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https://github.com/GreptimeTeam/greptimedb.git
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3556eb4476
* feat: show comment on information_schema Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * add to information schema for columns, add sqlness tests Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * remove duplications Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * fix typo Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * update integration test Signed-off-by: Ruihang Xia <waynestxia@gmail.com> --------- Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
89 lines
2.2 KiB
SQL
89 lines
2.2 KiB
SQL
-- Test: COMMENT ON TABLE add & remove
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CREATE TABLE comment_table_test (
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pk INT,
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val DOUBLE,
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ts TIMESTAMP TIME INDEX,
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PRIMARY KEY(pk)
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);
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-- Add table comment
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COMMENT ON TABLE comment_table_test IS 'table level description';
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SHOW CREATE TABLE comment_table_test;
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SELECT table_comment
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FROM information_schema.tables
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WHERE table_schema = 'public'
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AND table_name = 'comment_table_test';
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-- Remove table comment
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COMMENT ON TABLE comment_table_test IS NULL;
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SHOW CREATE TABLE comment_table_test;
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SELECT table_comment
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FROM information_schema.tables
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WHERE table_schema = 'public'
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AND table_name = 'comment_table_test';
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DROP TABLE comment_table_test;
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-- Test: COMMENT ON COLUMN add & remove
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CREATE TABLE comment_column_test (
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pk INT,
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val DOUBLE,
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ts TIMESTAMP TIME INDEX,
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PRIMARY KEY(pk)
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);
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-- Add column comment
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COMMENT ON COLUMN comment_column_test.val IS 'value column description';
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SHOW CREATE TABLE comment_column_test;
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SELECT column_comment
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FROM information_schema.columns
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WHERE table_schema = 'public'
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AND table_name = 'comment_column_test'
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AND column_name = 'val';
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-- Remove column comment
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COMMENT ON COLUMN comment_column_test.val IS NULL;
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SHOW CREATE TABLE comment_column_test;
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SELECT column_comment
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FROM information_schema.columns
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WHERE table_schema = 'public'
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AND table_name = 'comment_column_test'
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AND column_name = 'val';
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DROP TABLE comment_column_test;
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-- Test: COMMENT ON FLOW add & remove
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-- Prepare source & sink tables
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CREATE TABLE flow_source_comment_test (
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desc_str STRING,
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ts TIMESTAMP TIME INDEX
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);
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CREATE TABLE flow_sink_comment_test (
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desc_str STRING,
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ts TIMESTAMP TIME INDEX
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);
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CREATE FLOW flow_comment_test
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SINK TO flow_sink_comment_test
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AS
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SELECT desc_str, ts FROM flow_source_comment_test;
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-- Add flow comment
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COMMENT ON FLOW flow_comment_test IS 'flow level description';
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SHOW CREATE FLOW flow_comment_test;
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SELECT comment
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FROM information_schema.flows
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WHERE flow_name = 'flow_comment_test';
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-- Remove flow comment
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COMMENT ON FLOW flow_comment_test IS NULL;
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SHOW CREATE FLOW flow_comment_test;
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SELECT comment
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FROM information_schema.flows
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WHERE flow_name = 'flow_comment_test';
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DROP FLOW flow_comment_test;
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DROP TABLE flow_source_comment_test;
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DROP TABLE flow_sink_comment_test;
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