary. This is a less explicit form of joining, therefore I will not explain it here. Name = TableB. To retrieve data from two or more tables in one query we use the SQL JOIN statement. I trying to join 5 tables but I am getting errors. Remove duplicate records while using Left Outer Join in query Need to take all records from Table1 but record id count must be unique records while using. This MSAccess tutorial explains how to concatenate two field in a query in Access 2003 (with screenshots and step-by-step instructions). How to Calculate Multiple Aggregate Functions in a Single Query Posted on April 20, 2017 April 23, 2017 by lukaseder At a customer site, I've recently encountered a report where a programmer needed to count quite a bit of stuff from a single table. Actually the query does support two columns for a join between tables. This type of query is probably one. With AQT you cannot run a query that accesses tables in more than one database (for instance a table in Oracle and a table in DB2). Train an ML model in minutes or drive geospatial analysis with plain SQL. You can call more than one table by using the FROM. One of the most confusing things about relationships and queries in Microsoft's Access is using Join Properties to link properties between two tables. Query result set - 77 rows returned: Practice #2: Join three tables. A SQL join is a Structured Query Language (SQL) instruction to combine data from two sets of data (i. Along with 16+ years of hands on experience he holds a Masters of Science degree and a number of database certifications. The meaning is the same meaning for mathematic operator. multiple queries with ms access and c#. We'll teach you exactly what a parameter query is and how you can create them. Query Viewer allows execution of existing queries. ', caused by having the second JOIN condition: SELECT Table1. GROUP by with NULL value: 2. Make Table Queries. fA UNION SELECT. To combine records from tables or queries by using the union query , you need to know its rule-- the tables or queries that you want to combine must have the same number of columns, unless the union query cannot execute. This article will introduce you to database joins - queries using 2 or more tables. For the Delete Query to work, Microsoft Access requires the SQL syntax to include the DISTINCTROW syntax to specify that it's a unique query relationship between the two tables: DELETE DISTINCTROW TableA. In Access, it’s quite a simple procedure to perform but users need to first create a relationship between the two tables. UPPER is known as a function. To query data from multiple tables you use join statements. Building queries with Relational Algebra. But if you are working on a large application i. The anchor member can be composed of one or more query blocks combined by the set operators: union all, union. The main functions used to achieve this are:. You can use an Update Query to change the data in your tables, and you can use an update query to enter criteria to specify which rows should be updated. Now in my 1st search I have a. What is Cross Join in SQL? The SQL CROSS JOIN produces a result set which is the number of rows in the first table multiplied by the number of rows in the second table if no WHERE clause is used along with CROSS JOIN. Get the complete tutorial FRE. and one for the Transaction history list. It may take multiple steps, but each step is fairly simple. I know that this is 2 years old but I wanted to add two things to try if you still have not gotten this working, particularly if you are getting "No global profile is configured. Make Table Queries. Access one of the pages of data on the site using Power Query’s From Web functionality. You can use a query to view a subset of your data or to answer questions about your data. Create a union query by using two tables. Performing a LEFT JOIN on just the customer and sales tables. Example: SELECT * FROM a JOIN b ON TRUE, b JOIN c ON TRUE; The query above is equivalent to. This will be handy for those who searching for Query Builder Queries. MS Access 2003: Joining 3 tables (using left joins) This MSAccess tutorial explains how to create a query that joins 3 tables using LEFT JOINS in Access 2003 (with screenshots and step-by-step instructions). Joins Involving Inline Views. The output of the SQL query will be displayed on the console by default, but may be saved in a new CSV file. For example, to retrieve all the entries where the author’s name is the same as the blog name, we could issue the query:. Research has proven that these 10 queries are only 3% of entire query set which can be formulated in SQL. Description. To perform a basic SQL "inner join", you may use the join method on a query builder instance. The sorting of the first query should be done FIRST and then the calculation should be done. Calculating in Access Queries. col1, Table1. ModuleId,NJD. , query types, or specific queries), or using specific access paths to the former (e. You can call more than one table by using the FROM. The meaning is the same meaning for mathematic operator. The order of the DOM elements in the returned jQuery object may not be identical, as they will be in document order. To get the data you want, however, you do need to know how Access combines your criteria. Create a query that is based on the Order Total and the Order Count crosstab queries. Here's how: In the Merge dialog box, hold the Ctrl key and click on the key columns one-by-one to select them. py is a Python module and program that allows you to execute SQL code against data contained in one or more comma-separated-value (CSV) files. To view all the records from two tables with identical structure, you use a union query. The tables don't even need to have the same fields or fields of exactly the same data types. Join the two copies of the table together as if you were creating a self-join query. Use the Access find duplicates query to strengthen your database. We'll teach you exactly what a parameter query is and how you can create them. While joins should be used for INNER JOIN or custom queries, left_outer_joins is used for queries using LEFT OUTER JOIN. Access applies filters intelligently, i. Join lines connect the matching fields between tables. This works fine in Sql Server select D. You can use a query to view a subset of your data or to answer questions about your data. The above query is not possible with INNER JOIN. MS Access 2003: Create a query using a Left Join. Microsoft Access Projects for $10 - $30. To view all the records from two tables with identical structure, you use a union query. (i am assuming you would need a full outer join to put your two queries together, this trick avoids the need for a full outer join, otherwise, if a material_id is either in BOTH results or NIETHER result - -just join). The duplicated rows in the employee table gets passed along to the results of the join. MS Access: Concatenate strings together. Joining tables from different sources. If you are joining related link tables in MS Access database as like SQL Server database, it will work fine for a single link table, but it will not work for more than one join query. This shows you how to query an Oracle 11g database from Excel 2007 (only available when you do a FULL install of Excel 2007). On the Create tab, in the Queries group, click Query Design. Access database engine is more likely to prefer the frustrated join whereas SQL Server tends toward the existence check. When comma cross joins are present in a query with a sequence of JOINs, they group from left to right like other JOIN types. You want all the data from those three tables in one query. ap_suppliers_sites_all L 4. You want all the data from those three tables in one query. In particular, Access doesn't allow either end of a join in a query to be a memo field. However, you often want to query data from multiple tables to have a complete result set for analysis. Modules: Concatenate fields in same table. We used a left join so that the query would look at the Orders table first, and we used search criteria to narrow down our results. Additionally, queries allow you to join two or more related tables, concatenate text fields, summarize data, create calculated fields, and append, update, or delete. NON ANSI JOIN uses a WHERE clause in the query. max_unit_price FROM AdventureWorks. Use the Access find duplicates query to strengthen your database. Create another new query adding the PLAYERS, STATS and TEAMS tables to the design grid. Access expert Adam Wilbert explains how to create real-world queries to filter and sort data and perform calculations, as well as refine query results with built-in functions, all while offering challenges that help you master the material. You can visualize it this way – A SELF JOIN for a given table is a join that is performed between two identical copies of that table. Remember: those tables must have at least field related for a relation query. Join the two copies of the table together as if you were creating a self-join query. Joins take the data from two tables and binds them into a single table. Net said Can anyone plz convert this Sql Server query in to MS-Access Query. For more information about creating DSNs, see the Help file for your operating system or see the ODBC Help file. The combined effects of a sequence of operations determine the final result. Calculating Totals in Access Queries. Query 3: Here is another way of doing the same thing as Query 2, but here in the sub-query it uses IN rather than INNER JOIN. com) tutorial, you'll see how to link tables in a Microsoft Access 2010 Query. Click on Next. Right outer joins include all of the records from the second (right) of two tables, even if there are no matching values for records in the first (left) table. type = 3 I get join expression not join expressions? multiple conditions. This is the exact opposite of a LEFT JOIN ; i. MySQL Joins. In some cases, however, the related data is all within a single table. To resolve this problem, you must join the tables correctly so you can update them. In this tip, we will write a query to join a table containing multiple employee IDs within a single sales table to an employee table. INNER JOIN operation (Microsoft Access SQL) 09/18/2015; 3 minutes to read; In this article. Or you can leave them in your first source range and include a "1" for header rows at the end of your query. There are two main ways to code up a join in SQL. A self-join is a query in which a table is joined (compared) to itself. For example, the maximum number of tables in a query is 32, which implies that the amount of joins is also limited hans_v actually there are limitiations. Self Join Query Code: a) Update M_Emp as A INNER JOIN M_Emp as B ON A. Let us say we want records of March 2015 to Feb 2016. We'll teach you exactly what a parameter query is and how you can create them. people who has a salary record, the answer we get back in our query will not include that person. Here's how: In the Merge dialog box, hold the Ctrl key and click on the key columns one-by-one to select them. (I'm pretty novice at SQL Queries, so bear with me!) However, I want to exclude duplicate data (based on just one column -- an address field). One of the things that I'm trying to do is the following: - I have a SQL Server database that has two tables, a customer table and. col4 from Table1 inner join Table2 on Table1. Today, you’ll learn to use two very useful concatenation operators in MS Access. Modules: Concatenate fields in same table. A query must have at least (N-1) join conditions to prevent a Cartesian product, where N is the number of tables in the query. Select From File under the Get External Data section of the tab. Using T-SQL in this manner is often found in data warehouses where we need to join a fact table with multiple foreign keys to the same dimension table. field1; The order in which joins are processed is the same in which they are written, and a join condition can only reference the collections to its left. joiningcolumn = b. That said, I’ve never advised anyone to put an Access. please remember that some of the character fields are empty. How to write efficient table JOINs. You did not have to type an = before the value. In Access, the primary report is called the main report. Can you run multiple queries back to back? I have a database with about 200 queries. Query your data for $5. Compare difference between two tables in MS Access Query. Union queries cannot be displayed in Design view. Since SQL joins appear to be set-based, the use of Venn diagrams to explain them seems, at first blush, to be a natural fit. A fact table that has foreign keys to multiple dimensions. MS SQL Server has PIVOT queries, but you have to specify all the columns. Today, we continue our journey into the world of SQL and relational database systems. Using Multiple Columns in a Group: 2. Outer Join is the SQL function to join two tables (or multiple tables), then return a set of query records including what inner join would return. Whenever you want a query to ask for input each time you run the query, you create what's called a parameter query in Access 2013. For more information on using logical operators in your own Microsoft Access queries, take a look. If you have read this far in my blog there is a chance you may be new to SCCM Queries, if so you’re on your way to learning how to create SCCM Queries. The tables don't even need to have the same fields or fields of exactly the same data types. I am trying to build a summary table displaying countries in one column and some numbers (Members,Joins,Expires) for those countries in other columns. Before we run a. The simplest way to create a union query without knowing SQL is to create separate queries to query each table in the query design, and copy and paste the SQL statements into one window. MS Access 2003: Joining 3 tables (using left joins) This MSAccess tutorial explains how to create a query that joins 3 tables using LEFT JOINS in Access 2003 (with screenshots and step-by-step instructions). In this SkillForge (www. (i am assuming you would need a full outer join to put your two queries together, this trick avoids the need for a full outer join, otherwise, if a material_id is either in BOTH results or NIETHER result - -just join). I am just not sure you talking about just two tables here? If you had just two tables, then: Just drop in your main table (tblStudents) Now drop in the child able (tbllevels) Now drag/draw a join line from your main table to the child table for column (id). If you are able to do this, it would make your report look very comprehensive and professional. Access provides a special type of query that you can use to vertically splice together the data from two or more tables. Skip the next step. Only records with Argentina in the second column are showing. Join Properties in queries are very important when your query uses more than one table. Simply create a query where you created a calculated field that converts one of the values (Text to Numeric, or Numeric to Text). Self Join Query Code: a) Update M_Emp as A INNER JOIN M_Emp as B ON A. I'd like to merge the two tables with a query and combine some of the fields to display in a single query. 12 Joining Tables. Access Case Sensitive Left Join. Management -- Database Mail (double-click or right-click - Configure Database Mail). This tip multiple queries in report explains how to add many queries to the one report. Example SQL queries. Steps to Link Multiple Tables in Access 2016. pcs) AS stock_balance FROM stock GROUP BY stock. The Access query builder creates an explicit inner join by default. If you import both spreadsheets into Access, then you can do what you want by creating an Access update query. The entity or selectable object here effectively replaces the “left edge” of any calls to join() , when no joinpoint is otherwise established - usually, the default “join point” is the leftmost entity in the Query object’s list of entities to be selected. In this post, we will deal with all kinds of joins in general before we actually come to the solution of how to code up a full outer join in Microsoft Access. You may have to register before you can post: click the register link above to proceed. Today, you’ll learn to use two very useful concatenation operators in MS Access. Author(s) Michel Walsh: In a total query, we can easily get "one" field, the one on which the aggregation occurs, but how can we get the other fields of the "same" record. The JOIN keyword is classified as ANSI JOIN and NON ANSI JOIN. > questions > how to run multiple queries through for the first two query's:. If you are new to writing SQL queries and want to learn how to build applications or generate business reports using SQL, then Introduction to SQL Training is a perfect match for you. Does anyone know a way to write a query in Access VBA that joins two tables residing in separate databases? (one on a local drive, and one on a remote drive). Thank you thank you. The following are the two basic types of joins that we will be discussing in this chapter − The inner join; The outer join. Group students by age and count number of students at each age, and display all with count > 1 in descending order of count. In fact, joins are to queries what relationships are to tables. Data that you have in in MS Access or CSV that you want to join into the PostgreSQL database will have to be combined as multiple tables in a single database. Db1 Col_1 Col_2 1 a 2 b 3 c 4 d 5 e 6 f 7 g 8 j 9 h 10 i Db2 Col_1 Col_2 1 j 2 a 3 d 4 e 5 c 6 b 7 f 8 g 9 h 10 i Then I have the following 2 Select queries: SELECT Db1. Create a query that is based on the Order Total and the Order Count crosstab queries. You can manually join two tables by dragging a field from one table's field list to the matching field in the other table's field list, as shown in figure. To retrieve data from two or more tables in one query we use the SQL JOIN statement. The main types of popular query modes are the menu, the “fill-in-the-blank” technique, and the structured query. id = Entrance. At the end the query will populate the MS Access database. The two tables are "Payroll_2011" and "Payroll_2012"; and both tables have columns "Name", "Payperiod End Date," and "Amount". Access assumes that it is there in the Criteria row unless you type something else, like < or >, for example. First, for the type system, we support all JSON primitive types - numeric types, bool, string and null. The "CROSS JOIN" join operator produces the same result as the "INNER JOIN", "JOIN" and "," operators, but is handled differently by the query optimizer in that it prevents the query optimizer from reordering the tables in the join. the join-predicate is satisfied), the query will combine the LastName, DepartmentID and DepartmentName columns from the two tables into a result row. of course if the calculation is done at the same time each row is inserted into the new table, nothing seems to be wrong theoretically to me. Note the number of rows and columns; several columns are repeated more often than strictly necessary. field2 left join collC on collB. The INNER JOIN is an optional clause of the SELECT statement. As it stands though, the join query suffers the same problem as described above: one column is used to scan the index, the other is used to filter the results (notwitshanding the misleading Explain Plan output). Despite the fact that the join condition eliminates possibility of an actual NULL being returned by the query and any val IS NULL reaching the WHERE clause is a result of a join miss, MySQL still examines all records in t_inner, not stopping after the first hit. Replacing the ON clause with the USING clause for Left Join: 10. The most intuitive form for beginners is the LEFT JOIN. However, when we query a SharePoint List for the first time, Access has to fetch all records and download them to a local cache in order to process the query which is then executed locally. INNER JOIN is the same as JOIN; the keyword INNER is optional. It is difficult to do a direct Left Join (perhaps there are ways but I just don't know), instead we can make use of UNION to join two Queries. * FROM TableA INNER JOIN TableB ON TableA. Most database applications store their information in multiple tables. Can anyone tell me if it is possible create a Union of two Crosstab Queries under one line of SQL? Below is an example to show what kind of SQL statement I am tring to create: Realize in this example the first and second Crosstab SQL are the same. Note that the SQL needs to end with semi-colon if you have multiple queries in the query window. I had a main table with all the gift records namedn LittleRock. This name can then be used in a hint in the outer query or even in a hint in an inline view to affect query execution on the tables appearing in the named query block. Using T-SQL in this manner is often found in data warehouses where we need to join a fact table with multiple foreign keys to the same dimension table. SELECT FROM table_name WHERE DATE_FIELD between '2015-03-01' and LAST_DAY('2016-02-01'). And you never can have an operation like a=b=c, but you have You need to split the statement across multiple joins:. I know that this is 2 years old but I wanted to add two things to try if you still have not gotten this working, particularly if you are getting "No global profile is configured. Whilst the crosstab query is useful for analysing complex data, it needs several fields to work with. Employees in the field and outer offices can have up-to-the-minute data and also feed data to your centralized database. The final thing you need to consider when designing a query is the way you link—or join—the tables you're working with. Access just wants you to name the query instead. One simple way to query multiple tables is to use a simple SELECT statement. The dialog box reminds you that all the selected tables must be related before you can run your query — and suggests that you correct the problem before continuing. A join usually consists of two tables, but in general, joins can involve any number of tables. customerID, order. To build an INNER JOIN statement, use the INNER JOIN keywords in the FROM clause of a SELECT statement. col4 from Table1 inner join Table2 on Table1. I am just not sure you talking about just two tables here? If you had just two tables, then: Just drop in your main table (tblStudents) Now drop in the child able (tbllevels) Now drag/draw a join line from your main table to the child table for column (id). The two tables are "Payroll_2011" and "Payroll_2012"; and both tables have columns "Name", "Payperiod End Date," and "Amount". In this post, we will deal with all kinds of joins in general before we actually come to the solution of how to code up a full outer join in Microsoft Access. Basic Joins in Access Queries. Two Inner Joins in OleDb SQL query. Description. Structured Query Language (SQL) was created to shield the database programmer from understanding the specifics of how data is physically stored in each database management system and also to provide a universal foundation for updating, creating and extracting data from database systems that support an SQL interface. A join query is an intersection of sets - the information returned by the query has to be present in both tables to be valid. Access one of the pages of data on the site using Power Query’s From Web functionality. This is the default join in Access, for example, if we design a query with two tables, tblCustomers and tblOrders , and join those two tables by the CustomerIDs, this query will return only the results. The link between the tables should be One to Many, Table1 to Table2. Reset the Query window by selecting New from the File menu. The query design determines the fields and records you see and the sort order. Tutorials Point (India) Pvt. But these 3% cover 90% of regular operations on database. > from people p left outer join a on a. Simply create a query where you created a calculated field that converts one of the values (Text to Numeric, or Numeric to Text). The UNION command is used to select. I've got two tables which both contain customer sort codes & account numbers. If you're using SQL Server 2005 and up, I suggest to split your logic into multiple CTEs. I am having trouble figuring out how to execut the following SQL query. Before we dive into the details of a SQL join, let’s briefly discuss what SQL is, and why someone would want to perform a SQL join. In this way you can import multiple excel files into a single Access Table. The following example uses the last two years of Order Total and Order Count in Microsoft Access.