◊(Local Yarn Code "Diff")

Differences From Artifact [3bfd95a3]:

To Artifact [dda37e2d]:


67
68
69
70
71
72
73








74
75
76
77
78
79
80

Given a list of values, returns a single string containing the list elements in order, surrounded
by backticks and separated by commas.

@examples[#:eval my-eval
(list->sql-fields '("id" "name" "address"))
(list->sql-fields '(or use symbols))]









@defproc[(list->sql-parameters [lst (listof stringish?)]) string?]

Given a list of values, return a single string with numbered parameter placeholders, suitable for
use in a parameterized SQL query.

@examples[#:eval my-eval







>
>
>
>
>
>
>
>







67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88

Given a list of values, returns a single string containing the list elements in order, surrounded
by backticks and separated by commas.

@examples[#:eval my-eval
(list->sql-fields '("id" "name" "address"))
(list->sql-fields '(or use symbols))]

@defproc[(list->sql-values [lst (listof any/c)]) string?]

Given a list of values, return a string containing those values separated by commas inside a pair of
parentheses. Any string values in the list will be surrounded by quote marks.

@examples[#:eval my-eval
(list->sql-values '(0 "hello" NULL 34))]

@defproc[(list->sql-parameters [lst (listof stringish?)]) string?]

Given a list of values, return a single string with numbered parameter placeholders, suitable for
use in a parameterized SQL query.

@examples[#:eval my-eval
142
143
144
145
146
147
148








149
150
151
152
153
154
155

@examples[#:eval my-eval
(make-insert/replace-query 'vals '(a b c))]

This query relies on the fact that in SQLite every table contains a @tt{rowid} column by default.
For more information on why/how the query works, see
@ext-link["https://sqlite.org/lang_insert.html"]{the SQLite docs for @tt{INSERT}}.









@defproc[(make-select-query [table stringish?] [fields (listof stringish?)] [#:where where-clause
stringish?]) string?]

Returns a SQLite query string for selecting rows from the database.

@examples[#:eval my-eval







>
>
>
>
>
>
>
>







150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

@examples[#:eval my-eval
(make-insert/replace-query 'vals '(a b c))]

This query relies on the fact that in SQLite every table contains a @tt{rowid} column by default.
For more information on why/how the query works, see
@ext-link["https://sqlite.org/lang_insert.html"]{the SQLite docs for @tt{INSERT}}.

@defproc[(make-insert-rows-query [table stringish?] [fields (listof stringish?)] [rows (listof
(listof any/c))]) string?]

Returns a SQLite query string for inserting multiple rows.

@examples[#:eval my-eval
(make-insert-rows-query 'people '(id name) '((1 "Alice") (2 "Bob")))]

@defproc[(make-select-query [table stringish?] [fields (listof stringish?)] [#:where where-clause
stringish?]) string?]

Returns a SQLite query string for selecting rows from the database.

@examples[#:eval my-eval