5.6. Specifying a Text-Based Search with SQL Syntax
If the Perl SQL::Statement module is installed, SQL syntax can be specified for the text-based search. This is not the same as the external SQL database search, treated below separately. This works on the ASCII text source file, not on the actual database.
This syntax allows this form setup:
Artist: <INPUT NAME="artist"> Title: <INPUT NAME="title"> <INPUT TYPE=hidden NAME="mv_sql_query" VALUE=" SELECT code FROM products WHERE artist LIKE artist AND title LIKE title">
If the right hand side of an expression looks like a column, i.e., is not quoted, the appropriate form variable is substituted. (If used in a one-click, the corresponding scratch variable is used instead.) The assumption is reversed for the left-hand side. If it is a quoted string, the column name is read from the passed values. Otherwise, the column name is literal.
Search for: <INPUT NAME="searchstring"><BR> Search in <INPUT TYPE="radio" NAME="column" VALUE="title"> title <INPUT TYPE="radio" NAME="column" VALUE="artist"> artist <INPUT TYPE=hidden NAME="mv_sql_query" VALUE="SELECT code FROM products WHERE 'column' LIKE searchstring">
Once again, this does not conduct a search on an SQL database, but formats a corresponding text-based search. Parentheses will have no effect, and an OR condition will cause all conditions to be OR. The searches above would be similar to:
[page search=" co=yes sf=artist op=rm se=[value artist] sf=title op=rm se=[value title] " ] Search for [value artist], [value title] </a> [page search=" co=yes sf=[value column] op=rm se=[value searchstring] " ] Search for [value searchstring] in [value column] </a>