odbtools/odbctest/mql/aaa/18prepare/12prepare_update.mql

-- ============================================================
-- Prepare Update 操作测试
-- ============================================================

-- 1. prepare update 基本操作
update /test/aaa/test_prepare set p_int=? where p_name=?
/**
params(999, "prep_insert_001")
**/
;

select p_name, p_int from /test/aaa/test_prepare where p_name='prep_insert_001'
/**
output()
**/
;

-- 2. prepare update 多个 ?
update /test/aaa/test_prepare set p_text=?, p_int=? where p_name=?
/**
params("updated by prepare update", 888, "prep_insert_002")
**/
;

select p_text, p_int from /test/aaa/test_prepare where p_name='prep_insert_002'
/**
output()
**/
;

-- 3. prepare update float
update /test/aaa/test_prepare set p_float=?, p_double=? where p_name=?
/**
params(99.99, 999.999999, "prep_insert_001")
**/
;

select p_float, p_double from /test/aaa/test_prepare where p_name='prep_insert_001'
/**
output()
**/
;

-- 4. prepare update 不存在的记录
update /test/aaa/test_prepare set p_int=? where p_name=?
/**
params(1, "non_exist_prepare_key")
**/
;

select * from /test/aaa/test_prepare where p_name='non_exist_prepare_key'
/**
output()
count(0)
**/
;