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orm: add delete stmt (#5725)

This commit is contained in:
Louis Schmieder 2020-07-07 16:55:32 +02:00 committed by GitHub
parent 4d7d1eb0c4
commit 2a7a6fa1eb
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3 changed files with 36 additions and 12 deletions

View File

@ -209,6 +209,15 @@ fn test_orm_sqlite() {
select from User order by age desc limit 1 offset offs select from User order by age desc limit 1 offset offs
} }
assert second_oldest.age == 31 assert second_oldest.age == 31
sql db {
delete from User where age == 34
}
updated_oldest := sql db {
select from User order by age desc limit 1
}
assert updated_oldest.age == 31
} }
fn test_orm_pg() { fn test_orm_pg() {

View File

@ -28,8 +28,10 @@ fn (mut g Gen) sql_stmt(node ast.SqlStmt) {
g.write('sqlite3_stmt* $g.sql_stmt_name = ${dbtype}__DB_init_stmt($db_name, tos_lit("') g.write('sqlite3_stmt* $g.sql_stmt_name = ${dbtype}__DB_init_stmt($db_name, tos_lit("')
if node.kind == .insert { if node.kind == .insert {
g.write('INSERT INTO `${util.strip_mod_name(node.table_name)}` (') g.write('INSERT INTO `${util.strip_mod_name(node.table_name)}` (')
} else { } else if node.kind == .update {
g.write('UPDATE `${util.strip_mod_name(node.table_name)}` SET ') g.write('UPDATE `${util.strip_mod_name(node.table_name)}` SET ')
} else if node.kind == .delete {
g.write('DELETE FROM `${util.strip_mod_name(node.table_name)}` ')
} }
if node.kind == .insert { if node.kind == .insert {
for i, field in node.fields { for i, field in node.fields {
@ -61,8 +63,10 @@ fn (mut g Gen) sql_stmt(node ast.SqlStmt) {
} }
} }
g.write(' WHERE ') g.write(' WHERE ')
} else if node.kind == .delete {
g.write(' WHERE ')
} }
if node.kind == .update { if node.kind == .update || node.kind == .delete {
g.expr_to_sql(node.where_expr) g.expr_to_sql(node.where_expr)
} }
g.writeln('"));') g.writeln('"));')

View File

@ -127,17 +127,19 @@ fn (mut p Parser) sql_stmt() ast.SqlStmt {
} }
mut inserted_var_name := '' mut inserted_var_name := ''
mut table_name := '' mut table_name := ''
expr := p.expr(0) if kind != .delete {
match expr { expr := p.expr(0)
ast.Ident { match expr {
if kind == .insert { ast.Ident {
inserted_var_name = expr.name if kind == .insert {
} else if kind == .update { inserted_var_name = expr.name
table_name = expr.name } else if kind == .update {
table_name = expr.name
}
}
else {
p.error('can only insert variables')
} }
}
else {
p.error('can only insert variables')
} }
} }
n = p.check_name() // into n = p.check_name() // into
@ -160,7 +162,10 @@ fn (mut p Parser) sql_stmt() ast.SqlStmt {
break break
} }
} }
} else if kind == .delete && n != 'from' {
p.error('expecting `from`')
} }
mut table_type := table.Type(0) mut table_type := table.Type(0)
mut where_expr := ast.Expr{} mut where_expr := ast.Expr{}
if kind == .insert { if kind == .insert {
@ -177,6 +182,12 @@ fn (mut p Parser) sql_stmt() ast.SqlStmt {
} }
p.check_sql_keyword('where') p.check_sql_keyword('where')
where_expr = p.expr(0) where_expr = p.expr(0)
} else if kind == .delete {
table_type = p.parse_type()
sym := p.table.get_type_symbol(table_type)
table_name = sym.name
p.check_sql_keyword('where')
where_expr = p.expr(0)
} }
p.check(.rcbr) p.check(.rcbr)
return ast.SqlStmt{ return ast.SqlStmt{