72 fn build_sql_columns_not_empty(columns: &Vec<&str>, sql: &mut String) {  in build_sql_columns_not_empty()
73     for i in 0..columns.len() {  in build_sql_columns_not_empty()
74         let column = &columns[i];  in build_sql_columns_not_empty()
76         if i != columns.len() - 1 {  in build_sql_columns_not_empty()
83 fn build_sql_columns(columns: &Vec<&str>, sql: &mut String) {  in build_sql_columns()
84     if !columns.is_empty() {  in build_sql_columns()
85         build_sql_columns_not_empty(columns, sql);  in build_sql_columns()
191 fn get_column_info(columns: &'static [ColumnInfo], db_column: &str) -> Result<&'static ColumnInfo> {  in get_column_info()
192     for column in columns.iter() {  in get_column_info()
224     pub(crate) fn create_with_version(&self, columns: &[ColumnInfo], version: u32) -> Result<()> {  in create_with_version()
230         for i in 0..columns.len() {  in create_with_version()
231             let column = &columns[i];  in create_with_version()
241             if i != columns.len() - 1 {  in create_with_version()
257     pub(crate) fn create(&self, columns: &[ColumnInfo]) -> Result<()> {  in create()
258         self.create_with_version(columns, DB_UPGRADE_VERSION)  in create()
261     pub(crate) fn upgrade(&self, ver: u32, columns: &[UpgradeColumnInfo]) -> Result<()> {  in upgrade()
269         for item in columns {  in upgrade()
400         columns: &Vec<&'static str>,  in query_row()
407         if !columns.is_empty() {  in query_row()
410         build_sql_columns(columns, &mut sql);  in query_row()