Function parse_expr_string

nodedb-sql/src/lib.rs:47–63

Parse a standalone SQL expression string into an `SqlExpr`. Used by the DEFAULT expression evaluator to handle arbitrary expressions (e.g. `upper('x')`, `1 + 2`) that don't match the hard-coded keyword list.

(expr_text: &str)

/// Used by the DEFAULT expression evaluator to handle arbitrary expressions
/// (e.g. `upper('x')`, `1 + 2`) that don't match the hard-coded keyword list.
pub fn parse_expr_string(expr_text: &str) -> Result<SqlExpr> {
    use sqlparser::dialect::GenericDialect;
    use sqlparser::parser::Parser;

    let dialect = GenericDialect {};
    let ast_expr = Parser::new(&dialect)
        .try_with_sql(expr_text)
        .map_err(|e| SqlError::Parse {
            detail: e.to_string(),
        })?
        .parse_expr()
        .map_err(|e| SqlError::Parse {
            detail: e.to_string(),
        })?;

    resolver::expr::convert_expr(&ast_expr)
}

use functions::registry::FunctionRegistry;
use parser::array_stmt::{ArrayStatement, try_parse_array_statement};