SELECT options refine results As we saw in the last article, the SQL SELECT statement has the widest variety of query options, which are used to control the way data is returned. These options ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Both of these have roots in early CODASYL specifications. The third sub-language in SQL declares queries, through the SELECT statement and relational joins. The SELECT statement tells the query ...

The value is returned through the macro variable SQLRC (a short form for SQL return code). For example, if a SELECT statement is valid, the macro variable SQLRC returns a value of 0. See Using Macro ...